ProShares UltraShort Solana ETF Investment Strategy - ProShares UltraShort Solana ETF	May 31, 2025
Prospectus [Line Items]
Strategy [Heading]	<span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">Principal Investment Strategies</span>
Strategy Narrative [Text Block]	The Fund invests in financial instruments that ProShare Advisors believes, in combination, should produce daily returns consistent with the Daily Target. In this manner, the Fund seeks daily returns that correspond to two times the inverse (-2x) of the price of Solana (SOL). The Fund does not directly short Solana (SOL).SOL, commonly referred to as Solana, is a digital asset. The ownership and operation of Solana (SOL) is determined by participants in an online, peer-to-peer network sometimes referred to as the “Solana network.” The Solana network connects computers that run publicly accessible, or “open source,” software that follows the rules and procedures governing the Solana network. This is commonly referred to as the Solana protocol (and is described in more detail in the section entitled “The Solana protocol” in the Fund’s Prospectus). The Solana protocol was introduced in 2017 and uses the Proof-of-History (“PoH”) timestamping mechanism. PoH is a timestamping mechanism that automatically orders on-chain transactions by creating a historical record that proves an event has occurred at a specific moment in time. The value of Solana (SOL) is not backed by any government, corporation, or other identified body. Instead, its value is determined in part by the supply and demand in markets created to facilitate the trading of Solana (SOL). Ownership and transaction records for Solana (SOL) are protected through public-key cryptography. The supply of Solana (SOL) is determined by the Solana protocol. No single entity owns or operates the Solana network. The Solana network is collectively maintained by (1) a decentralized group of participants who run computer software that results in the recording and validation of transactions (commonly referred to as “validators”), (2) developers who propose improvements to the Solana protocol and the software that enforces the protocol and (3) users who choose which version of the Solana software to run. From time to time, the developers suggest changes to the Solana software. If a validator elects not to adopt the changes, or implements changes independently, a new digital asset operating on a modified version of the Solana software, may be created. This is often referred to as a “fork.” The price of the Solana (SOL) instruments in which the Fund invests may reflect the impact of these forks.The Index is designed to measure the performance of a single Solana (SOL) traded in USD and seeks to provide a proxy for the Solana (SOL) market. The Index price is a composite of U.S. dollar-Solana (SOL) trading activity reported by certain digital asset trading platforms that are evaluated based on a variety of different criteria, including the trading platforms’ oversight and governance controls, liquidity, capital controls, data transparency and data integrity. The digital asset trading platforms included in the Index are reevaluated quarterly. The Index is constructed and maintained by Bloomberg Index Services Limited. More information about the Index can be found using the Bloomberg ticker symbol “BSOLANA”.Under normal circumstances, the Fund will obtain inverse leveraged exposure to at least 80% of its total assets in components of the Index or in instruments with similar economic characteristics.The Fund will invest principally in the financial instruments listed below.●Derivatives — Financial instruments whose value is derived from the value of an underlying asset or rate, such as stocks, bonds, ETFs, interest rates or indexes. The Fund invests in derivatives (e.g. Solana (SOL) futures contracts) in order to gain inverse leveraged exposure to the Index. These derivatives principally include:○Solana (SOL) Futures Contracts – Standardized, cash-settled Solana (SOL) futures contracts traded on commodity exchanges registered with the Commodity Futures Trading Commission (“CFTC”). The Fund seeks to invest in cash-settled, front-month Solana (SOL) futures. In order to obtain inverse or “short” exposure, the Fund intends to enter into cash-settled Solana (SOL) futures contracts as the “seller.” In simplest terms, in a cash-settled futures market the seller pays the counterparty if the price of a futures contract goes up and receives cash from the counterparty if the price of the futures contract goes down. The Fund may also invest in back-month Solana (SOL) futures contracts. Front-month Solana (SOL) futures contracts are those contracts with the shortest time to maturity. Back-month Solana (SOL) futures contracts are those with longer times to maturity.●Money Market Instruments — The Fund expects that any cash balances maintained in connection with its use of derivatives will typically be held in high quality, short-term money market instruments, for example:○U.S. Treasury Bills — U.S. government securities that have initial maturities of one year or less, and are supported by the full faith and credit of the U.S. government.○Repurchase Agreements — Contracts in which a seller of securities, usually U.S. government securities or other money market instruments, agrees to buy the securities back at a specified time and price.●Reverse Repurchase Agreements – The Fund seeks to engage in reverse repurchase agreements, a form of borrowing or leverage, and uses the proceeds to help achieve the Fund’s investment objective.ProShare Advisors uses a mathematical approach to investing in which it determines the type, quantity and mix of investment positions that it believes, in combination, the Fund should hold to produce daily returns consistent with the Daily Target. For these purposes a day is measured from the time of one net asset value (“NAV”) calculation to the next. The Fund seeks to remain fully invested at all times in financial instruments that, in combination, provide inverse leveraged exposure consistent with the investment objective, without regard to market conditions, trends or direction. The Fund seeks to rebalance its portfolio each day so that its exposure to the Index is consistent with the Daily Target. The Index’s movements during the day will affect whether the Fund’s portfolio needs to be rebalanced. For example, if the Index has risen on a given day, net assets of the Fund should fall (assuming there were no Creation Units issued). As a result, the Fund’s exposure will need to be decreased. Conversely, if the Index has fallen on a given day, net assets of the Fund should rise (assuming there were no Creation Unit redemptions). As a result, the Fund’s exposure will need to be increased.In order to maintain its inverse exposure to the Index, the Fund intends to exit its futures contracts as they near expiration and replace them with new futures contracts with a later expiration date. Futures contracts with a longer term to expiration may be priced lower than futures contracts with a shorter term to expiration, a relationship called “backwardation.” When rolling short futures contracts that are in backwardation, the Fund will close its short position by buying the expiring contract at a relatively higher price and selling a longer-dated contract at a relatively lower price. The presence of backwardation would be expected to adversely affect the performance of the Fund. Conversely, futures contracts with a longer term to expiration may be priced higher than futures contracts with a shorter term to expiration, a relationship called “contango.” When rolling short futures contracts that are in contango, the Fund will close its short position by buying the expiring contract at a relatively lower price and selling a longer-dated contract at a relatively higher price. The presence of contango may positively affect the performance of the Fund.The Fund expects to gain inverse leveraged exposure by investing a portion of its assets in a wholly-owned subsidiary of the Fund organized under the laws of the Cayman Islands and advised by ProShare Advisors. Because the Fund intends to qualify for treatment as a regulated investment company (“RIC”) under Subchapter M of the Internal Revenue Code of 1986, as amended, the Fund intends to invest no more than 25% of the Fund’s total assets (including any borrowings) in the subsidiary at each quarter end of the Fund’s tax year. During such periods, the Fund will seek to borrow using reverse repurchase agreements, incurring significant borrowing costs, and the Fund’s returns may be significantly lower than the Daily Target during such periods at the end of each tax quarter (e.g., July 31, 2025, October 31, 2025, January 30, 2026, and April 30, 2026). In addition, the Fund may be required to dispose of a portion of its futures contracts, may not be able to obtain inverse leveraged exposure consistent with its Daily Target, and may or may not meet its investment objective as of the end of each tax quarter. Exceeding the 25% limit may have tax consequences, see the section entitled “Tax Risk” in the Fund’s Prospectus for more information. References to investments by the Fund should be read to mean investments by either the Fund or the subsidiary.Please see “Investment Objectives, Principal Investment Strategies and Related Risks” in the Fund’s Prospectus for additional details.

