ASSURED GUARANTY LTD AGO
COM · Common Stock · CUSIP G0585R106
- SectorFinancials
- IndustrySurety Insurance
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($13.0m this quarter). Holder counts are more reliable. Shares outstanding: 44.9m as of 2026-02-25, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $89.71. Options: 6 managers hold calls ($6.3m notional), 6 hold puts ($11.4m).
Trends to Q4 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 249 |
| Q4 2022 | 264 |
| Q1 2023 | 264 |
| Q2 2023 | 264 |
| Q3 2023 | 256 |
| Q4 2023 | 281 |
| Q1 2024 | 333 |
| Q2 2024 | 324 |
| Q3 2024 | 322 |
| Q4 2024 | 322 |
| Q1 2025 | 333 |
| Q2 2025 | 351 |
| Q3 2025 | 336 |
| Q4 2025 | 363 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q1 2024 | 167 | 142 |
| Q2 2024 | 155 | 162 |
| Q3 2024 | 138 | 168 |
| Q4 2024 | 129 | 153 |
| Q1 2025 | 140 | 152 |
| Q2 2025 | 155 | 158 |
| Q3 2025 | 151 | 183 |
| Q4 2025 | 162 | 159 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q1 2025 | $10.2m | $3.9m | 0.39 |
| Q2 2025 | $1.9m | $2.1m | 1.10 |
| Q3 2025 | $3.4m | $19.7m | 5.75 |
| Q4 2025 | $6.3m | $11.4m | 1.80 |
Biggest buyers
| FULLER & THALER ASSET MANAGEMENT, INC. | Added | +767.4k |
| TWO SIGMA INVESTMENTS, LP | Added | +165.2k |
| REINHART PARTNERS, LLC. | Added | +132.4k |
| BARCLAYS PLC | Added | +132.2k |
| FIRST TRUST ADVISORS LP | Added | +131.2k |
| Quantinno Capital Management LP | Added | +100.6k |
| Corient Private Wealth LP | Added | +98.1k |
| JANE STREET GROUP, LLC | Added | +91.0k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Added | +87.7k |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | New | +73.8k |
Biggest sellers
| WELLINGTON MANAGEMENT GROUP LLP | Reduced | -1.8m |
| DIMENSIONAL FUND ADVISORS LP | Reduced | -221.2k |
| VANGUARD GROUP INC | Reduced | -178.3k |
| INTECH INVESTMENT MANAGEMENT LLC | Reduced | -109.1k |
| Cerity Partners LLC | Reduced | -106.3k |
| Allianz Asset Management GmbH | Reduced | -101.5k |
| TUDOR INVESTMENT CORP ET AL | Reduced | -100.3k |
| JPMORGAN CHASE & CO | Reduced | -88.0k |
| UBS Group AG | Reduced | -84.1k |
| STATE STREET CORP | Reduced | -81.7k |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $4.2m47.1k shares |
| Pine Valley Investments Ltd Liability Co | New | $1.4m16.0k shares |
| CITADEL ADVISORS LLC | Reduced | $548.2k6.1k shares |
| GROUP ONE TRADING LLC | Reduced | $53.9k600 shares |
| Walleye Trading LLC | New | $18.0k200 shares |
| SIMPLEX TRADING, LLC | Reduced | $9.0k100 shares |
Biggest puts
| CITIGROUP INC | New | $9.0m100.0k shares |
| CITADEL ADVISORS LLC | Reduced | $790.9k8.8k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $745.9k8.3k shares |
| GROUP ONE TRADING LLC | Unchanged | $467.3k5.2k shares |
| Walleye Trading LLC | New | $251.6k2.8k shares |
| SIMPLEX TRADING, LLC | Added | $125.8k1.4k shares |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
| BlackRock, Inc. 13G · institution filed 2025-07-18 | 11.0% |
| VANGUARD PORTFOLIO MANAGEMENT LLC 13G · institution new · filed 2026-04-28 | 8.8% |
| VANGUARD CAPITAL MANAGEMENT LLC 13G · institution new · filed 2026-04-28 | 5.1% |
Fell to 5% or below in the last year: VANGUARD GROUP INC (0.0%, 2026-03-26; now reported by VANGUARD PORTFOLIO MANAGEMENT LLC), WELLINGTON MANAGEMENT GROUP LLP (1.3%, 2026-02-10)
Insider purchases and sales in Q4 2025
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q1 2024 | 0 | — | 1 | $5.1m | — |
| Q2 2024 | 0 | — | 3 | $5.8m | — |
| Q3 2024 | 0 | — | 2 | $2.8m | — |
| Q4 2024 | 0 | — | 2 | $5.3m | — |
| Q1 2025 | 0 | — | 0 | — | — |
| Q2 2025 | 0 | — | 2 | $7.3m | — |
| Q3 2025 | 0 | — | 2 | $5.4m | — |
| Q4 2025 | 0 | — | 0 | — | — |
None reported in Q4 2025.
