Investment Strategy |
Dec. 31, 2025 |
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| Putnam VT Core Equity Fund | |
| Prospectus [Line Items] | |
| Strategy [Heading] | Investments, risks, and performance Investments |
| Strategy Narrative [Text Block] | The fund invests mainly in common stocks (growth or value stocks or both) of U.S. companies of any size that the Investment Manager, as defined below, believes have favorable investment potential. For example, the fund may purchase stocks of companies with stock prices that reflect a value lower than that which the Investment Manager places on the company. The Investment Manager may also consider other factors it believes will cause the stock price to rise. The Investment Manager may consider, among other factors, a company’s valuation, financial strength, growth potential, competitive position in its industry, projected future earnings, cash flows and dividends when deciding whether to buy or sell investments. Under normal circumstances, the fund invests at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in equity investments, including common stocks, preferred stocks, convertible securities, warrants, American Depositary Receipts (ADRs) and Global Depositary Receipts (GDRs). This policy may be changed only after 60 days’ notice to shareholders.
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| Putnam VT Diversified Income Fund | |
| Prospectus [Line Items] | |
| Strategy [Heading] | Investments, risks, and performance Investments |
| Strategy Narrative [Text Block] | The fund invests mainly in bonds that are securitized debt instruments (such as mortgage-backed investments) and related derivative instruments, and other obligations of companies and governments worldwide, including bank loans that are either investment-grade or below-investment-grade in quality (sometimes referred to as “junk bonds”) and have intermediate- to long-term maturities (three years or longer). The fund currently has significant investment exposure to residential and commercial mortgage-backed securities. The Investment Manager, as defined below, may consider, among other factors, credit, interest rate and prepayment risks, as well as general market conditions, when deciding whether to buy or sell investments. The fund typically uses derivatives to a significant extent, including credit default swaps, interest rate swaps, total return swaps, to-be-announced (“TBA”) commitments, futures, options and swaptions, including on mortgage-backed securities and indices, and certain foreign currency transactions and credit default, total return and interest rate swap contracts for both hedging and non-hedging purposes, including to obtain or adjust exposure to mortgage-backed securities.
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| Putnam VT Emerging Markets Equity Fund | |
| Prospectus [Line Items] | |
| Strategy [Heading] | Investments, risks, and performance Investments |
| Strategy Narrative [Text Block] | The fund invests mainly in common stocks (growth or value stocks or both) of emerging market companies of any size that the Investment Manager, as defined below, believes have favorable investment potential. For example, the fund may purchase stocks of companies with stock prices that reflect a value lower than that which the Investment Manager places on the company. The Investment manager may also consider other factors that it believes will cause the stock price to rise. Under normal circumstances, the fund invests at least 80% of its net assets in equity securities of emerging market companies. This policy may be changed only after 60 days’ notice to shareholders. Emerging markets include countries in the MSCI Emerging Market Index or that the Investment Manager considers to be emerging markets based on its evaluation of their level of economic development or the size and nature of their securities markets. The Investment Manager may consider, among other factors, a company’s valuation, financial strength, growth potential, competitive position in its industry, projected future earnings, cash flows and dividends when deciding whether to buy or sell investments. The Investment Manager may also use derivatives, such as futures, options, certain foreign currency transactions, warrants and swap contracts, for both hedging and non-hedging purposes. The fund is “non-diversified,” which means it may invest a greater percentage of its assets in fewer issuers than a “diversified” fund. The fund expects to invest in a limited number of issuers.
