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Diamond Hill Capital, a First Eagle Investment Management company, issued its Q2 2026 investor letter for its "Mid Cap Strategy". A copy of the Q2 2026 investor letter can be downloaded here. In the quarter, equity markets posted strong returns as resilient economic growth and robust corporate earnings supported investor sentiment, although AI-related companies continued to dominate market leadership. Technology was the strongest-performing sector, while industrials also advanced and energy lagged as oil prices declined. The Fund returned 7.92% and the Russell Midcap Index returned 13.83%. Health care holdings were the largest positive contributor, supported by strength across managed care, diagnostics, and life sciences. However, stock selection and an underweight position in information technology remained the main relative headwinds. The strategy maintained limited exposure to highly valued semiconductor and memory companies, reflecting concerns that current valuations assume an extended period of elevated AI spending. It also continued to assess software and services businesses individually based on how AI may affect their long-term competitive positions. Management emphasized higher-quality companies, attractive valuations, capital preservation, and durable long-term compounding while remaining cautious about elevated valuations, concentrated leadership, and the sustainability of the current AI investment cycle. Please review the Strategy's top five holdings for its key selections.

In its second-quarter 2026 investor letter, Diamond Hill Capital Mid Cap Strategy highlighted Huntington Ingalls Industries, Inc. (NYSE:HII). Huntington Ingalls Industries, Inc. (NYSE:HII) is US-based military shipbuilding company. On August 4, 2026, Huntington Ingalls Industries, Inc. (NYSE:HII) closed at $323.06 per share. One-month return of Huntington Ingalls Industries, Inc. (NYSE:HII) was 11.60% and its shares gained 20.77% over the past 52 weeks. Huntington Ingalls Industries, Inc. (NYSE:HII) has a market capitalization of $12.84 billion with a 52-week trading range between $259.00 - $460.00.

Diamond Hill Capital Mid Cap Strategy stated the following regarding Huntington Ingalls Industries, Inc. (NYSE:HII) in its Q2 2026 investor letter:

"Huntington Ingalls Industries, Inc. (NYSE:HII), the largest shipbuilder for the US Navy, underperformed following mixed 1Q26 results. Strong revenue growth was offset by margin pressure from execution challenges and legacy pre-COVID contracts, while the broader defense sector weakened amid delays to US defense funding legislation and improving geopolitical tensions."

Huntington Ingalls Industries, Inc. (NYSE:HII) is not on our list of the 40 Most Popular Stocks Among Hedge Funds. As per our database, 40 hedge fund portfolios held Huntington Ingalls Industries, Inc. (NYSE:HII) at the end of the first quarter which was 39 in the previous quarter. While we acknowledge the potential of Huntington Ingalls Industries, Inc. (NYSE:HII) 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 Huntington Ingalls Industries, Inc. (NYSE:HII) and shared a list of stocks that surpassed earnings expectations. In addition, please check out our hedge fund investor letters Q2 2026 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.