Power Solutions International (PSIX) Institutional Ownership $90.47 -4.98 (-5.22%) As of 08/13/2025 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)63TotalInstitutional Inflows(last 12 months)$96.27MNumber ofInstitutional Sellers(last 12 months)6TotalInstitutional Outflows(last 12 months)$45.35M 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 CompanyDetails8/13/2025Jump Financial LLC16,900$1.09M0.0%N/A0.073% 8/13/2025Invesco Ltd.3,968$257K0.0%N/A0.017% 8/13/2025Twin Peaks Wealth Advisors LLC800$52K0.0%N/A0.003% 8/13/2025Arrowstreet Capital Limited Partnership73,202$4.74M0.0%N/A0.318% 8/13/2025Quantbot Technologies LP3,727$241K0.0%N/A0.016% 8/13/2025OMERS ADMINISTRATION Corp11,800$763K0.0%+34.1%0.051% 8/13/2025New York State Common Retirement Fund2,100$136K0.0%N/A0.009% 8/13/2025Corsair Capital Management L.P.25,635$1.66M0.3%-30.3%0.111% 8/13/2025Russell Investments Group Ltd.14,121$913K0.0%N/A0.061% 8/12/2025 CreativeOne Wealth LLC6,548$424K0.0%N/A0.028% 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. 8/12/2025 Ameritas Investment Partners Inc.669$43K0.0%N/A0.003% 8/12/2025 Cozad Asset Management Inc.5,131$332K0.0%N/A0.022% 8/12/2025 Rhumbline Advisers9,435$610K0.0%N/A0.041% 8/12/2025 Legal & General Group Plc5,585$361K0.0%N/A0.024% 8/12/2025 JPMorgan Chase & Co.3,097$200K0.0%+36.1%0.013% 8/12/2025 Entropy Technologies LP3,500$226K0.0%N/A0.015% 8/8/2025 Intech Investment Management LLC3,345$216K0.0%N/A0.015% 8/8/2025 Cetera Investment Advisers21,978$1.42M0.0%+7.7%0.096% 8/8/2025 Thoroughbred Financial Services LLC23,801$1.54M0.1%+9.3%0.103% 8/8/2025 Creative Planning10,623$687K0.0%N/A0.046% 8/8/2025 Thompson Davis & CO. Inc.22,050$1.43M0.6%N/A0.096% 8/8/2025 D Orazio & Associates Inc.4,868$315K0.0%N/A0.021% 8/8/2025 Police & Firemen s Retirement System of New Jersey1,416$92K0.0%N/A0.006% 8/8/2025 Geode Capital Management LLC154,383$9.99M0.0%+102.2%0.671% 8/7/2025 S Squared Technology LLC39,574$2.56M1.1%-75.7%0.172% 8/7/2025 Rathbones Group PLC3,695$239K0.0%N/A0.016% 8/5/2025 Burney Co.39,138$2.53M0.1%+15.5%0.170% 8/5/2025 Aviance Capital Partners LLC3,760$243K0.0%N/A0.016% 8/4/2025 Creative Financial Designs Inc. ADV1,980$128K0.0%+890.0%0.009% 8/4/2025 MeadowBrook Investment Advisors LLC820$53K0.0%N/A0.004% 8/4/2025 Spire Wealth Management4,511$292K0.0%-24.6%0.020% 7/30/2025 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% Trump’s national nightmare is here (Ad)Porter Stansberry and Jeff Brown say a new U.S. national emergency is already underway — and it could trigger the biggest forced rotation of capital since World War II. They reveal why Trump is mobilizing America’s tech giants… and name the two stocks most likely to soar as trillions shift behind the scenes.Watch the National Emergency broadcast here7/16/2025 Perigon Wealth Management LLC4,979$322K0.0%N/A0.022% 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% 5/21/2025 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% 5/16/2025Goldman 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% 5/14/2025 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% 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% 2/17/2025Citadel 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% 2/13/2025 S 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% 2/12/2025 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, 63 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), Geode Capital Management LLC ($9.99M), Arrowstreet Capital Limited Partnership ($4.74M), Ritholtz Wealth Management ($2.64M), and S Squared Technology LLC ($2.56M).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 63 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), Geode Capital Management LLC ($78.03K), Arrowstreet Capital Limited Partnership ($73.20K), and O Shaughnessy Asset Management LLC ($72.87K). How much institutional buying is happening at Power Solutions International? Institutional investors have bought a total of 2,896,611 shares in the last 24 months. This purchase volume represents approximately $96.27M 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 ($253.46K), Corsair Capital Management L.P. ($11.13K), World Equity Group Inc. ($8.40K), and Spire Wealth Management ($1.47K). How much institutional selling is happening at Power Solutions International? Institutional investors have sold a total of 1,072,759 shares in the last 24 months. This volume of shares sold represents approximately $45.35M in transactions. 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