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| Putnam VT Focused International Equity Fund | |
| Prospectus [Line Items] | |
| Strategy [Heading] | Investments, risks, and performance Investments |
| Strategy Narrative [Text Block] | The fund invests mainly in common stocks (growth or value stocks or both) of companies of any size outside the United States that the Investment Manager, as defined below, believes have favorable investment potential. The Investment Manager considers a company to be located outside the United States if the company’s securities trade outside the United States, the company is headquartered or organized outside the United States or the company derives a majority of its revenues or profits outside the United States. Under normal circumstances, the fund invests at least 80% of its net assets in equity investments. This policy may be changed only after 60 days’ notice to shareholders. The fund’s equity investments may include common stocks, preferred stocks, convertible securities, warrants, American Depositary Receipts (“ADRs”) and Global Depositary Receipts (“GDRs”). The fund invests in both developed countries and in emerging markets. The Investment Manager may consider, among other factors, a company’s valuation, financial strength, growth potential, competitive position in its industry, projected future earnings, cash flows and dividends when deciding whether to buy or sell investments. The Investment Manager may also consider other factors that it believes will cause the stock price to rise. The fund may also use derivatives, such as futures, options, warrants and swap contracts, including credit default swaps and credit default swap indexes, for both hedging and non‑hedging purposes. The fund expects from time to time to invest in credit default swaps and/or credit default swap indexes to hedge against equity market risk. The fund is “non‑diversified,” which means it may invest a greater percentage of its assets in fewer issuers than a “diversified” fund. The fund expects to invest in a limited number of issuers.
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| Putnam VT George Putnam Balanced Fund | |
| Prospectus [Line Items] | |
| Strategy [Heading] | Investments, risks, and performance Investments |
| Strategy Narrative [Text Block] | The fund invests mainly in a combination of bonds and common stocks (growth or value stocks or both) of large U.S. companies, with a greater focus on common stocks. For example, the fund may purchase stocks of companies with stock prices that reflect a value lower than that which the Investment Manager, as defined below, places on the company. The Investment Manager may also consider other factors that it believes will cause the stock price to rise. The fund buys bonds of governments and private companies that are mostly investment-grade in quality with intermediate- to long-term maturities (three years or longer). The Investment Manager may consider, among other factors, a company’s valuation, financial strength, growth potential, competitive position in its industry, projected future earnings, cash flows and dividends when deciding whether to buy or sell equity investments, and, among other factors, credit, interest rate and prepayment risks, as well as general market conditions, when deciding whether to buy or sell fixed-income investments. The fund may also use derivatives, such as futures, options, warrants and swap contracts, for both hedging and non-hedging purposes.
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| Putnam VT Global Asset Allocation Fund | |
| Prospectus [Line Items] | |
| Strategy [Heading] | Investments, risks, and performance Investments |
| Strategy Narrative [Text Block] | The fund invests a majority of its assets in a diversified portfolio of equity securities (growth or value stocks or both) of both U.S. and foreign companies of any size. The Investment Manager, as defined below, may consider, among other factors, a company’s valuation, financial strength, growth potential, competitive position in its industry, projected future earnings, cash flows and dividends when deciding whether to buy or sell equity investments. The fund may also invest in a diversified portfolio of fixed-income investments, including both U.S. and foreign government obligations, corporate obligations and securitized debt instruments (such as mortgage-backed investments). The Investment Manager may consider, among other factors, credit, interest rate and prepayment risks, as well as general market conditions, when deciding whether to buy or sell fixed income investments. The Investment Manager may also select other investments that do not fall within these asset classes. The Investment Manager may also use to a significant extent derivatives, such as futures, options, certain foreign currency transactions, warrants and swap contracts, for both hedging and non-hedging purposes.
