Ambac Financial Group (AMBC) Institutional Ownership $9.21 +0.09 (+0.98%) Closing price 03:59 PM EasternExtended Trading$8.97 -0.24 (-2.58%) As of 04:30 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share Ownership Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Institutional Ownership Changes (13F Filings) for Ambac Financial Group (NYSE:AMBC)CurrentInstitutional OwnershipPercentage84.49%Number ofInstitutional Buyers(last 12 months)100TotalInstitutional Inflows(last 12 months)$99.94MNumber ofInstitutional Sellers(last 12 months)52TotalInstitutional Outflows(last 12 months)$63.66M Get AMBC Insider Trade Alerts Want to know when executives and insiders are buying or selling Ambac Financial Group stock? 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Skip Chart & View Institutional Buying and Selling Data AMBC Institutional Buying and Selling by Quarter Ambac Financial Group Major Shareholders & Ownership History Export to ExcelReporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails8/15/2025 LM Asset IM Inc.6,000$43K0.0%N/A0.013% 8/15/2025 Gendell Jeffrey L1,198,420$8.51M0.2%+99.0%2.583% 8/15/2025 Engineers Gate Manager LP46,607$331K0.0%-64.0%0.100% 8/15/2025 BNP Paribas Financial Markets119,468$848K0.0%+467.1%0.257% 8/15/2025 Bridgeway Capital Management LLC317,249$2.25M0.1%+4.0%0.684% 8/15/2025 Brevan Howard Capital Management LP50,703$360K0.0%-31.8%0.109% 8/15/2025 Bank of America Corp DE166,265$1.18M0.0%-9.5%0.358% 8/15/2025 Ameriprise Financial Inc.164,805$1.17M0.0%+65.5%0.355% 8/14/2025 FJ Capital Management LLC24,677$175K0.0%N/A0.053% 8/14/2025 Immersion Corp300,000$2.13M1.1%N/A0.647% Get the Latest News and Ratings for AMBC and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Ambac Financial Group and its competitors with MarketBeat's FREE daily newsletter. 8/14/2025 The Manufacturers Life Insurance Company 17,993$128K0.0%+9.9%0.039% 8/14/2025 Sei Investments Co.23,565$167K0.0%-15.8%0.051% 8/14/2025 Nebula Research & Development LLC107,124$761K0.1%+46.5%0.231% 8/14/2025 Qube Research & Technologies Ltd37,584$267K0.0%N/A0.081% 8/14/2025 WINTON GROUP Ltd15,197$108K0.0%N/A0.033% 8/14/2025 Continental General Insurance Co.1,218,349$8.65M2.2%N/A2.626% 8/14/2025 Cerity Partners LLC11,851$84K0.0%N/A0.026% 8/14/2025 Federated Hermes Inc.5,231$37K0.0%N/A0.011% 8/13/2025 Marshall Wace LLP648,155$4.60M0.0%+215.5%1.397% 8/13/2025 Walleye Capital LLC38,094$270K0.0%-174.7%0.082% 8/13/2025 Invesco Ltd.170,436$1.21M0.0%-5.6%0.367% 8/13/2025 Quantbot Technologies LP18,834$134K0.0%-81.2%0.041% 8/13/2025 Third Avenue Management LLC603,391$4.28M0.9%+64.7%1.300% 8/13/2025 Aurelius Capital Management LP60,546$430K2.9%N/A0.130% 8/13/2025 Norges Bank75,000$532K0.0%N/A0.162% 8/13/2025 Hsbc Holdings PLC97,348$675K0.0%-54.8%0.210% 8/12/2025 XTX Topco Ltd38,524$274K0.0%-67.8%0.083% 8/12/2025 American Century Companies Inc.438,335$3.11M0.0%-48.8%0.945% 8/12/2025 Rhumbline Advisers74,916$532K0.0%+7.7%0.161% 8/12/2025 AXQ Capital LP35,439$252K0.1%+27.7%0.076% 8/12/2025 Legal & General Group Plc4,305$31K0.0%-90.1%0.009% 8/12/2025 JPMorgan Chase & Co.31,231$222K0.0%-50.8%0.067% 8/11/2025 Empirical Finance LLC72,182$512K0.0%N/A0.156% 8/8/2025 Intech Investment Management LLC41,388$294K0.0%+11.4%0.089% 8/8/2025 