Who owns Ambac Finl?
- Ticker: OSG
- CUSIP Number: 023139884
Tip: Access positions for across all investors
Analyze quarterly positions in Ambac Finl with up to 7 years of data, all consolidated into one spreadsheet
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Top investors of Ambac Finl stock
Who bought or sold Ambac Finl this quarter?
| Fund or Company Name | Shares Held | Valued At | Change in Shares | As Of | Actions |
|---|---|---|---|---|---|
| BlackRock | 3.9M | $18M | -13% | Mar 2026 |
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| Vanguard Group | 2.5M | $20M | -2% | Dec 2025 |
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| Caption Management | 2.4M | $19M | 11% | Dec 2025 |
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| Western Standard | 2.2M | $11M | -10% | Mar 2026 |
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| Vanguard Capital Management | 1.9M | $9.0M | 100% | Mar 2026 |
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| Wolf Hill Capital Management | 1.9M | $15M | 63% | Dec 2025 |
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| Prescott Group Capital Management | 1.6M | $7.4M | 78% | Mar 2026 |
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| Jeffrey L. Gendell | 1.4M | $6.6M | -10% | Mar 2026 |
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| Third Avenue Management | 1.3M | $6.2M | 71% | Mar 2026 |
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| Dimensional Fund Advisors | 1.3M | $6.1M | -22% | Mar 2026 |
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| Sankaty Advisors | 1.1M | $5.2M | 0% | Mar 2026 |
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| Geode Capital Management | 1.0M | $4.8M | 0% | Mar 2026 |
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| State Street Corporation | 943k | $7.3M | -2% | Dec 2025 |
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| Jacobs Levy Equity Management | 884k | $4.1M | 273% | Mar 2026 |
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| Nuveen | 800k | $3.7M | -1% | Mar 2026 |
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| Jane Street | 781k | $3.6M | -68% | Mar 2026 |
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| Marshall Wace | 749k | $5.8M | 64% | Dec 2025 |
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| Susquehanna International | 714k | $5.6M | -41% | Dec 2025 |
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| Barclays | 680k | $5.3M | 2% | Dec 2025 |
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| Bracebridge Capital | 579k | $4.5M | 0% | Dec 2025 |
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| RIHO Partners | 547k | $2.5M | 100% | Mar 2026 |
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| Citadel Advisors | 541k | $2.5M | -68% | Mar 2026 |
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| Essex Investment Management | 418k | $1.9M | 2% | Mar 2026 |
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| Charles Schwab Investment Management | 361k | $2.8M | -6% | Dec 2025 |
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| Goldman Sachs Group | 346k | $1.6M | -56% | Mar 2026 |
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| IPG Investment Advisors | 326k | $1.5M | 100% | Mar 2026 |
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| Skopos Labs | 325k | $1.5M | 100% | Mar 2026 |
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| Northern Trust | 323k | $2.5M | -11% | Dec 2025 |
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| Vanguard Portfolio Management | 296k | $1.4M | 100% | Mar 2026 |
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| Vanguard Fiduciary Trust | 275k | $1.3M | 100% | Mar 2026 |
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| UBS Group | 264k | $1.2M | 72% | Mar 2026 |
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| Bank of America Corporation | 256k | $1.2M | 100% | Mar 2026 |
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| Bridgeway Capital Management | 245k | $1.9M | -23% | Dec 2025 |
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| Morgan Stanley | 235k | $1.1M | -75% | Mar 2026 |
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| Harbor Advisors | 196k | $913k | 0% | Mar 2026 |
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| Russell Investments | 181k | $843k | -48% | Mar 2026 |
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| Tudor Investment Corporation | 160k | $744k | 70% | Mar 2026 |
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| Sei Investments | 156k | $728k | 134% | Mar 2026 |
