v3.26.1
Investment Strategy - Baron WealthBuilder Fund
Dec. 31, 2025
Prospectus [Line Items]  
Strategy [Heading] Investments, Risks, and Performance Principal Investment Strategies of the Fund
Strategy Narrative [Text Block]
The Fund is a diversified fund because it invests, at any given time, in the securities of a select number of Baron mutual funds and affiliated exchange-traded funds (“ETFs” and collectively, the “Underlying Funds”), representing specific investment strategies. The Fund normally invests in a variety of domestic and international equity funds. The Adviser seeks to invest in businesses it believes have significant opportunities for growth, sustainable competitive advantages, exceptional management, and an attractive valuation.
The Fund can invest in funds holding U.S. and international stocks; small-cap, small- to mid-cap, mid-cap, large-cap, all-cap stocks; and sector specific stocks.
The portfolio manager decides how much of the Fund’s assets to allocate to underlying fund investments based on the outlook for, and on the relative valuations of, the Underlying Funds and the various markets in which they invest.
Underlying Funds
 
Baron WealthBuilder Fund
   
Strategy   Fund
   
Small Cap   Baron Discovery Fund
  Baron Small Cap Fund
  Baron Growth Fund
   
Small-Mid Cap   Baron Focused Growth Fund
  Baron SMID Cap ETF
   
Mid Cap   Baron Asset Fund
   
Large Cap   Baron Fifth Avenue Growth Fund
  Baron Durable Advantage Fund
   
All Cap   Baron Partners Fund
  Baron Opportunity Fund
  Baron First Principles ETF
   
International / Global   Baron International Growth Fund
  Baron Emerging Markets Fund
  Baron Global Opportunity Fund
  Baron India Fund
  Baron Global Durable Advantage ETF
  Baron Emerging Markets Select ETF
   
Sector   Baron Real Estate Fund
  Baron Real Estate Income Fund
  Baron Health Care Fund
  Baron Financials ETF
  Baron Technology ETF
The Fund may sell shares of the Underlying Funds for a variety of reasons, such as to secure gains, limit losses, or redeploy assets into more promising opportunities. The Fund may also modify the list of Underlying Funds at any time, including by adding Underlying Funds that may be created in the future, or change the Fund’s asset allocation at any time, in each case without prior approval from or notice to shareholders. At certain periods, the Fund may hold a portion of its assets in cash, money market securities or other similar liquid investments.