Aristotle Capital Boston, LLC, an investment advisor, recently released its fourth-quarter investor letter for the “Small Cap Equity Fund”. U.S. small-cap equities experienced modest gains in the fourth quarter of 2025. The quarter began with a continuation of the post-Liberation Day risk-on market environment and ended on a strong note, driven by a positive macroeconomic backdrop. Small caps were supported by attractive valuations, earnings recovery, broadening market dynamics, and a shift from mega-cap stocks. The Aristotle Small Cap Equity Fund (Class I-2) delivered a return of 1.96% in Q4 2025, slightly below the 2.19% total return of the Russell 2000 Index. While security selection contributed positively to performance, allocation effects had a detracting impact.
In their investor letter, Aristotle Small Cap Equity Fund highlighted Acadia Healthcare Company, Inc. (NASDAQ:ACHC) as a major performance detractor. Established in 2005, Acadia Healthcare Company, Inc. (NASDAQ:ACHC) is a provider of behavioral healthcare services. As of February 13, 2026, the stock closed at $16.77 per share, with a one-month return of 43.58% and a -59.16% decline over the past twelve months. The company boasts a market capitalization of $1.517 billion.
Regarding Acadia Healthcare Company, Inc. (NASDAQ:ACHC) in the fourth quarter of 2025, Aristotle Small Cap Equity Fund stated that the stock experienced a sell-off following mixed third-quarter earnings results. Despite beating estimates, management revised forward guidance lower, leading to a decline in the stock price. The company plans to reduce capital expenditure and focus on enhancing operational efficiency to boost free cash flow. Aristotle Capital Boston, LLC remains optimistic about Acadia Healthcare Company, Inc. (NASDAQ:ACHC) as a key player in addressing the increasing demand for behavioral health services.
While Acadia Healthcare Company, Inc. (NASDAQ:ACHC) is not among the 30 Most Popular Stocks Among Hedge Funds, 40 hedge fund portfolios held the stock at the end of the third quarter, up from 39 in the previous quarter. While acknowledging the potential of Acadia Healthcare Company, Inc. (NASDAQ:ACHC) as an investment, Aristotle Capital Boston, LLC believes that certain AI stocks offer greater upside potential with lower downside risk. For investors seeking an undervalued AI stock that could benefit from Trump-era tariffs and the onshoring trend, they recommend exploring their free report on the best short-term AI stock.
In conclusion, Aristotle Capital Boston, LLC’s fourth-quarter investor letter sheds light on their assessment of Acadia Healthcare Company, Inc. (NASDAQ:ACHC) and their investment strategy for small-cap equities in 2025. Investors can gain insights from their analysis and consider their recommendations for potential investment opportunities in the market.

