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 ($9.7m this quarter). Holder counts are more reliable. Shares outstanding: 44.0m as of 2026-08-05, 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 ≈ $80.19. Options: 6 managers hold calls ($6.5m notional), 5 hold puts ($15.8m).
Trends to Q2 2026
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 |
| Q1 2026 | 371 |
| Q2 2026 | 370 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2024 | 138 | 168 |
| Q4 2024 | 129 | 153 |
| Q1 2025 | 140 | 152 |
| Q2 2025 | 155 | 158 |
| Q3 2025 | 151 | 183 |
| Q4 2025 | 162 | 159 |
| Q1 2026 | 193 | 167 |
| Q2 2026 | 162 | 208 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q3 2025 | $3.4m | $19.7m | 5.75 |
| Q4 2025 | $6.3m | $11.4m | 1.80 |
| Q1 2026 | $7.1m | $5.2m | 0.73 |
| Q2 2026 | $6.5m | $15.8m | 2.43 |
Biggest buyers
| AQR CAPITAL MANAGEMENT LLC | Added | +534.7k |
| GENDELL JEFFREY L | Added | +480.7k |
| HRT FINANCIAL LP | Added | +169.3k |
| FIRST TRUST ADVISORS LP | Added | +161.5k |
| MACKENZIE FINANCIAL CORP | Added | +124.2k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | New | +94.7k |
| AMERICAN CENTURY COMPANIES INC | Added | +87.0k |
| MILLENNIUM MANAGEMENT LLC | New | +83.6k |
| ROYCE & ASSOCIATES LP | Added | +78.2k |
| Squarepoint Ops LLC | Added | +67.9k |
Biggest sellers
| River Road Asset Management, LLC | Reduced | -731.1k |
| TWO SIGMA INVESTMENTS, LP | Reduced | -290.1k |
| FRANKLIN RESOURCES INC | Reduced | -219.2k |
| RAYMOND JAMES FINANCIAL INC | Reduced | -199.9k |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | Reduced | -140.9k |
| Quantinno Capital Management LP | Reduced | -98.7k |
| SG Americas Securities, LLC | Reduced | -94.4k |
| Boston Partners | Reduced | -89.4k |
| WELLINGTON MANAGEMENT GROUP LLP | Reduced | -84.0k |
| Qube Research & Technologies Ltd | Reduced | -59.2k |
Biggest calls
| JANE STREET GROUP, LLC | New | $2.2m27.6k shares |
| Pine Valley Investments Ltd Liability Co | Reduced | $1.3m16.0k shares |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $1.1m14.2k shares |
| CITADEL ADVISORS LLC | Added | $969.9k12.1k shares |
| IMC-Chicago, LLC | Reduced | $697.4k8.7k shares |
| SIMPLEX TRADING, LLC | Added | $184.4k2.3k shares |
Biggest puts
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Added | $7.3m91.5k shares |
| IMC-Chicago, LLC | Added | $4.0m49.5k shares |
| CITADEL ADVISORS LLC | Added | $3.2m39.4k shares |
| JANE STREET GROUP, LLC | New | $1.3m15.6k shares |
| SIMPLEX TRADING, LLC | Reduced | $56.1k700 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 since 1 Apr 2026
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 |
|---|---|---|---|---|---|
| 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 | — | — |
| Q1 2026 | 0 | — | 3 | $14.1m | — |
| Q2 2026 | 0 | — | 2 | $4.0m | — |
| Q3 2026 | 0 | — | 0 | — | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-05-29 | Radtke Lorin Director | Sold | $77.8k1.0k shares |
| 2026-05-11 | Bailenson Robert Chief Operating Officer | Sold | $3.9m50.0k shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| BlackRock, Inc. 0.01% of their portfolio | 5.8m $463.9m | Added +7.0k |
| VANGUARD PORTFOLIO MANAGEMENT LLC 0.01% of their portfolio | 4.0m $317.9m | Added +39.7k |
| DIMENSIONAL FUND ADVISORS LP 0.04% of their portfolio | 3.0m $242.7m | Added +16.2k |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 1.9m $153.6m | Reduced -49.0k |
| STATE STREET CORP 0.00% of their portfolio | 1.6m $127.2m | Added +14.2k |
| FIRST TRUST ADVISORS LP 0.07% of their portfolio | 1.5m $121.7m | Added +161.5k |
