Castleark's Q1 Investment Drive
Castleark Management Expands Portfolio with Five New Key Stakes Across Diverse Firms
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Key Points
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KLIC: Castleark Management LLC’s stake is part of a broader pattern of heavy institutional ownership at Kulicke and Soffa, with hedge funds and institutions owning 98.22% of the stock.
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Moody’s institutional ownership is high, with Vanguard Group Inc. significantly increasing its position to 15,272,967 shares (roughly $7.80 billion) after adding 102,682 shares in the last quarter.
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Permian Resources shows very high institutional ownership at 91.84%, and its stock opened at $21.34 with a 52-week range between $11.92 and $22.67, indicating a tightly held position by institutions.
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Ultra Clean Holdings also has a high level of institutional ownership (96.06%), with the stock opening at $92.75 and a 52-week high near $144.22, underscoring strong institutional interest despite a negative trailing P/E.
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Tutor Perini saw a insider-facing move as Director Robert C. Lieber sold 17,500 shares, even as institutions own about 65.01% of the stock, reflecting ongoing activity among large holders.
Castleark Management LLC made a series of bold new bets in the first quarter, opening fresh positions in five companies worth a combined roughly $43 million. The Chicago-based hedge fund snapped up shares in Permian Resources, Kulicke and Soffa Industries, Moody's Corporation, Ultra Clean Holdings, and Tutor Perini, according to Watchlist News and Ticker Report.
The moves came during a busy quarter for institutional investors broadly. Castleark's activity was not limited to these five names — it also added shares in Lincoln Educational Services, Atmus Filtration Technologies, Fastenal, and Taiwan Semiconductor, painting a picture of an aggressive expansion across sectors.
Permian Resources and Moody's Draw the Biggest Dollars
Castleark's largest new position by dollar value landed in Permian Resources. The fund bought 630,980 shares worth about $13.45 million. The oil producer's stock opened at $21.34, within a 52-week range of $11.92 to $22.67, according to Ticker Report. Institutions already own 91.84% of Permian's shares, making it one of the most tightly held names in Castleark's new portfolio.
Moody's Corporation was the fund's second-largest new buy, with 16,900 shares valued at roughly $7.37 million. Moody's draws heavy institutional interest across the board. Vanguard Group alone holds 15,272,967 shares — worth about $7.80 billion — after adding 102,682 shares in the last quarter, according to Watchlist News.
Kulicke, Ultra Clean, and Tutor Perini Round Out the Buys
Castleark picked up 106,380 shares of Kulicke and Soffa Industries for about $6.99 million. Kulicke is almost entirely owned by institutions and hedge funds — 98.22% of the stock sits in institutional hands, according to Ticker Report. That level of concentration signals strong conviction among professional investors in the semiconductor equipment maker.
The fund also bought 100,130 shares of Ultra Clean Holdings for around $6.23 million and 116,440 shares of Tutor Perini for about $8.99 million. Ultra Clean carries a 96.06% institutional ownership rate. Its stock opened at $92.75, well below its 52-week high of $144.22. Tutor Perini is less institutionally dominated, with about 65.01% owned by big holders, according to Watchlist News.
Insider Selling at Tutor Perini Adds a Contrarian Note
Not everyone is buying into Tutor Perini. Director Robert C. Lieber sold 17,500 shares of the construction firm even as Castleark was building its new stake. Insider sales do not always signal trouble, but they stand out against the backdrop of fresh institutional buying, according to Watchlist News.
The divergence between insider selling and institutional buying is a common tension in markets. Castleark's $8.99 million bet suggests the fund sees value where Lieber chose to cash out. Institutions now hold roughly 65.01% of Tutor Perini's outstanding shares.
Castleark's Broader Q1 Push Goes Well Beyond Five Names
Castleark's new positions were part of a wider buying spree. The fund also took a new stake of 150,610 shares in Lincoln Educational Services and 119,350 shares of Atmus Filtration Technologies worth $6.78 million, according to Watchlist News. It boosted its Fastenal stake by 2,048.7%, bringing its total to 148,690 shares, per Ticker Report.
The fund also grew its Taiwan Semiconductor position by 13.6%, adding 4,920 shares valued at $13.93 million. Taken together, these moves show a firm that spent the first quarter leaning hard into both new ideas and existing winners across tech, energy, and industrials.
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