Power Solutions International (PSIX) Institutional Ownership $38.71 +0.93 (+2.46%) As of 04:00 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)$74.14MNumber 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 CompanyDetails5/21/2025 Acadian Asset Management LLC4,469$112K0.0%N/A0.019% 5/16/2025 S Squared Technology LLC163,034$4.12M2.1%-44.4%0.709% 5/16/2025 Goldman Sachs Group Inc.24,717$625K0.0%N/A0.107% 5/15/2025 Corsair Capital Management L.P.36,767$929K0.2%+129.8%0.160% 5/15/2025 OMERS ADMINISTRATION Corp8,800$222K0.0%N/A0.038% 5/14/2025 EntryPoint Capital LLC8,119$205K0.1%N/A0.035% 5/12/2025 Independent Advisor Alliance42,940$1.09M0.0%N/A0.187% 5/12/2025 Virtu Financial LLC14,864$376K0.0%N/A0.065% 5/12/2025 Gagnon Advisors LLC323,484$8.18M5.8%-31.2%1.406% 5/9/2025 Gagnon Securities LLC525,291$13.28M2.9%-38.2%2.283% 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. 5/9/2025 Charles Schwab Investment Management Inc.30,945$782K0.0%N/A0.134% 5/9/2025 Thoroughbred Financial Services LLC21,783$550K0.0%+108.8%0.095% 5/8/2025 Vestcor Inc1,137$29K0.0%N/A0.005% 5/6/2025 Navellier & Associates Inc.39,666$1.10M0.2%N/A0.172% 5/6/2025 Cetera Investment Advisers20,403$516K0.0%N/A0.089% 5/6/2025 Burney Co.33,890$857K0.0%N/A0.147% 4/28/2025 D.A. Davidson & CO.10,150$257K0.0%N/A0.044% 4/23/2025 Spire Wealth Management5,984$151K0.0%+84.5%0.026% 4/22/2025 World Equity Group Inc.9,395$238K0.1%-47.2%0.041% 4/17/2025 Ritholtz Wealth Management39,855$1.01M0.0%N/A0.173% 2/25/2025 Heck Capital Advisors LLC3,150$94K0.0%N/A0.014% 2/17/2025 Citadel Advisors LLC12,312$366K0.0%N/A0.054% 2/14/2025 Manatuck Hill Partners LLC20,850$620K0.3%N/A0.091% 2/14/2025 Schonfeld Strategic Advisors LLC15,300$455K0.0%N/A0.067% 2/13/2025 S Squared Technology LLC293,034$8.72M3.6%N/A1.274% 2/13/2025 Marshall Wace LLP71,588$2.13M0.0%N/A0.311% 2/13/2025 Portolan Capital Management LLC341,287$10.15M0.7%N/A1.484% 2/13/2025 Wells Fargo & Company MN1,100$33K0.0%N/A0.005% 2/12/2025 Thoroughbred Financial Services LLC10,433$310K0.0%N/A0.045% 2/12/2025 Perritt Capital Management Inc15,000$446K0.2%N/A0.065% 2/12/2025 O Shaughnessy Asset Management LLC72,868$2.17M0.0%N/A0.317% 2/4/2025 World Equity Group Inc.17,794$529K0.1%N/A0.077% 2/3/2025 Thompson Davis & CO. Inc.8,450$251K0.2%N/A0.037% 1/24/2025 Spire Wealth Management3,243$96K0.0%N/A0.014% 1/24/2025 Gagnon Advisors LLC470,165$13.99M9.0%N/A2.044% 1/24/2025 Gagnon Securities LLC850,146$25.29M5.1%N/A3.696% 1/23/2025 Heck Capital Advisors LLC3,150$94K0.0%N/A0.014% 1/23/2025 Evernest Financial Advisors LLC7,500$223K0.1%N/A0.033% 1/15/2025 Astoria Portfolio Advisors LLC.7,277$216K0.1%N/A0.032% (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 PSIX's institutional investors. What percentage of Power Solutions International stock is owned by institutional investors? 22.28% of Power Solutions International stock is owned by institutional investors. Learn more on PSIX's institutional investor holdings. Which institutional investors have been buying Power Solutions International stock? Of the 32 institutional investors that purchased Power Solutions International 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 Independent Advisor Alliance ($42.94K). How much institutional buying is happening at Power Solutions International? Institutional investors have bought a total of 2,539,460 shares in the last 24 months. This purchase volume represents approximately $74.14M in transactions. Which Power Solutions International 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 HAYW Major Shareholders ATS Major Shareholders EPAC Major Shareholders HSAI Major Shareholders FLOC Major Shareholders DNOW Major Shareholders SEI Major Shareholders ACMR Major Shareholders CRCT Major Shareholders AZTA Major Shareholders This page (NASDAQ:PSIX) was last updated on 5/23/2025 by MarketBeat.com Staff From Our PartnersMarket Panic: Trump Just Dropped a Bomb on Your Stockstock Market Panic: Trump Just Dropped a Bomb on Your Stocks The market is in freefall—and Trump's new tarif...American Alternative | SponsoredWhite House to reset Social Security?Elon Musk's parting DOGE gift looks set to shock America... A single announcement by July 22nd could soon b...Altimetry | SponsoredBuffett’s favorite chart just hit 209% – here’s what that means for goldA Historic Gold Announcement Is About to Rock Wall Street For months, sharp-eyed analysts have watched the ...Golden Portfolio | SponsoredEveryone’s watching Nvidia right now. 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