Factors Led TimesSquare Capital U.S. Small Cap Growth Strategy to Pick Mirion Technologies (MIR)

TimesSquare Capital Management, an equity investment management company, released its “U.S. Small Cap Growth Strategy” third-quarter 2025 investor letter. A copy of the letter can be downloaded here. During the quarter, the fund returned 2.26% (gross) and 2.01% (net), compared to the Russell 2000 Growth Index’s 12.19% return. During the quarter, all asset classes except fixed income outside the U.S. posted positive returns. In addition, please check the fund’s top five holdings to know its best picks in 2025.

In its third-quarter 2025 investor letter, TimesSquare Capital U.S. Small Cap Growth Strategy highlighted stocks such as Mirion Technologies, Inc. (NYSE:MIR). Headquartered in Atlanta, Georgia, Mirion Technologies, Inc. (NYSE:MIR) offers radiation detection, measurement, analysis, and monitoring products and services that operate in the Medical and Nuclear & Safety segments. The one-month return of Mirion Technologies, Inc. (NYSE:MIR) was -2.18%, and its shares gained 44.66% of their value over the last 52 weeks. On January 5, 2026, Mirion Technologies, Inc. (NYSE:MIR) stock closed at $24.65 per share, with a market capitalization of $6.024 billion.

TimesSquare Capital U.S. Small Cap Growth Strategy stated the following regarding Mirion Technologies, Inc. (NYSE:MIR) in its third quarter 2025 investor letter:

"Joining the strategy this quarter was Mirion Technologies, Inc. (NYSE:MIR), which manufactures radiation detection, measurement, and monitoring products serving nuclear power and medical applications. Its nuclear power solutions are used in over 95% of the world’s nuclear reactors while its medical products have a presence in 80% of the world’s cancer centers. The recent acquisition of Paragon Energy Solutions provides Mirion with additional safety-related offerings for nuclear power plants and provides Mirion with greater relevance to the small modular reactor (SMR) market via design wins with well-capitalized SMR manufacturers."

Mirion Technologies, Inc. (NYSE:MIR) is not on our list of 30 Most Popular Stocks Among Hedge Funds. According to our database, 44 hedge fund portfolios held Mirion Technologies, Inc. (NYSE:MIR) at the end of the third quarter, compared to 46 in the previous quarter. In the third quarter of 2025, Mirion Technologies, Inc. (NYSE:MIR) reported revenue of $223 million, a year-over-year increase of nearly 8%. While we acknowledge the potential of Mirion Technologies, Inc. (NYSE:MIR) as an investment, we believe certain AI stocks offer greater upside potential and carry less downside risk. If you're looking for an extremely undervalued AI stock that also stands to benefit significantly from Trump-era tariffs and the onshoring trend, see our free report on the best short-term AI stock.

In another article, we covered Mirion Technologies, Inc. (NYSE:MIR) and shared the list of stocks surged in double digits. In addition, please check out our hedge fund investor letters Q3 2025 page for more investor letters from hedge funds and other leading investors.

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Disclosure: None. This article is originally published at Insider Monkey.