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| Putnam VT Global Health Care Fund | |
| Prospectus [Line Items] | |
| Strategy [Heading] | Investments, risks, and performance Investments |
| Strategy Narrative [Text Block] | As a non-diversified fund concentrating in the health care industries, the fund invests mainly in common stocks (growth or value stocks or both) of large and midsize companies worldwide that the Investment Manager, as defined below, believes have favorable investment potential. Under normal circumstances, the fund invests at least 80% of its net assets in securities of companies in the health care industries. This policy may be changed only after 60 days’ notice to shareholders. Potential investments include companies that manufacture health care supplies or provide health care-related services, and companies in the research, development, production and marketing of pharmaceuticals and biotechnology products. The fund may purchase stocks of companies with stock prices that reflect a value lower than that which that Investment Manager places on the company. The Investment Manager may consider, among other factors, a company’s valuation, financial strength, growth potential, competitive position in its industry, projected future earnings, cash flows and dividends when deciding whether to buy or sell investments. The Investment Manager may also consider other factors that it believes will cause the stock price to rise. The fund may also use derivatives, such as certain foreign currency transactions, futures, options, warrants and swap contracts, for both hedging and non-hedging purposes, and may engage in short sales of securities. For example, the fund typically uses foreign currency forward contracts in connection with the fund’s investments in foreign securities in order to hedge the fund’s currency exposure relative to the fund’s benchmark index. The use of the term “global” in the fund’s name is meant to emphasize that the Investment Manager looks for investment opportunities on a worldwide basis and that the fund’s investment strategies are not constrained by the countries or regions in which companies are located. Under normal market conditions, the fund intends to invest in at least five different countries and at least 40% of its net assets in securities of foreign companies (or, if less, at least the percentage of net assets that is ten percentage points less than the percentage of the fund’s benchmark represented by foreign companies, as determined by the providers of the benchmark).
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| Putnam VT Government Money Market Fund | |
| Prospectus [Line Items] | |
| Strategy [Heading] | Investments, risks, and performance Investments |
| Strategy Narrative [Text Block] | The fund invests at least 99.5 percent of its total assets in cash, U.S. government securities and repurchase agreements that are fully collateralized by U.S. government securities or cash. The fund invests mainly in debt securities that are obligations of the U.S. government, its agencies and instrumentalities and accordingly are backed by the full faith and credit of the United States (e.g., U.S. Treasury bills) or by the credit of a federal agency or government-sponsored entity (e.g., securities issued by Fannie Mae and Freddie Mac). The U.S. government securities in which the fund invests may also include variable and floating rate instruments and when-issued and delayed delivery securities (i.e., payment or delivery of the securities occurs at a future date for a predetermined price). Under normal circumstances, the fund invests at least 80% of its net assets in U.S. government securities and repurchase agreements that are fully collateralized by U.S. government securities. This policy may be changed only after 60 days’ notice to shareholders. The securities purchased by the fund are subject to quality, maturity, diversification and other requirements pursuant to rules promulgated by the SEC. The Investment Manager may consider, among other factors, credit and interest rate risks and characteristics of the issuer or counterparty, as well as general market conditions, when deciding whether to buy or sell investments.
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| Putnam VT High Yield Fund | |
| Prospectus [Line Items] | |
| Strategy [Heading] | Investments, risks, and performanceInvestments |
| Strategy Narrative [Text Block] | The fund invests mainly in bonds that are obligations of U.S. companies, are below investment-grade in quality (sometimes referred to as “junk bonds”), and have intermediate- to long-term maturities (three years or longer). Under normal circumstances, the fund invests at least 80% of its net assets in securities rated below investment-grade. This policy may be changed only after 60 days’ notice to shareholders. The fund may also invest in other debt instruments, including loans. The Investment Manager, as defined below, may consider, among other factors, credit, interest rate and prepayment risks, as well as general market conditions, when deciding whether to buy or sell investments. The fund may also use derivatives, such as futures, options, certain foreign currency transactions, and credit default swap contracts, for both hedging and non‑hedging purposes.
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| Putnam VT Income Fund | |
| Prospectus [Line Items] | |
| Strategy [Heading] | Investments, risks, and performance Investments |
| Strategy Narrative [Text Block] | The fund invests mainly in bonds that are securitized debt instruments (such as mortgage-backed investments) and related derivative instruments, and other obligations of companies and governments worldwide denominated in U.S. dollars or (to a lesser extent) foreign currencies, that are either investment-grade or below-investment-grade in quality (sometimes referred to as “junk bonds”) and that have intermediate- to long-term maturities (three years or longer). The fund currently has significant investment exposure to residential and commercial mortgage-backed securities. The Investment Manager may consider, among other factors, credit, interest rate and prepayment risks, as well as general market conditions, when deciding whether to buy or sell investments. The fund typically uses, to a significant extent, derivatives, including credit default swaps, interest rate swaps, total return swaps, to-be-announced (“TBA”) commitments, futures, options and swaptions, including on mortgage-backed securities and indices, and certain foreign currency transactions for both hedging and non-hedging purposes including to obtain or adjust exposure to mortgage-backed investments.