Holders, Q4 2025
| Manager | Shares | Change |
|---|---|---|
| VANGUARD GROUP INC 0.01% of their portfolio | 6.2m $553.0m | Reduced -178.3k |
| BlackRock, Inc. 0.01% of their portfolio | 5.6m $499.9m | Added +32.3k |
| DIMENSIONAL FUND ADVISORS LP 0.06% of their portfolio | 3.2m $283.4m | Reduced -221.2k |
| River Road Asset Management, LLC 1.86% of their portfolio | 1.9m $169.5m | Added +42.3k |
| FULLER & THALER ASSET MANAGEMENT, INC. 0.27% of their portfolio | 1.8m $158.5m | Added +767.4k |
| STATE STREET CORP 0.00% of their portfolio | 1.6m $143.5m | Reduced -81.7k |
| FIRST TRUST ADVISORS LP 0.10% of their portfolio | 1.5m $131.6m | Added +131.2k |
| REINHART PARTNERS, LLC. 3.40% of their portfolio | 1.3m $113.5m | Added +132.4k |
| AMERICAN CENTURY COMPANIES INC 0.05% of their portfolio | 1.2m $108.9m | Added +67.1k |
| ROYCE & ASSOCIATES LP 0.90% of their portfolio | 983.4k $88.4m | Reduced -52.4k |
| PRINCIPAL FINANCIAL GROUP INC 0.04% of their portfolio | 805.9k $72.4m | Reduced -19.6k |
| Boston Partners 0.07% of their portfolio | 766.7k $68.3m | Reduced -24.5k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 764.1k $68.7m | Reduced -16.6k |
| WELLINGTON MANAGEMENT GROUP LLP 0.01% of their portfolio | 613.8k $55.2m | Reduced -1.8m |
| MORGAN STANLEY 0.00% of their portfolio | 594.9k $53.5m | Reduced -57.0k |
| NORGES BANK 0.01% of their portfolio | 573.5k $51.5m | Not comparable |
| AQR CAPITAL MANAGEMENT LLC 0.02% of their portfolio | 526.1k $47.3m | Reduced -14.7k |
| RAYMOND JAMES FINANCIAL INC 0.01% of their portfolio | 499.5k $45.1m | Reduced -12.4k |
| NORTHERN TRUST CORP 0.01% of their portfolio | 447.0k $40.2m | Reduced -35.1k |
| BROWN ADVISORY INC 0.05% of their portfolio | 436.7k $39.3m | Reduced -51.5k |
| GOLDMAN SACHS GROUP INC 0.01% of their portfolio | 428.8k $38.5m | Added +18.7k |
| Qube Research & Technologies Ltd 0.05% of their portfolio | 405.0k $36.4m | Added +16.9k |
| Long Focus Capital Management, LLC 1.70% of their portfolio | 380.0k $34.2m | Added +60.0k |
| Quantinno Capital Management LP 0.07% of their portfolio | 375.7k $33.8m | Added +100.6k |
| AMERIPRISE FINANCIAL INC 0.01% of their portfolio | 323.1k $29.0m | Reduced -18.1k |
| TWO SIGMA INVESTMENTS, LP 0.04% of their portfolio | 320.4k $28.8m | Added +165.2k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 316.3k $28.4m | Reduced -5.3k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 308.5k $27.7m | Reduced -38.9k |
| Pine Valley Investments Ltd Liability Co 1.36% of their portfolio | 303.0k $27.2m | Added +2.0k |
| LRI Investments, LLC 2.15% of their portfolio | 296.7k $26.7m | Unchanged |
| FRANKLIN RESOURCES INC 0.01% of their portfolio | 272.5k $24.5m | Reduced -47.1k |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 269.8k $24.2m | Added +9.8k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.01% of their portfolio | 258.4k $23.2m | Added +87.7k |