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| Invesco | 151k | $702k | -3% | Mar 2026 |
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| Connor, Clark & Lunn Investment Management | 144k | $671k | 110% | Mar 2026 |
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| Arrowpoint Investment Partners | 139k | $647k | -31% | Mar 2026 |
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| Millennium Management | 135k | $628k | -55% | Mar 2026 |
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| Legato Capital Management | 131k | $608k | -1% | Mar 2026 |
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| Bank of New York Mellon | 131k | $607k | -6% | Mar 2026 |
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| American Century Companies | 124k | $962k | -7% | Dec 2025 |
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| Ameriprise Financial | 115k | $535k | 100% | Mar 2026 |
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| Point72 Asset Management | 114k | $529k | 10% | Mar 2026 |
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| Cruiser Capital Advisors | 107k | $834k | -4% | Dec 2025 |
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| Hsbc Holdings | 102k | $476k | 11% | Mar 2026 |
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| Jump Financial | 85k | $663k | 100% | Dec 2025 |
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| Engineers Gate Manager | 82k | $635k | 100% | Dec 2025 |
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| Squarepoint Ops | 77k | $358k | 100% | Mar 2026 |
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| Prudential Financial | 70k | $326k | 29% | Mar 2026 |
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| Walleye Trading Advisors | 67k | $312k | -52% | Mar 2026 |
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| Caxton Associates | 66k | $511k | 0% | Dec 2025 |
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| Wells Fargo & Company | 55k | $257k | -35% | Mar 2026 |
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| Rhumbline Advisers | 54k | $249k | -7% | Mar 2026 |
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| Hrt Financial | 51k | $237k | -54% | Mar 2026 |
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| AQR Capital Management | 50k | $232k | -29% | Mar 2026 |
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| Quantinno Capital Management | 49k | $227k | -38% | Mar 2026 |
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| Acadian Asset Management | 43k | $199k | 86% | Mar 2026 |
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| Quantbot Technologies | 39k | $180k | 101% | Mar 2026 |
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| Alliancebernstein | 38k | $292k | 0% | Mar 2026 |
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| XTX Topco | 31k | $242k | 100% | Dec 2025 |
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| Deutsche Bank Aktiengesellschaft | 31k | $142k | 19% | Mar 2026 |
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| Lazard Asset Management | 29k | $136k | 100% | Mar 2026 |
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| Commonwealth Financial Services | 29k | $135k | 100% | Mar 2026 |
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| State of Wyoming | 29k | $134k | 50% | Mar 2026 |
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| Oxford Asset Management | 25k | $198k | 100% | Dec 2025 |
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| Renaissance Technologies | 25k | $196k | -72% | Dec 2025 |
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| Kitzinger Lautmann Capital Management | 24k | $111k | 0% | Mar 2026 |
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| CIBC Global Asset Management | 24k | $111k | 0% | Mar 2026 |
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| Empirical Asset Management | 23k | $109k | 100% | Mar 2026 |
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| Mraz, Amerine & Associates | 22k | $100k | 13% | Mar 2026 |
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| Gator Capital Management | 21k | $100k | 100% | Mar 2026 |
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| Park Capital Management, LLC / WI | 21k | $99k | 100% | Mar 2026 |
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| Quadrature Capital | 21k | $165k | 100% | Dec 2025 |
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| MetLife Investment Advisors | 20k | $155k | 9% | Dec 2025 |
