Patterson-UTI Energy Sees Institutional Investor Adjustments Institutional investors are reshaping holdings in Patterson-UTI Energy (NASDAQ:PTEN). Rhumbline Advisers acquired 22,413 shares, while other firms like Pacer Advisors and State Street Corp increased stakes. However, insider trading activity shows significant stock sales, reflecting mixed sentiment. The stock's recent decline of 5.5% highlights ongoing market challenges for the company.2