Baron Funds, a renowned investment management company, recently shared its third-quarter 2025 investor letter for the Baron Real Estate Fund. The fund showcased impressive performance during the quarter, with a substantial appreciation of 10.25% for its Institutional Shares. This outperformed both the MSCI US REIT Index, which saw a 4.49% increase, and the MSCI USA IMI Extended Real Estate Index, which experienced a 5.65% growth.
For investors looking to delve deeper into the fund’s top holdings for 2025, the letter provides valuable insights. One notable stock highlighted in the letter is Iron Mountain Incorporated (NYSE:IRM). This Real Estate Investment Trust (REIT) specializes in storage and information management solutions. Despite a one-month return of -4.36% and a 12.79% decrease in share value over the past year, Iron Mountain Incorporated closed at $101.15 per share on November 11, 2025, with a market capitalization of $29.899 billion.
Baron Real Estate Fund expressed optimism about its investment in Iron Mountain Incorporated in the third quarter of 2025. The fund identified the stock as offering a compelling valuation and promising long-term growth prospects. With a focus on record storage management and a rapidly expanding data center segment, Iron Mountain Incorporated presents an attractive investment opportunity.
It is worth noting that Iron Mountain Incorporated (NYSE:IRM) is not among the 30 Most Popular Stocks Among Hedge Funds. However, 47 hedge fund portfolios held shares of Iron Mountain Incorporated at the end of the second quarter, indicating growing interest in the stock. In the third quarter of 2025, the company reported a 13% increase in revenue, reaching $1.8 billion.
While Baron Real Estate Fund recognizes the potential of Iron Mountain Incorporated as an investment, the fund believes that certain Artificial Intelligence (AI) stocks offer greater upside potential with lower downside risk. For investors seeking undervalued AI stocks with significant growth prospects, exploring the free report on the best short-term AI stock could be beneficial.
Overall, Baron Real Estate Fund’s third-quarter 2025 investor letter provides valuable insights into the fund’s performance and top holdings. Investors can leverage this information to make informed decisions and potentially capitalize on the promising opportunities presented by companies like Iron Mountain Incorporated in the dynamic real estate market.

