Power Solutions International (PSIX) Institutional Ownership $78.10 +7.83 (+11.14%) As of 07/3/2025 01:00 PM Eastern Add Compare Share Share Ownership Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOwnershipSEC FilingsTrendsBuy This Stock Institutional Ownership Changes (13F Filings) for Power Solutions International (NASDAQ:PSIX)CurrentInstitutional OwnershipPercentage22.28%Number ofInstitutional Buyers(last 12 months)32TotalInstitutional Inflows(last 12 months)$74.77MNumber ofInstitutional Sellers(last 12 months)4TotalInstitutional Outflows(last 12 months)$15.42M Get PSIX Insider Trade Alerts Want to know when executives and insiders are buying or selling Power Solutions International stock? Sign up for InsiderTrades.com's daily newsletter to get the latest insider transactions delivered to your inbox daily. Email Address Skip Chart & View Institutional Buying and Selling Data PSIX Institutional Buying and Selling by Quarter Power Solutions International Major Shareholders & Ownership History Export to ExcelReporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails6/27/2025Goldman Sachs Group Inc.24,717$625K0.0%N/A0.107% 5/21/2025Acadian Asset Management LLC4,469$112K0.0%N/A0.019% 5/16/2025S Squared Technology LLC163,034$4.12M2.1%-44.4%0.709% 5/16/2025Goldman Sachs Group Inc.24,717$625K0.0%N/A0.107% 5/15/2025Corsair Capital Management L.P.36,767$929K0.2%+129.8%0.160% 5/15/2025OMERS ADMINISTRATION Corp8,800$222K0.0%N/A0.038% 5/14/2025EntryPoint Capital LLC8,119$205K0.1%N/A0.035% 5/12/2025Independent Advisor Alliance42,940$1.09M0.0%N/A0.187% 5/12/2025Virtu Financial LLC14,864$376K0.0%N/A0.065% 5/12/2025Gagnon Advisors LLC323,484$8.18M5.8%-31.2%1.406% Get the Latest News and Ratings for PSIX and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Power Solutions International and its competitors with MarketBeat's FREE daily newsletter. 5/9/2025Gagnon Securities LLC525,291$13.28M2.9%-38.2%2.283% 5/9/2025Charles Schwab Investment Management Inc.30,945$782K0.0%N/A0.134% 5/9/2025Thoroughbred Financial Services LLC21,783$550K0.0%+108.8%0.095% 5/8/2025Vestcor Inc1,137$29K0.0%N/A0.005% 5/6/2025Navellier & Associates Inc.39,666$1.10M0.2%N/A0.172% 5/6/2025Cetera Investment Advisers20,403$516K0.0%N/A0.089% 5/6/2025Burney Co.33,890$857K0.0%N/A0.147% 4/28/2025D.A. Davidson & CO.10,150$257K0.0%N/A0.044% 4/23/2025Spire Wealth Management5,984$151K0.0%+84.5%0.026% 4/22/2025World Equity Group Inc.9,395$238K0.1%-47.2%0.041% 4/17/2025Ritholtz Wealth Management39,855$1.01M0.0%N/A0.173% 2/25/2025Heck Capital Advisors LLC3,150$94K0.0%N/A0.014% 2/17/2025Citadel Advisors LLC12,312$366K0.0%N/A0.054% 2/14/2025Manatuck Hill Partners LLC20,850$620K0.3%N/A0.091% 2/14/2025Schonfeld Strategic Advisors LLC15,300$455K0.0%N/A0.067% 2/13/2025S Squared Technology LLC293,034$8.72M3.6%N/A1.274% 2/13/2025Marshall Wace LLP71,588$2.13M0.0%N/A0.311% 2/13/2025Portolan Capital Management LLC341,287$10.15M0.7%N/A1.484% 2/13/2025Wells Fargo & Company MN1,100$33K0.0%N/A0.005% 2/12/2025Thoroughbred Financial Services LLC10,433$310K0.0%N/A0.045% 2/12/2025Perritt Capital Management Inc15,000$446K0.2%N/A0.065% 2/12/2025O Shaughnessy Asset Management LLC72,868$2.17M0.0%N/A0.317% 2/4/2025World Equity Group Inc.17,794$529K0.1%N/A0.077% 2/3/2025Thompson Davis & CO. Inc.8,450$251K0.2%N/A0.037% 1/24/2025Spire Wealth Management3,243$96K0.0%N/A0.014% 1/24/2025Gagnon Advisors LLC470,165$13.99M9.0%N/A2.044% 1/24/2025Gagnon Securities LLC850,146$25.29M5.1%N/A3.696% 1/23/2025Heck Capital Advisors LLC3,150$94K0.0%N/A0.014% 1/23/2025Evernest Financial Advisors LLC7,500$223K0.1%N/A0.033% 1/15/2025Astoria Portfolio Advisors LLC.7,277$216K0.1%N/A0.032% INVESTOR ALERT: Tiny “$3 AI Wonder Stock” on the Verge of Blasting Off (Ad)Right now, we’re witnessing a monumental shift in the world.Our No. 1 AI Pick is currently trading for pennies on the dollar compared to Nividia.(Data available from 1/1/2016 forward) PSIX Institutional Ownership - Frequently Asked Questions Who are the largest shareholders of PSIX shares? During the previous two years, 32 institutional investors and hedge funds held shares of Power Solutions International. The most heavily invested institutionals were Gagnon Securities LLC ($13.28M), Portolan Capital Management LLC ($10.15M), Gagnon Advisors LLC ($8.18M), S Squared Technology LLC ($4.12M), O Shaughnessy Asset Management LLC ($2.17M), Marshall Wace LLP ($2.13M), and Navellier & Associates Inc. ($1.10M).Learn more on Power Solutions International's institutional investors. What percentage of Power Solutions International's stock is owned by institutional investors? 22.28% of Power Solutions International's stock is owned by institutional investors. Learn more on PSIX's institutional investor holdings. Which institutional investors have been buying Power Solutions International's stock? Of the 32 institutional investors that purchased Power Solutions International's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Gagnon Securities LLC ($850.15K), Gagnon Advisors LLC ($470.17K), Portolan Capital Management LLC ($341.29K), S Squared Technology LLC ($293.03K), O Shaughnessy Asset Management LLC ($72.87K), Marshall Wace LLP ($71.59K), and Goldman Sachs Group Inc. ($49.43K). How much institutional buying is happening at Power Solutions International? Institutional investors have bought a total of 2,564,177 shares in the last 24 months. This purchase volume represents approximately $74.77M in transactions. Which of Power Solutions International's major shareholders have been selling company stock? The following institutional investors have sold Power Solutions International stock in the last 24 months: Gagnon Securities LLC ($324.86K), Gagnon Advisors LLC ($146.68K), S Squared Technology LLC ($130K), and World Equity Group Inc. ($8.40K). How much institutional selling is happening at Power Solutions International? Institutional investors have sold a total of 609,935 shares in the last 24 months. This volume of shares sold represents approximately $15.42M in transactions. Related Companies CHX Major Shareholders WFRD Major Shareholders WHD Major Shareholders ATS Major Shareholders HAYW Major Shareholders HSAI Major Shareholders EPAC Major Shareholders SEI Major Shareholders FLOC Major Shareholders ACMR Major Shareholders This page (NASDAQ:PSIX) was last updated on 7/4/2025 by MarketBeat.com Staff From Our PartnersWhite House to reset Social Security?Elon Musk's parting DOGE gift looks set to shock America... 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