We just covered the From Fired Researcher to $13.7 Billion King: How Leopold Aschenbrenner Broke the Hedge Fund World and Power Solutions International, Inc. (NASDAQ:PSIX) ranks 22nd on this list.
Power Solutions International, Inc. (NASDAQ:PSIX) first appeared in the 13F portfolio of Situational Awareness LP in the fourth quarter of 2025
Back then, this stake comprised a little over 432,000 shares. Filings for the first quarter of 2026 show that the fund has made no changes to this stake. The firm designs, engineers, manufactures, markets, and sells engines and power systems in the United States, the rest of North America, the Pacific Rim, Europe, and internationally.
Earlier this month, the firm revealed that CEO Constantine Xykis had resigned and the board had appointed CFO Xun Li as interim CEO. As part of a larger bet on energy firms, Leopold Aschenbrenner is bullish on Power Solutions as well. Power Solutions International, Inc. (NASDAQ:PSIX) sits directly at the nexus of the global data center power crisis.