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| Putnam VT International Equity Fund | |
| Prospectus [Line Items] | |
| Strategy [Heading] | Investments, risks, and performance Investments |
| Strategy Narrative [Text Block] | The fund invests mainly in common stocks (growth or value stocks or both) of large and midsize companies outside the United States that the Investment Manager, as defined below, believes have favorable investment potential. For example, the fund may purchase stocks of companies with stock prices that reflect a value lower than that which the Investment Manager places on the company. Under normal circumstances, the fund invests at least 80% of its net assets in equity investments. This policy may be changed only after 60 days’ notice to shareholders. The Investment Manager may consider, among other factors, a company’s valuation, financial strength, growth potential, competitive position in its industry, projected future earnings, cash flows and dividends when deciding whether to buy or sell investments. The Investment Manager may also consider other factors that the Investment Manager believes will cause the stock price to rise. The fund invests mainly in developed countries but may invest in emerging markets. The fund may also use derivatives, such as certain foreign currency transactions, futures, options, warrants and swap contracts, for both hedging and non-hedging purposes. For example, the Investment Manager typically uses foreign currency forward contracts in connection with the fund’s investments in foreign securities in order to hedge the fund’s currency exposure relative to the MSCI EAFE Index-NR.
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| Putnam VT International Value Fund | |
| Prospectus [Line Items] | |
| Strategy [Heading] | Investments, risks, and performance |
| Strategy Narrative [Text Block] | The fund invests mainly in common stocks of large and midsize companies outside the United States, with a focus on value stocks. Value stocks are those that the Investment Manager, as defined below, believes are currently undervalued by the market. If the Investment Manager is correct and other investors ultimately recognize the value of the company, the price of its stock may rise. The fund invests mainly in developed countries, but may invest in emerging markets. The Investment Manager may consider, among other factors, a company’s valuation, financial strength, growth potential, competitive position in its industry, projected future earnings, cash flows and dividends when deciding whether to buy or sell investments. The fund may also use derivatives, such as certain foreign currency transactions, futures, options, warrants and swap contracts, for both hedging and non‑hedging purposes. For example, the Investment Manager typically uses foreign currency forward contracts in connection with the fund’s investments in foreign securities in order to hedge the fund’s currency exposure relative to the MSCI EAFE Value Index‑NR.
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| Putnam VT Large Cap Growth Fund | |
| Prospectus [Line Items] | |
| Strategy [Heading] | Investments, risks, and performance Investments |
| Strategy Narrative [Text Block] | The fund invests mainly in common stocks of large U.S. companies, with a focus on growth stocks. Growth stocks are stocks of companies whose earnings are expected to grow faster than those of similar firms, and whose business growth and other characteristics may lead to an increase in stock price. The Investment Manager, as defined below, may consider, among other factors, a company’s valuation, financial strength, growth potential, competitive position in its industry, projected future earnings, cash flows and dividends when deciding whether to buy or sell investments. Under normal circumstances, the fund invests at least 80% of its net assets (plus the amount of any borrowings for investment purposes) in companies of a size similar to those in the Russell 1000 Growth Index. This policy may be changed only after 60 days’ notice to shareholders. The fund is “non-diversified,” which means it may invest a greater percentage of its assets in fewer issuers than a “diversified” fund.
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| Putnam VT Large Cap Value Fund | |
| Prospectus [Line Items] | |
| Strategy [Heading] | Investments, risks, and performance Investments |
| Strategy Narrative [Text Block] | The fund invests mainly in common stocks of U.S. companies, with a focus on value stocks that offer the potential for capital growth, current income, or both. Under normal circumstances, the fund invests at least 80% of its net assets in large-cap companies, which, for purposes of this policy, are of a size similar to those in the Russell 1000 Value Index. This policy may be changed only after 60 days’ notice to shareholders. As of March 31, 2026, the index was composed of companies having market capitalizations of between approximately $907.1 million to $3.5 trillion. The fund may also invest in midsize companies. Value stocks are issued by companies that the Investment Manager believes are currently undervalued by the market. If the Investment Manager is correct and other investors ultimately recognize the value of the company, the price of its stock may rise. The Investment Manager may consider, among other factors, a company’s valuation, financial strength, growth potential, competitive position in its industry, projected future earnings, cash flows and dividends when deciding whether to buy or sell investments.