| Gotham Asset Management, LLC 0.08% of their portfolio | 231.2k $20.8m | Added +45.2k |
| Invesco Ltd. 0.00% of their portfolio | 194.1k $17.4m | Added +2.6k |
| UBS Group AG 0.00% of their portfolio | 185.1k $16.6m | Reduced -84.1k |
| Public Sector Pension Investment Board 0.05% of their portfolio | 178.4k $16.0m | Reduced -15.2k |
| D. E. Shaw & Co., Inc. 0.01% of their portfolio | 151.4k $13.6m | Reduced -19.1k |
| BARCLAYS PLC 0.01% of their portfolio | 150.5k $13.5m | Added +132.2k |
| CITADEL ADVISORS LLC 0.01% of their portfolio | 146.8k $13.2m | Added +59.9k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio | 146.6k $13.2m | Reduced -11.9k |
| MILLENNIUM MANAGEMENT LLC 0.01% of their portfolio | 142.8k $12.8m | Added +30.9k |
| BNP PARIBAS FINANCIAL MARKETS 0.01% of their portfolio | 142.4k $12.8m | Added +56.2k |
| California Public Employees Retirement System 0.01% of their portfolio | 131.5k $11.8m | Reduced -20.4k |
| Clearbridge Investments, LLC 0.01% of their portfolio | 126.2k $11.3m | Reduced -10.1k |
| Russell Investments Group, Ltd. 0.01% of their portfolio | 125.8k $11.3m | Reduced -2.5k |
| TUDOR INVESTMENT CORP ET AL 0.06% of their portfolio | 122.6k $11.0m | Reduced -100.3k |
| Bridgewater Associates, LP 0.04% of their portfolio | 122.1k $11.0m | Reduced -21.9k |
| Brandywine Global Investment Management, LLC 0.07% of their portfolio | 122.0k $11.0m | Reduced -4.6k |
| Corient Private Wealth LP 0.00% of their portfolio | 117.5k $4.4m | Added +98.1k |
| JANE STREET GROUP, LLC 0.01% of their portfolio | 114.5k $10.3m | Added +91.0k |
| Legal & General Group Plc 0.00% of their portfolio | 112.2k $10.1m | Reduced -24.3k |
| Allianz Asset Management GmbH 0.01% of their portfolio | 111.6k $10.0m | Reduced -101.5k |
| Capitolis Liquid Global Markets LLC 0.06% of their portfolio | 111.1k $10.0m | Reduced -9.7k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 108.7k $9.8m | Reduced -5.9k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 105.3k $9.5m | Reduced -88.0k |
| RHUMBLINE ADVISERS 0.01% of their portfolio | 104.7k $9.4m | Reduced -1.9k |
| HSBC HOLDINGS PLC 0.00% of their portfolio | 102.0k $9.2m | Added +24.4k |
| Robeco Institutional Asset Management B.V. 0.01% of their portfolio | 97.1k $8.7m | Reduced -13.7k |
| TWO SIGMA ADVISERS, LP 0.02% of their portfolio | 97.1k $8.7m | Added +58.0k |
| VICTORY CAPITAL MANAGEMENT INC 0.00% of their portfolio | 96.7k $8.7m | Added +9.8k |
| Man Group plc 0.02% of their portfolio | 94.9k $8.5m | Added +47.4k |
| Cambria Investment Management, L.P. 0.49% of their portfolio | 93.8k $8.4m | Reduced -20.4k |
| Swiss National Bank 0.00% of their portfolio | 89.2k $8.0m | Reduced -1.2k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 82.9k $7.4m | Added +21.0k |
| Nuveen, LLC 0.00% of their portfolio | 81.7k $7.3m | Added +37 |