ProShares UltraShort Solana ETF Investment Strategy - ProShares UltraShort Solana ETF

May 31, 2025

<span style="color:#000000;font-family:Arial Narrow;font-size:11pt;font-weight:bold;">Principal Investment Strategies</span>

Strategy Narrative [Text Block]

The Fund invests in financial instruments that ProShare Advisors believes, in combination, should produce daily returns consistent with the Daily Target. In this manner, the Fund seeks daily returns that correspond to two times the inverse (-2x) of the price of Solana (SOL). The Fund does not directly short Solana (SOL).SOL, commonly referred to as Solana, is a digital asset. The ownership and operation of Solana (SOL) is determined by participants in an online, peer-to-peer network sometimes referred to as the “Solana network.” The Solana network connects computers that run publicly accessible, or “open source,” software that follows the rules and procedures governing the Solana network. This is commonly referred to as the Solana protocol (and is described in more detail in the section entitled “The Solana protocol” in the Fund’s Prospectus). The Solana protocol was introduced in 2017 and uses the Proof-of-History (“PoH”) timestamping mechanism. PoH is a timestamping mechanism that automatically orders on-chain transactions by creating a historical record that proves an event has occurred at a specific moment in time. The value of Solana (SOL) is not backed by any government, corporation, or other identified body. Instead, its value is determined in part by the supply and demand in markets created to facilitate the trading of Solana (SOL). Ownership and transaction records for Solana (SOL) are protected through public-key cryptography. The supply of Solana (SOL) is determined by the Solana protocol. No single entity owns or operates the Solana network. The Solana network is collectively maintained by (1) a decentralized group of participants who run computer software that results in the recording and validation of transactions (commonly referred to as “validators”), (2) developers who propose improvements to the Solana protocol and the software that enforces the protocol and (3) users who choose which version of the Solana software to run. From time to time, the developers suggest changes to the Solana software. If a validator elects not to adopt the changes, or implements changes independently, a new digital asset operating on a modified version of the Solana software, may be created. This is often referred to as a “fork.” The price of the Solana (SOL) instruments in which the Fund invests may reflect the impact of these forks.The Index is designed to measure the performance of a single Solana (SOL) traded in USD and seeks to provide a proxy for the Solana (SOL) market. The Index price is a composite of U.S. dollar-Solana (SOL) trading activity reported by certain digital asset trading platforms that are evaluated based on a variety of different criteria, including the trading platforms’ oversight and governance controls, liquidity, capital controls, data transparency and data integrity. The digital asset trading platforms included in the Index are reevaluated quarterly. The Index is constructed and maintained by Bloomberg Index Services Limited. More information about the Index can be found using the Bloomberg ticker symbol “BSOLANA”.Under normal circumstances, the Fund will obtain inverse leveraged exposure to at least 80% of its total assets in components of the Index or in instruments with similar economic characteristics.The Fund will invest principally in the financial instruments listed below.●Derivatives — Financial instruments whose value is derived from the value of an underlying asset or rate, such as stocks, bonds, ETFs, interest rates or indexes. The Fund invests in derivatives (e.g. Solana (SOL) futures contracts) in order to gain inverse leveraged exposure to the Index. These derivatives principally include:○Solana (SOL) Futures Contracts – Standardized, cash-settled Solana (SOL) futures contracts traded on commodity exchanges registered with the Commodity Futures Trading Commission (“CFTC”). The Fund seeks to invest in cash-settled, front-month Solana (SOL) futures. In order to obtain inverse or “short” exposure, the Fund intends to enter into cash-settled Solana (SOL) futures contracts as the “seller.” In simplest terms, in a cash-settled futures market the seller pays the counterparty if the price of a futures contract goes up and receives cash from the counterparty if the price of the futures contract goes down. The Fund may also invest in back-month Solana (SOL) futures contracts. Front-month Solana (SOL) futures contracts are those contracts with the shortest time to maturity. Back-month Solana (SOL) futures contracts are those with longer times to maturity.