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| Virtu Financial | 19k | $150k | 100% | Dec 2025 |
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| SG Americas Securities | 19k | $87k | -95% | Mar 2026 |
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| Vanguard Global Advisers | 19k | $87k | 100% | Mar 2026 |
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| Mirae Asset Global Etfs Holdings | 18k | $85k | -5% | Mar 2026 |
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| Brevan Howard Capital Management | 18k | $85k | -13% | Mar 2026 |
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| Verition Fund Management | 18k | $136k | -15% | Dec 2025 |
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| Quotient Wealth Partners | 17k | $79k | 100% | Mar 2026 |
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| Anchyra Partners | 16k | $76k | 100% | Mar 2026 |
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| Centiva Capital | 16k | $75k | 100% | Mar 2026 |
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| Axq Capital | 15k | $72k | -62% | Mar 2026 |
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| Able Wealth Management | 15k | $71k | 100% | Mar 2026 |
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| Quarry | 15k | $118k | -81% | Dec 2025 |
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| Daymark Wealth Partners | 15k | $68k | 100% | Mar 2026 |
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| Metis Global Partners | 14k | $67k | -43% | Mar 2026 |
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| Mercer Global Advisors | 14k | $63k | 100% | Mar 2026 |
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| Aire Advisors | 13k | $63k | 100% | Mar 2026 |
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| Graham Capital Management | 13k | $61k | 100% | Mar 2026 |
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| D. E. Shaw & Co | 13k | $60k | -71% | Mar 2026 |
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| Florida State Board of Administration | 13k | $59k | 0% | Mar 2026 |
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| Citigroup | 12k | $57k | 100% | Mar 2026 |
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| Group One Trading | 12k | $56k | 100% | Mar 2026 |
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| Police & Firemen's Retirement System of New Jersey | 12k | $55k | 0% | Mar 2026 |
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| Crown Wealth Group | 11k | $52k | 0% | Mar 2026 |
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| Symmetry Partner | 11k | $51k | 100% | Mar 2026 |
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| IMC-Chicago | 11k | $51k | -59% | Mar 2026 |
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| Manufacturers Life Insurance Company | 11k | $50k | -14% | Mar 2026 |
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| Springbok Capital Management | 11k | $83k | -40% | Dec 2025 |
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| Franklin Resources | 11k | $49k | -11% | Mar 2026 |
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| Simplex Trading | 11k | $83k | -49% | Dec 2025 |
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| United Capital Financial Advisers | 10k | $48k | 100% | Mar 2026 |
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| New York State Common Retirement Fund | 10k | $47k | 0% | Mar 2026 |
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| Bnp Paribas Arbitrage, Snc | 8.3k | $39k | -90% | Mar 2026 |
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| Kemnay Advisory Services | 8.1k | $63k | 100% | Dec 2025 |
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| Parallel Advisors | 6.5k | $30k | 4187% | Mar 2026 |
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| CWM | 5.6k | $44k | -20% | Dec 2025 |
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| Federated Investors | 4.4k | $21k | 0% | Mar 2026 |
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| Farther Finance Advisors | 3.9k | $18k | 3057% | Mar 2026 |
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| Legal & General Group | 3.8k | $18k | 0% | Mar 2026 |
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| Summit Investment Advisors | 3.6k | $17k | 0% | Mar 2026 |
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| FMR | 2.5k | $20k | -100% | Dec 2025 |
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| California State Teachers Retirement System | 2.2k | $10k | -12% | Mar 2026 |