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC 0.02% of their portfolio | 80.3k $7.2m | Added +30 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.01% of their portfolio | 80.0k $7.2m | Added +324 |
| FMR LLC 0.00% of their portfolio | 75.4k $6.8m | Added +1.1k |
| ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio | 74.7k $6.7m | Reduced -11.2k |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.01% of their portfolio | 73.8k $6.6m | New |
| SG Americas Securities, LLC 0.01% of their portfolio | 72.1k $6.5m | New |
| Trexquant Investment LP 0.06% of their portfolio | 70.1k $6.3m | New |
| Vest Financial, LLC 0.08% of their portfolio | 68.8k $6.2m | Added +8.1k |
| TORONTO DOMINION BANK 0.01% of their portfolio | 65.1k $5.9m | Added +47.1k |
| HRT FINANCIAL LP 0.02% of their portfolio | 64.1k $5.8m | Added +8.1k |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.01% of their portfolio | 63.4k $5.7m | Unchanged |
| EULAV Asset Management 0.14% of their portfolio | 60.0k $5.4m | Unchanged |
| Cerity Partners LLC 0.01% of their portfolio | 56.3k $5.1m | Reduced -106.3k |
| Amundi 0.00% of their portfolio | 54.9k $4.9m | Reduced -2.7k |
| De Lisle Partners LLP 0.57% of their portfolio | 49.7k $4.5m | Unchanged |
| STIFEL FINANCIAL CORP 0.00% of their portfolio | 49.3k $4.4m | Added +1.8k |
| CAPITAL FUND MANAGEMENT S.A. 0.04% of their portfolio | 48.0k $4.3m | Reduced -10.0k |
| Y-Intercept (Hong Kong) Ltd 0.09% of their portfolio | 45.5k $4.1m | Added +24.0k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 42.8k $3.8m | Reduced -3.3k |
| LPL Financial LLC 0.00% of their portfolio | 42.3k $3.8m | Added +8.1k |
| Point72 Asset Management, L.P. 0.01% of their portfolio | 40.0k $3.6m | New |
| STATE OF WISCONSIN INVESTMENT BOARD 0.01% of their portfolio | 39.2k $3.5m | Reduced -939 |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 38.7k $3.5m | Added +1.2k |
| RBF Capital, LLC 0.07% of their portfolio | 36.0k $3.2m | Added +18.0k |
| XTX Topco Ltd 0.08% of their portfolio | 35.3k $3.2m | Added +30.1k |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC 0.00% of their portfolio | 35.0k $3.1m | Added +836 |
| VELA Investment Management, LLC 0.85% of their portfolio | 34.6k $3.1m | Added +269 |
| ExodusPoint Capital Management, LP 0.03% of their portfolio | 32.1k $2.9m | New |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 31.8k $2.9m | Unchanged |
| VIRGINIA RETIREMENT SYSTEMS ET Al 0.02% of their portfolio | 31.4k $2.8m | Added +18.2k |
| Verdence Capital Advisors LLC 0.15% of their portfolio | 29.0k $2.6m | Unchanged |
| HARBOR CAPITAL ADVISORS, INC. 0.20% of their portfolio | 28.1k $2.5m | Added +655 |
| INTECH INVESTMENT MANAGEMENT LLC 0.02% of their portfolio | 27.6k $2.5m | Reduced -109.1k |
| SEI INVESTMENTS CO 0.00% of their portfolio | 26.1k $2.3m | Added +12.8k |