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| Putnam VT Mortgage Securities Fund | |
| Prospectus [Line Items] | |
| Strategy [Heading] | Investments, risks, and performance Investments |
| Strategy Narrative [Text Block] | The fund invests mainly in mortgages, mortgage-related fixed income securities and related derivatives that are either investment-grade or below-investment-grade in quality (sometimes referred to as “junk bonds”). Under normal circumstances, the fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in mortgages, mortgage-related fixed income securities and related derivatives (i.e., derivatives used to acquire exposure to, or whose underlying securities are, mortgages or mortgage-related securities). The fund generally uses the net unrealized gain or loss, or market value, of mortgage-related derivatives for purposes of this policy, but may use the notional value of a derivative if that is determined to be a more appropriate measure of the fund’s investment exposure. This policy may be changed only after 60 days’ notice to shareholders. The fund expects to invest in mortgage-backed investments that are obligations of U.S. government agencies and instrumentalities and accordingly are backed by the full faith and credit of the United States (e.g., Ginnie Mae mortgage-backed bonds) as well as in mortgage-backed investments that are backed by only the credit of a federal agency or government-sponsored entity (e.g., Fannie Mae and Freddie Mac mortgage-backed bonds), and that have short- to long-term maturities. The fund also expects to invest in lower-rated, higher-yielding mortgage-backed securities, including non‑agency residential mortgage-backed securities (which may be backed by non‑qualified or “sub‑prime” mortgages), commercial mortgage-backed securities, and collateralized mortgage obligations (including interest only, principal only, and other prepayment derivatives). Non‑agency (i.e., privately issued) securities typically are lower-rated and higher yielding than securities issued or backed by agencies such as Ginnie Mae, Fannie Mae or Freddie Mac. The fund currently has significant investment exposure to commercial mortgage-backed securities. While the fund’s emphasis will be on mortgage-backed securities, the fund may also invest to a lesser extent in other types of asset-backed securities. The Investment Manager may consider, among other factors, credit, interest rate, prepayment and liquidity risks, as well as general market conditions, when deciding whether to buy or sell investments. The Investment Manager typically uses to a significant extent derivatives, including credit default swaps, interest rate swaps, total return swaps, to‑be‑announced (TBA) commitments, futures, options and swaptions, including on mortgage-backed securities and indices, for both hedging and non‑hedging purposes, including to obtain or adjust exposure to mortgage-backed investments.
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| Putnam VT Small Cap Growth Fund | |
| Prospectus [Line Items] | |
| Strategy [Heading] | Investments, risks, and performance Investments |
| Strategy Narrative [Text Block] | The fund invests mainly in common stocks of small U.S. companies, with a focus on growth stocks. Growth stocks are stocks of companies whose earnings are expected to grow faster than those of similar firms, and whose business growth and other characteristics may lead to an increase in stock price. Under normal circumstances, the fund invests at least 80% of the fund’s net assets in companies of a size similar to those in the Russell 2000® Growth Index. This policy may be changed only after 60 days’ notice to shareholders. As of March 31, 2026, the index was composed of companies having market capitalizations of between approximately $4.4 million and $38.3 billion. The Investment Manager, as defined below, may consider, among other factors, a company’s valuation, financial strength, growth potential, competitive position in its industry, projected future earnings, cash flows and dividends when deciding whether to buy or sell investments.