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| Quadrant Capital | 1.6k | $7.3k | -16% | Mar 2026 |
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| Sterling Capital Management | 1.3k | $6.0k | -46% | Mar 2026 |
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| Tower Research Capital | 1.3k | $9.9k | -47% | Dec 2025 |
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| Harbor Capital Advisors | 1.2k | $6.0k | 8% | Mar 2026 |
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| MAI Wealth Advisors | 1.1k | $4.9k | 0% | Mar 2026 |
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| NISA Investment Advisors | 970.00 | $4.5k | 0% | Mar 2026 |
|
| Wiser Advisor Group | 500.00 | $2.3k | 0% | Mar 2026 |
|
| Pnc Financial Services | 352.00 | $1.6k | 212% | Mar 2026 |
|
| Optiver Holding B.V. | 332.00 | $1.5k | -10% | Mar 2026 |
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| Capital Analysts | 325.00 | $2.0k | 0% | Mar 2026 |
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| Bell Investment Advisors | 293.00 | $1.4k | 100% | Mar 2026 |
|
| Hanson McClain Advisors | 291.00 | $2.3k | -25% | Dec 2025 |
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| EverSource Wealth Advisors | 237.00 | $1.1k | 309% | Mar 2026 |
|
| DiNuzzo Private Wealth | 177.00 | $824.005800 | 0% | Mar 2026 |
|
| Thomas Stevens, CFA" | 148.00 | $687.992800 | 0% | Mar 2026 |
|
| Essential Partners | 110.00 | $511.995000 | 100% | Mar 2026 |
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| Advisors Asset Management | 98.00 | $456.003800 | 0% | Mar 2026 |
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| Us Bancorp | 81.00 | $630.001800 | -89% | Dec 2025 |
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| GAMMA Investing | 72.00 | $335.001600 | -83% | Mar 2026 |
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| Fifth Third Bancorp | 39.00 | $180.999000 | 100% | Mar 2026 |
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| Western Wealth Management | 35.00 | $162.998500 | 100% | Mar 2026 |
|
| IFP Advisors | 34.00 | $158.001400 | 10% | Mar 2026 |
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| Rothschild Investment | 32.00 | $148.998400 | 0% | Mar 2026 |
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| Advisor Group Holdings | 26.00 | $201.000800 | 0% | Dec 2025 |
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| Legacy Wealth Managment | 25.00 | $117.000000 | 0% | Mar 2026 |
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| Root Financial Partners | 22.00 | $102.000800 | 100% | Mar 2026 |
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| Royal Bank of Canada | 17.00 | $0 | -99% | Mar 2026 |
|
| Transamerica Financial Advisors | 11.00 | $51.000400 | 100% | Mar 2026 |
|
| SBI Securities | 10.00 | $47.000000 | 0% | Mar 2026 |
|
Who sold out of Ambac Finl?
| Fund or Company Name | Date Sold | Shares Held | Valued At |
|---|---|---|---|
| Continental General Insurance | Sep 2025 | 2.1M | $17M |
| Walleye Trading | Dec 2025 | 354k | $2.8M |
| Empowered Funds | Sep 2025 | 235k | $2.0M |
| VELA Investment Management | Dec 2025 | 179k | $1.4M |
| Schonfeld Strategic Advisors | Dec 2025 | 170k | $1.3M |
| ExodusPoint Capital Management | Dec 2025 | 110k | $854k |
| Norges Bank Investment Management | Dec 2025 | 75k | $584k |
| Empirical Finance | Sep 2025 | 72k | $602k |
| Creative Planning | Dec 2025 | 69k | $533k |
| Diametric Capital | Dec 2025 | 67k | $517k |
| DLD Asset Management | Dec 2025 | 60k | $470k |
| Calamos Advisors | Dec 2025 | 49k | $382k |
| Two Sigma Investments | Dec 2025 | 45k | $350k |
| Y-Intercept | Dec 2025 | 44k | $341k |
| Balyasny Asset Management | Dec 2025 | 43k | $334k |
| Fox Run Management | Dec 2025 | 42k | $330k |
| Jpmorgan Chase & Co | Sep 2025 | 35k | $288k |
| Peak6 | Dec 2025 | 31k | $237k |
| Aquatic Capital Management | Dec 2025 | 23k | $180k |
| Intech Investment Management | Dec 2025 | 21k | $164k |
| Ieq Capital | Sep 2025 | 14k | $114k |
| nVerses Capital | Dec 2025 | 12k | $95k |
| HPM Partners | Dec 2025 | 11k | $88k |
| Voleon Capital Management | Dec 2025 | 11k | $87k |
| Inscription Capital | Dec 2025 | 11k | $84k |
| Quest Partners | Dec 2025 | 10k | $79k |
| Versant Capital Management | Dec 2025 | 1.8k | $14k |
| Amalgamated Bank | Dec 2025 | 1.3k | $10k |
| National Bank Of Canada /fi/ | Sep 2025 | 385.00 | $3.2k |
| SRS Capital Advisors | Dec 2025 | 257.00 | $2.0k |
| Signature | Dec 2025 | 180.00 | $1.4k |
| True Wealth Design | Dec 2025 | 45.00 | $351.000000 |