Power Solutions International (PSIX) Institutional Ownership $86.99 -6.76 (-7.21%) As of 08/1/2025 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)40TotalInstitutional Inflows(last 12 months)$77.59MNumber ofInstitutional Sellers(last 12 months)4TotalInstitutional Outflows(last 12 months)$36.55M 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 CompanyDetails7/30/2025 D.A. Davidson & CO.11,680$755K0.0%+15.1%0.051% 7/28/2025 Mutual Advisors LLC3,612$234K0.0%N/A0.016% 7/28/2025 Ritholtz Wealth Management40,873$2.64M0.1%+2.6%0.178% 7/25/2025 Astoria Portfolio Advisors LLC.6,388$413K0.1%N/A0.028% 7/23/2025 Clear Creek Financial Management LLC12,811$829K0.1%N/A0.056% 7/23/2025 Gagnon Securities LLC341,611$22.10M4.5%-35.0%1.485% 7/23/2025 Gagnon Advisors LLC180,405$11.67M7.8%-44.2%0.784% 7/17/2025 Wolff Wiese Magana LLC400$26K0.0%N/A0.002% 7/16/2025 Kathmere Capital Management LLC3,499$226K0.0%N/A0.015% 7/16/2025 Perigon Wealth Management LLC4,979$322K0.0%N/A0.022% 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. 7/11/2025 Farther Finance Advisors LLC1,651$107K0.0%+88.0%0.007% 7/9/2025 Bay Rivers Group3,600$233K0.1%N/A0.016% 7/8/2025 GK Wealth Management LLC5,085$329K0.3%N/A0.022% 6/27/2025Goldman 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% 5/12/2025 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% 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% 4/28/2025 D.A. Davidson & CO.10,150$257K0.0%N/A0.044% 4/23/2025Spire 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% 2/17/2025Citadel 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% China just unlocked Nvidia’s AI chips—what that means for you (Ad)Tired of Missing Big AI Moves Like Nvidia? You’re not the problem—your trading system is. Tim’s XGPT system tracks breaking AI news and shows when to trade.📈 AI-backed. Beginner-friendly. Results proven.Watch the system in action.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% 2/4/2025 World 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% 1/24/2025 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, 40 institutional investors and hedge funds held shares of Power Solutions International. The most heavily invested institutionals were Gagnon Securities LLC ($22.10M), Gagnon Advisors LLC ($11.67M), Portolan Capital Management LLC ($10.15M), S Squared Technology LLC ($4.12M), Ritholtz Wealth Management ($2.64M), O Shaughnessy Asset Management LLC ($2.17M), and Marshall Wace LLP ($2.13M).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 40 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 2,607,872 shares in the last 24 months. This purchase volume represents approximately $77.59M 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 ($508.54K), Gagnon Advisors LLC ($289.76K), 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 936,694 shares in the last 24 months. This volume of shares sold represents approximately $36.55M in transactions. Related Companies ESAB Major Shareholders JBTM Major Shareholders ZWS Major Shareholders GTES Major Shareholders CHX Major Shareholders WFRD Major Shareholders WHD Major Shareholders HAYW Major Shareholders ATS Major Shareholders HSAI Major Shareholders This page (NASDAQ:PSIX) was last updated on 8/2/2025 by MarketBeat.com Staff From Our PartnersMan Who Called Nvidia at $1.10 Says Buy This Now...In 2004, one man called Nvidia before just about anyone knew it existed. 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