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| Putnam VT Small Cap Value Fund | |
| Prospectus [Line Items] | |
| Strategy [Heading] | Investments, risks, and performance Investments |
| Strategy Narrative [Text Block] | The fund invests mainly in common stocks of small U.S. companies, with a focus on value stocks. Value stocks are issued by companies that the fund’s portfolio managers believe are currently undervalued by the market. If correct, and other investors ultimately recognize the value of the company, the price of its stock may rise. Under normal circumstances, the fund invests at least 80% of its net assets in companies of a size similar to those in the Russell 2000 Value Index. This policy may be changed only after 60 days’ notice to shareholders. As of March 31, 2026, the index was composed of companies having market capitalizations of between approximately $18.8 million and $33.8 billion. The fund’s portfolio managers may consider, among other factors, a company’s valuation, financial strength, growth potential, competitive position in its industry, projected future earnings, cash flows and dividends when deciding whether to buy or sell investments.
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| Putnam VT Sustainable Future Fund | |
| Prospectus [Line Items] | |
| Strategy [Heading] | Investments, risks, and performance Investments |
| Strategy Narrative [Text Block] | The fund invests mainly in common stocks of U.S. companies of any size, with a focus on companies whose products and services we believe provide solutions that directly contribute to sustainable social, environmental and economic development (Solutions Companies). Stocks of this type of company are typically, but not always, considered to be growth stocks. Growth stocks are stocks of companies whose revenues, earnings, or cash flows are expected to grow faster than those of similar firms, and whose business growth and other characteristics may lead to an increase in stock price. The Investment Manager, as defined below, may consider, among other factors, a company’s impact on sustainable environmental, social and economic development (as described below), valuation, financial strength, growth potential, competitive position in its industry, projected future earnings, cash flows and dividends when deciding whether to buy or sell investments. The fund may also invest in non-U.S. companies. The Investment Manager’s approach to sustainable investing incorporates fundamental research together with consideration of sustainable environmental, social and economic development impact. The Investment Manager believes that companies whose products and services produce positive environmental, social and economic development impact also often demonstrate potential for strong financial growth. Under normal circumstances, the fund invests at least 80% of the value of its net assets in securities that meet the Investment Manager’s sustainability criteria. These criteria are based on a proprietary sustainability solutions map that links to the United Nations Sustainable Development Goals (SDGs). In applying these criteria, the Investment Manager will assign each company a proprietary environmental, social and/or corporate governance (ESG) rating ranging from 1 to 4 (1 indicating the highest (best) ESG rating and 4 indicating the lowest (worst) ESG rating). In order to meet the Investment Manager’s sustainability criteria for purposes of this investment policy, a company must be rated 2 or 1 by the Investment Manager. This policy is non-fundamental and may be changed only after 60 days’ notice to shareholders. In selecting each investment, the Investment Manager considers the extent to which a company’s products or services may provide solutions to forward-looking sustainability needs, creating positive impact in environmental, social and economic development areas. Environmental impacts may include, for example, reduction of carbon emissions and improved water quality. Social impacts may include, for example, improvements in employee well-being, supplier standards, or access to products, information, or security. Economic development impacts may include, for example, stakeholder analysis and shared value approaches to business practices, access to economic opportunity, or improvements in operational effectiveness or efficiency.
