AMBAC FINANCIAL GROUP INC (AMBC) Institutional Ownership Changes & 13F Activity

AMBAC FINANCIAL GROUP INC (AMBC). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Gendell Jeffrey L, Jane Street Group, Llc, Ayal Capital Advisors Ltd, Susquehanna International Group, Llp, and Jacobs Levy Equity Management, Inc.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
Manufacturers Life Insurance Company, TheBuy+1,582+14.6%12,414$77.46KQ2 2026Sep 09, 2026
Citadel Advisors LlcSell-9,032-2.1%422,777$2.64MQ2 2026Sep 02, 2026
Corient Private Wealth LlcBuy+12,27012,270$76.56KQ2 2026Aug 27, 2026
California State Teachers Retirement SystemSell-1,687-75.5%546$3.41KQ2 2026Aug 24, 2026
Mercer Global Advisors IncBuy+15,784+116.9%29,288$182.76KQ2 2026Aug 19, 2026
Riho Partners, LlcBuy+8,249+1.5%554,818$3.46MQ2 2026Aug 18, 2026
Empowered Funds, LlcSell-60,000-52.6%54,004$336.99KQ2 2026Aug 17, 2026
Public Employees Retirement System Of OhioSell-7,500-10.9%61,305$382.54KQ2 2026Aug 17, 2026
Transamerica Financial Advisors, LlcBuy+139+1263.6%150$936.00Q2 2026Aug 17, 2026
Gendell Jeffrey LSell-919,120-65.0%494,092$3.08MQ2 2026Aug 14, 2026
Jane Street Group, LlcSell-485,653-63.5%278,731$1.74MQ2 2026Aug 14, 2026
Ayal Capital Advisors LtdBuy+280,000280,000$1.75MQ2 2026Aug 14, 2026
Susquehanna International Group, LlpSell-253,501-65.0%136,692$852.96KQ2 2026Aug 14, 2026
Jacobs Levy Equity Management, IncSell-234,742-26.5%649,530$4.05MQ2 2026Aug 14, 2026
Caption Management, LlcSell-223,461-34.8%419,136$2.62MQ2 2026Aug 14, 2026
Goldman Sachs Group IncBuy+214,463+61.9%560,756$3.50MQ2 2026Aug 14, 2026
Raymond James Financial IncBuy+214,024+834.2%239,680$1.50MQ2 2026Aug 14, 2026
Aqr Capital Management LlcBuy+180,062+361.4%229,890$1.43MQ2 2026Aug 14, 2026
Invesco Ltd.Buy+127,868127,868$797.90KQ2 2026Aug 14, 2026
Bank Of America CorpSell-124,750-48.7%131,360$819.69KQ2 2026Aug 14, 2026
Diametric Capital, LpBuy+118,364118,364$738.59KQ2 2026Aug 14, 2026
Millennium Management LlcSell-115,478-85.5%19,610$122.37KQ2 2026Aug 14, 2026
Xtx Topco LtdSell-98,254-84.0%18,657$116.42KQ2 2026Aug 14, 2026
Charles Schwab Investment Management IncBuy+82,525+27.9%377,869$2.36MQ2 2026Aug 14, 2026
Engineers Gate Manager LpSell-74,916-74.6%25,500$159.12KQ2 2026Aug 14, 2026
Man Group PlcBuy+66,57966,579$415.45KQ2 2026Aug 14, 2026
Wells Fargo & Company/MnBuy+61,383+111.0%116,707$728.25KQ2 2026Aug 14, 2026
Bridgeway Capital Management, LlcSell-60,000-32.9%122,504$764.42KQ2 2026Aug 14, 2026
Ameriprise Financial IncBuy+58,50458,504$365.06KQ2 2026Aug 14, 2026
Fj Capital Management LlcBuy+57,93757,937$361.53KQ2 2026Aug 14, 2026
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Frequently asked questions about AMBC activity

  • Which institutional owners are buying AMBC?

    Institutional owners buying AMBC include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in AMBC activity?

    "Buy" means an investor increased their reported position in AMBC compared to the prior reporting period. This reflects growing exposure to AMBAC FINANCIAL GROUP INC (AMBC) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in AMBC increasing?

    Institutional interest in AMBC can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.