Creative Planning20,421$145K0.0%N/A0.044% 8/8/2025 Geode Capital Management LLC1,122,616$7.97M0.0%+2.5%2.418% 8/7/2025 Prescott Group Capital Management L.L.C.875,977$6.22M0.7%+98.0%1.887% 8/7/2025 Connor Clark & Lunn Investment Management Ltd.111,053$788K0.0%+256.0%0.239% 8/6/2025 Fox Run Management L.L.C.37,922$269K0.0%-16.0%0.082% 8/1/2025 Y Intercept Hong Kong Ltd350,701$2.49M0.1%+139.5%0.755% 7/30/2025 First Citizens Bank & Trust Co.43,210$307K0.0%+207.1%0.093% 7/29/2025 VELA Investment Management LLC122,770$872K0.2%+32.9%0.264% 7/25/2025 Envestnet Portfolio Solutions Inc.41,667$296K0.0%+232.6%0.090% 7/25/2025 CWM LLC3,962$28K0.0%+65,933.3%0.009% 6/27/2025 Goldman Sachs Group Inc.680,179$5.95M0.0%-42.6%1.465% 5/29/2025 Rhumbline Advisers69,540$608K0.0%-50.7%0.150% 5/16/2025 Empowered Funds LLC195,127$1.71M0.0%+7.4%0.382% 5/16/2025 Caxton Associates LLP65,647$574K0.0%N/A0.128% 5/16/2025 Goldman Sachs Group Inc.680,179$5.95M0.0%-42.6%1.331% 5/16/2025 Dynamic Technology Lab Private Ltd64,233$562K0.1%N/A0.126% 5/16/2025 Petrus Trust Company LTA19,432$170K0.0%N/A0.038% 5/16/2025 Millennium Management LLC508,686$4.45M0.0%+142.7%0.996% 5/15/2025 Cubist Systematic Strategies LLC170,643$1.49M0.0%+289.5%0.334% 5/15/2025 DRW Securities LLC10,800$94K0.0%N/A0.021% 5/15/2025 Magnetar Financial LLC27,188$238K0.0%N/A0.053% 5/15/2025 State of Wyoming14,758$129K0.0%+469.4%0.029% 5/15/2025 Trexquant Investment LP161,096$1.41M0.0%N/A0.315% 5/14/2025 Corebridge Financial Inc.22,301$195K0.0%-8.2%0.044% 5/14/2025 MetLife Investment Management LLC23,542$206K0.0%-12.3%0.046% 5/14/2025 Hotchkis & Wiley Capital Management LLC557,680$4.88M0.0%-33.4%1.092% 5/14/2025 AlphaQuest LLC6,947$61K0.0%N/A0.014% 5/14/2025 EntryPoint Capital LLC20,235$177K0.1%N/A0.040% 5/14/2025 Third Avenue Management LLC366,461$3.21M0.6%+59.0%0.717% 5/14/2025 Hsbc Holdings PLC215,435$1.88M0.0%-31.0%0.422% 5/14/2025 Quantbot Technologies LP100,308$878K0.0%+148.1%0.196% 5/13/2025 Algert Global LLC62,719$549K0.0%-29.1%0.123% 5/13/2025 American Century Companies Inc.856,261$7.49M0.0%-7.9%1.676% 5/13/2025 Fox Run Management L.L.C.45,171$395K0.1%+68.4%0.088% 5/13/2025 KLCM Advisors Inc.24,000$210K0.0%+71.4%0.047% 5/12/2025 Public Sector Pension Investment Board72,000$630K0.0%-62.3%0.141% 5/12/2025 Nuveen LLC282,657$2.47M0.0%N/A0.553% 5/12/2025 Invesco Ltd.180,495$1.58M0.0%-51.9%0.353% 5/12/2025 Connor Clark & Lunn Investment Management Ltd.31,199$273K0.0%-34.0%0.061% 5/12/2025 Swiss National Bank91,900$804K0.0%-1.5%0.180% 5/9/2025 Deutsche Bank AG723,250$6.33M0.0%+7.1%1.416% 5/9/2025 Charles Schwab Investment Management Inc.378,764$3.31M0.0%-25.0%0.741% 5/9/2025 Vanguard Group Inc.2,660,882$23.28M0.0%-17.3%5.208% 5/8/2025 XTX Topco Ltd119,607$1.05M0.1%+326.3%0.234% 5/7/2025 Prescott Group Capital Management L.L.C.442,364$3.87M0.6%+127.0%0.866% 5/6/2025 Royce & Associates LP66,122$579K0.0%-9.3%0.129% 5/6/2025 Y Intercept Hong Kong Ltd146,446$1.28M0.1%+277.0%0.287% 4/30/2025 Mraz Amerine & Associates Inc.19,550$169K0.0%+31.2%0.038% 4/29/2025 Bank of New York Mellon Corp144,073$1.26M0.0%-51.4%0.282% 4/29/2025 VELA Investment Management LLC92,412$809K0.3%+47.7%0.181% 4/21/2025 Envestnet Portfolio Solutions Inc.12,527$110K0.0%N/A0.025% 4/15/2025 SG Americas Securities