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| Putnam VT Sustainable Leaders Fund | |
| Prospectus [Line Items] | |
| Strategy [Heading] | Investments, risks, and performance Investments |
| Strategy Narrative [Text Block] | The fund invests mainly in common stocks of U.S. companies of any size, with a focus on companies that the Investment Manager, as defined below, believes exhibit a commitment to financially material sustainable business practices. The fund may also invest in non‑U.S. companies. In evaluating investments for the fund, the Investment Manager views “financially material sustainable business practices” as business practices that it believes are reasonably likely to impact the financial condition or operating performance of a company and that relate to environmental, social, or corporate governance (“ESG”) issues. The Investment Manager identifies relevant ESG issues on a sector-specific basis using an internally developed materiality map, which is informed by the industry-specific financial materiality framework of the Sustainability Accounting Standards Board (“SASB,” now incorporated in the International Financial Reporting Standards Foundation). As part of this analysis, the Investment Manager may utilize metrics and information such as emissions data, carbon intensity, sources of energy used for operations, water use and re‑use, water generation, waste diversion from landfill, employee safety and diversity data, supplier audits, product safety, board composition, and incentive compensation structures. Stocks of companies that exhibit a commitment to financially material sustainable business practices are typically, but not always, considered to be growth stocks. Growth stocks are stocks of companies whose revenues, earnings, or cash flows are expected to grow faster than those of similar firms, and whose business growth and other characteristics may lead to an increase in stock price. The Investment Manager may consider, among other factors, a company’s sustainable business practices (as described above), valuation, financial strength, growth potential, competitive position in its industry, projected future earnings, cash flows and dividends when deciding whether to buy or sell investments. The fund may also invest in non‑U.S. companies. Under normal circumstances, the fund invests at least 80% of the value of its net assets in securities that meet the Investment Manager’s sustainability criteria. These criteria are based on a proprietary materiality map that is informed by the industry-specific financial materiality framework of SASB. In applying these criteria, the Investment Manager will assign each company a proprietary ESG rating ranging from 1 to 4 (1 indicating the highest (best) ESG rating and 4 indicating the lowest (worst) ESG rating). In order to meet the Investment Manager’s sustainability criteria for purposes of this investment policy, a company must be rated 2 or 1 by the Investment Manager. This policy is non‑fundamental and may be changed only after 60 days’ notice to shareholders. In selecting each investment, the Investment Manager focuses on companies that have a demonstrated commitment to sustainable business practices in areas that are relevant and material to their long-term financial returns and risk profiles. The Investment Manager believes that companies that have exhibited such a commitment also often demonstrate potential for strong financial growth. This commitment may be reflected through ESG policies, practices, or outcomes. The fund’s approach to sustainable investing incorporates fundamental research together with consideration of ESG factors. Environmental factors include, for example, a company’s carbon intensity and use of resources like water or minerals. Sustainability measures in this area might include plans to reduce waste, increase recycling, raise the proportion of energy supply from renewable sources, or improve product design to be less resource intensive. Social factors include, for example, labor practices and supply chain management. Sustainability measures in this area might include programs to improve employee well-being, commitment to workplace equality and diversity, or improved stewardship of supplier relationships and working conditions. Corporate governance factors include, for example, board composition and executive compensation. Sustainability measures in this area might include improvements in board independence or diversity, or alignment of management incentives with the company’s strategic sustainability objectives. The Investment Manager’s integrated approach combines analysis of the growing body of ESG data and deep fundamental analysis and looks for companies that demonstrate leadership, beyond compliance, on relevant sustainability issues. The characteristics that the Investment Manager may use when considering sustainability leadership include: (1) Material. Focused on strategic, business-relevant issues. (2) Proactive. Actions that go beyond basic requirements to create potential business benefit. (3) Transparent. Reporting that is relevant, timely, and candid. (4) Effective. Creating benefits both within the firm and beyond its corporate borders.
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| Putnam VT Research Fund | |
| Prospectus [Line Items] | |
| Strategy [Heading] | Investments, risks, and performance Investments |
| Strategy Narrative [Text Block] | Under normal circumstances, the fund will invest at least 80% of its net assets (plus the amount of borrowings for investment purposes, if any) in equity securities of companies located in the United States. This policy may be changed only after 60 days’ notice to shareholders. Equity securities include common stocks, preferred stocks, and convertible securities. The fund considers a company to be located in the United States if the company’s securities trade in the United States, the company is headquartered or organized in the United States or the company derives a majority of its revenues or profits in the United States. The fund invests mainly in common stocks (growth or value stocks or both) of large U.S. companies that the Investment Manager, as defined below, believes have favorable investment potential. The fund’s portfolio managers work with sector analysts from the Putnam Equity Research team to identify high-conviction stocks within an analyst’s respective sector, using a bottom-up, fundamental research investment process. The Investment Manager may consider, among other factors, a company’s valuation, financial strength, growth potential, competitive position in its industry, projected future earnings, cash flows, and dividends when deciding whether to buy or sell investments. The Investment Manager attempts to mitigate risk in the portfolio by applying an integrated process to identify, assess, monitor, and address unintended risks.
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