●Money Market Instruments — The Fund expects that any cash balances maintained in connection with its use of derivatives will typically be held in high quality, short-term money market instruments, for example:○U.S. Treasury Bills — U.S. government securities that have initial maturities of one year or less, and are supported by the full faith and credit of the U.S. government.○Repurchase Agreements — Contracts in which a seller of securities, usually U.S. government securities or other money market instruments, agrees to buy the securities back at a specified time and price.●Reverse Repurchase Agreements – The Fund seeks to engage in reverse repurchase agreements, a form of borrowing or leverage, and uses the proceeds to help achieve the Fund’s investment objective.ProShare Advisors uses a mathematical approach to investing in which it determines the type, quantity and mix of investment positions that it believes, in combination, the Fund should hold to produce daily returns consistent with the Daily Target. For these purposes a day is measured from the time of one net asset value (“NAV”) calculation to the next. The Fund seeks to remain fully invested at all times in financial instruments that, in combination, provide inverse leveraged exposure consistent with the investment objective, without regard to market conditions, trends or direction. The Fund seeks to rebalance its portfolio each day so that its exposure to the Index is consistent with the Daily Target. The Index’s movements during the day will affect whether the Fund’s portfolio needs to be rebalanced. For example, if the Index has risen on a given day, net assets of the Fund should fall (assuming there were no Creation Units issued). As a result, the Fund’s exposure will need to be decreased. Conversely, if the Index has fallen on a given day, net assets of the Fund should rise (assuming there were no Creation Unit redemptions). As a result, the Fund’s exposure will need to be increased.In order to maintain its inverse exposure to the Index, the Fund intends to exit its futures contracts as they near expiration and replace them with new futures contracts with a later expiration date. Futures contracts with a longer term to expiration may be priced lower than futures contracts with a shorter term to expiration, a relationship called “backwardation.” When rolling short futures contracts that are in backwardation, the Fund will close its short position by buying the expiring contract at a relatively higher price and selling a longer-dated contract at a relatively lower price. The presence of backwardation would be expected to adversely affect the performance of the Fund. Conversely, futures contracts with a longer term to expiration may be priced higher than futures contracts with a shorter term to expiration, a relationship called “contango.” When rolling short futures contracts that are in contango, the Fund will close its short position by buying the expiring contract at a relatively lower price and selling a longer-dated contract at a relatively higher price. The presence of contango may positively affect the performance of the Fund.The Fund expects to gain inverse leveraged exposure by investing a portion of its assets in a wholly-owned subsidiary of the Fund organized under the laws of the Cayman Islands and advised by ProShare Advisors. Because the Fund intends to qualify for treatment as a regulated investment company (“RIC”) under Subchapter M of the Internal Revenue Code of 1986, as amended, the Fund intends to invest no more than 25% of the Fund’s total assets (including any borrowings) in the subsidiary at each quarter end of the Fund’s tax year. During such periods, the Fund will seek to borrow using reverse repurchase agreements, incurring significant borrowing costs, and the Fund’s returns may be significantly lower than the Daily Target during such periods at the end of each tax quarter (e.g., July 31, 2025, October 31, 2025, January 30, 2026, and April 30, 2026). In addition, the Fund may be required to dispose of a portion of its futures contracts, may not be able to obtain inverse leveraged exposure consistent with its Daily Target, and may or may not meet its investment objective as of the end of each tax quarter. Exceeding the 25% limit may have tax consequences, see the section entitled “Tax Risk” in the Fund’s Prospectus for more information. References to investments by the Fund should be read to mean investments by either the Fund or the subsidiary.Please see “Investment Objectives, Principal Investment Strategies and Related Risks” in the Fund’s Prospectus for additional details.