LLC36,196$317K0.0%N/A0.078% 4/14/2025 First Citizens Bank & Trust Co.14,070$123K0.0%N/A0.030% 4/8/2025 Rhumbline Advisers69,540$608K0.0%-50.7%0.150% 4/7/2025 GAMMA Investing LLC4,463$39K0.0%+191.9%0.010% 3/18/2025 California State Teachers Retirement System44,277$560K0.0%+3.9%0.096% 2/17/2025 UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC194,034$2.46M0.0%+23.6%0.409% 2/17/2025 Western Standard LLC453,530$5.74M3.8%+64.3%0.956% 2/17/2025 Two Sigma Advisers LP21,100$267K0.0%N/A0.044% 2/17/2025 Two Sigma Investments LP132,295$1.67M0.0%+41.1%0.279% 2/17/2025 State of Wyoming2,592$33K0.0%-89.6%0.005% 2/17/2025 Point72 Asset Management L.P.7,300$92K0.0%N/A0.015% 2/17/2025 ProShare Advisors LLC13,756$174K0.0%N/A0.029% 2/17/2025Nuveen Asset Management LLC824,357$10.43M0.0%+65.5%1.738% 2/17/2025 Millennium Management LLC209,592$2.65M0.0%-24.0%0.442% 2/17/2025 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.25,807$326K0.0%+8.2%0.054% (Data available from 1/1/2016 forward) AMBC Institutional Ownership - Frequently Asked Questions Who are the largest shareholders of AMBC shares? During the previous two years, 163 institutional investors and hedge funds held shares of Ambac Financial Group. The most heavily invested institutionals were Dimensional Fund Advisors LP ($34.23M), Vanguard Group Inc. ($23.28M), FMR LLC ($19.42M), State Street Corp ($18.54M), Boussard & Gavaudan Investment Management LLP ($13.89M), Wolf Hill Capital Management LP ($12.65M), and Nuveen Asset Management LLC ($10.43M).Learn more on Ambac Financial Group's institutional investors. What percentage of Ambac Financial Group's stock is owned by institutional investors? 84.49% of Ambac Financial Group's stock is owned by institutional investors. Learn more on AMBC's institutional investor holdings. Which institutional investors have been buying Ambac Financial Group's stock? Of the 132 institutional investors that purchased Ambac Financial Group's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Continental General Insurance Co. ($1.22M), Wolf Hill Capital Management LP ($1.00M), Gendell Jeffrey L ($900.15K), Marshall Wace LLP ($718.96K), Prescott Group Capital Management L.L.C. ($681.08K), Portolan Capital Management LLC ($589.44K), and Western Standard LLC ($453.53K). How much institutional buying is happening at Ambac Financial Group? Institutional investors have bought a total of 10,537,197 shares in the last 24 months. This purchase volume represents approximately $99.94M in transactions. Which of Ambac Financial Group's major shareholders have been selling company stock? Of the 52 institutional investors that sold Ambac Financial Group's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Vanguard Group Inc. ($1.46M), Goldman Sachs Group Inc. ($1.01M), American Century Companies Inc. ($491.01K), Cubist Systematic Strategies LLC ($368.37K), Hotchkis & Wiley Capital Management LLC ($279.97K), Bank of New York Mellon Corp ($234.71K), and Hsbc Holdings PLC ($231.62K). How much institutional selling is happening at Ambac Financial Group? Institutional investors have sold a total of 6,316,941 shares in the last 24 months. This volume of shares sold represents approximately $63.66M in transactions. 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