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 (Q4 2025). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Bain Capital Credit, Lp, Caption Management, Llc, Bracebridge Capital, Llc, Susquehanna International Group, Llp, and Russell Investments Group, Ltd..
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Vela Investment Management, Llc | Buy | +178,752 | — | 178,752 | $1.39M | Q4 2025 | Aug 27, 2026 |
| Advisors Asset Management, Inc. | Sell | -101 | -100.0% | 0 | $0.00 | Q4 2025 | Aug 26, 2026 |
| Hsbc Holdings Plc | Buy | +92,040 | — | 92,040 | $713.34K | Q4 2025 | Mar 06, 2026 |
| Virtu Financial Llc | Buy | +19,235 | — | 19,235 | $150.00K | Q4 2025 | Feb 23, 2026 |
| Bain Capital Credit, Lp | Buy | +1,108,012 | — | 1,108,012 | $8.62M | Q4 2025 | Feb 17, 2026 |
| Caption Management, Llc | Buy | +1,071,094 | — | 1,071,094 | $8.33M | Q4 2025 | Feb 17, 2026 |
| Bracebridge Capital, Llc | Buy | +579,234 | — | 579,234 | $4.51M | Q4 2025 | Feb 17, 2026 |
| Susquehanna International Group, Llp | Buy | +526,588 | — | 526,588 | $4.10M | Q4 2025 | Feb 17, 2026 |
| Russell Investments Group, Ltd. | Buy | +346,258 | — | 346,258 | $2.69M | Q4 2025 | Feb 17, 2026 |
| Bank Of America Corp | Buy | +330,901 | — | 330,901 | $2.57M | Q4 2025 | Feb 17, 2026 |
| Northern Trust Corp | Buy | +323,146 | — | 323,146 | $2.51M | Q4 2025 | Feb 17, 2026 |
| Millennium Management Llc | Buy | +303,282 | — | 303,282 | $2.36M | Q4 2025 | Feb 17, 2026 |
| Citadel Advisors Llc | Buy | +287,283 | — | 287,283 | $2.24M | Q4 2025 | Feb 17, 2026 |
| Bridgeway Capital Management, Llc | Buy | +245,387 | — | 245,387 | $1.91M | Q4 2025 | Feb 17, 2026 |
| Schonfeld Strategic Advisors Llc | Buy | +169,824 | — | 169,824 | $1.32M | Q4 2025 | Feb 17, 2026 |
| Exoduspoint Capital Management, Lp | Buy | +109,765 | — | 109,765 | $853.97K | Q4 2025 | Feb 17, 2026 |
| Point72 Asset Management, L.P. | Buy | +103,544 | — | 103,544 | $805.57K | Q4 2025 | Feb 17, 2026 |
| Jump Financial, Llc | Buy | +85,213 | — | 85,213 | $662.96K | Q4 2025 | Feb 17, 2026 |
| Engineers Gate Manager Lp | Buy | +81,585 | — | 81,585 | $634.73K | Q4 2025 | Feb 17, 2026 |
| Quantinno Capital Management Lp | Buy | +78,678 | — | 78,678 | $612.12K | Q4 2025 | Feb 17, 2026 |
| Price T Rowe Associates Inc | Buy | +70,941 | — | 70,941 | $552.00K | Q4 2025 | Feb 17, 2026 |
| Aqr Capital Management Llc | Buy | +70,128 | — | 70,128 | $545.60K | Q4 2025 | Feb 17, 2026 |
| Creative Planning | Buy | +68,537 | — | 68,537 | $533.22K | Q4 2025 | Feb 17, 2026 |
| Two Sigma Investments, Lp | Buy | +45,044 | — | 45,044 | $350.44K | Q4 2025 | Feb 17, 2026 |
| D. E. Shaw & Co., Inc. | Buy | +44,126 | — | 44,126 | $343.30K | Q4 2025 | Feb 17, 2026 |
| Balyasny Asset Management L.P. | Buy | +42,917 | — | 42,917 | $333.89K | Q4 2025 | Feb 17, 2026 |
| Alliancebernstein L.P. | Buy | +37,530 | — | 37,530 | $291.98K | Q4 2025 | Feb 17, 2026 |
| Xtx Topco Ltd | Buy | +31,058 | — | 31,058 | $241.63K | Q4 2025 | Feb 17, 2026 |
| Aquatic Capital Management Llc | Buy | +23,067 | — | 23,067 | $179.46K | Q4 2025 | Feb 17, 2026 |
| Quadrature Capital Ltd | Buy | +21,219 | — | 21,219 | $165.08K | Q4 2025 | Feb 17, 2026 |
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.
Related AMBC Institutional Insights
- AMBC Overview
- AMBC 13F Institutional Holders
- AMBC Superinvestors
- Financial Services Sector Institutional Ownership
- Financial Services Sector Portfolio Overlap
- Institutional Portfolio Overlap & Shared Holdings
- Most Bought Financial Services Stocks By Institutional Investors
- Most Sold Financial Services Stocks By Institutional Investors
- AMBC Insider Trading & SEC Form 4 Activity
- AMBC Articles
- Top Institutional Investor Stock Rankings