| AMERICAN CENTURY COMPANIES INC 0.05% of their portfolio | 1.4m $112.5m | Added +87.0k |
| AQR CAPITAL MANAGEMENT LLC 0.04% of their portfolio | 1.4m $111.7m | Added +534.7k |
| REINHART PARTNERS, LLC. 2.28% of their portfolio | 1.2m $99.9m | Reduced -41.0k |
| River Road Asset Management, LLC 1.03% of their portfolio | 1.2m $93.0m | Reduced -731.1k |
| ROYCE & ASSOCIATES LP 0.68% of their portfolio | 1.1m $84.9m | Added +78.2k |
| FULLER & THALER ASSET MANAGEMENT, INC. 0.18% of their portfolio | 820.7k $65.8m | Reduced -29.0k |
| PRINCIPAL FINANCIAL GROUP INC 0.03% of their portfolio | 754.9k $60.5m | Reduced -25.7k |
| GENDELL JEFFREY L 0.53% of their portfolio | 726.1k $58.2m | Added +480.7k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 716.7k $57.5m | Reduced -17.6k |
| MORGAN STANLEY 0.00% of their portfolio | 594.4k $47.6m | Added +24.4k |
| GOLDMAN SACHS GROUP INC 0.00% of their portfolio | 574.0k $46.0m | Added +2.6k |
| NORGES BANK 0.00% of their portfolio | 537.8k $43.1m | Not comparable |
| Boston Partners 0.03% of their portfolio | 486.5k $39.2m | Reduced -89.4k |
| NORTHERN TRUST CORP 0.00% of their portfolio | 444.6k $35.6m | Reduced -3.7k |
| BROWN ADVISORY INC 0.05% of their portfolio | 415.7k $33.3m | Added +10.7k |
| Quantinno Capital Management LP 0.04% of their portfolio | 400.7k $32.1m | Reduced -98.7k |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio | 386.4k $31.0m | Added +21.9k |
| Long Focus Capital Management, LLC 1.24% of their portfolio | 380.0k $30.5m | Unchanged |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 375.6k $30.1m | Added +15.8k |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 0.01% of their portfolio | 300.6k $24.1m | Added +46.1k |
| Bank of New York Mellon Corp 0.00% of their portfolio | 287.2k $23.0m | Reduced -11.0k |
| WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio | 283.6k $22.7m | Reduced -84.0k |
| Qube Research & Technologies Ltd 0.02% of their portfolio | 273.2k $21.9m | Reduced -59.2k |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 264.6k $21.2m | Reduced -5.0k |
| Pine Valley Investments Ltd Liability Co 0.86% of their portfolio | 253.1k $20.3m | Reduced -300 |
| Gotham Asset Management, LLC 0.05% of their portfolio | 249.5k $20.0m | Reduced -22.9k |
| TWO SIGMA INVESTMENTS, LP 0.01% of their portfolio | 233.3k $18.7m | Reduced -290.1k |
| RAYMOND JAMES FINANCIAL INC 0.00% of their portfolio | 216.1k $17.3m | Reduced -199.9k |
| BARCLAYS PLC 0.01% of their portfolio | 200.5k $16.1m | Reduced -41.7k |
| UBS Group AG 0.00% of their portfolio | 190.3k $15.3m | Added +30.8k |
| HRT FINANCIAL LP 0.03% of their portfolio | 180.3k $14.5m | Added +169.3k |
| D. E. Shaw & Co., Inc. 0.01% of their portfolio | 180.1k $14.4m | Added +48.1k |
| Public Sector Pension Investment Board 0.04% of their portfolio | 179.6k $14.4m | Reduced -8.6k |
| CITADEL ADVISORS LLC 0.01% of their portfolio | 168.9k $13.5m | Added +41.5k |
| Man Group plc 0.02% of their portfolio | 167.6k $13.4m | Reduced -36.3k |
| Allianz Asset Management GmbH 0.01% of their portfolio | 167.0k $13.6m | Added +34.7k |
| FRANKLIN RESOURCES INC 0.00% of their portfolio | 165.3k $13.2m | Reduced -219.2k |
| Invesco Ltd. 0.00% of their portfolio | 163.4k $13.1m | Reduced -34.0k |
| LRI Investments, LLC 0.95% of their portfolio | 147.3k $11.8m | Reduced -22.8k |
| VICTORY CAPITAL MANAGEMENT INC 0.01% of their portfolio | 146.4k $11.7m | Added +20.9k |
| Russell Investments Group, Ltd. 0.01% of their portfolio | 140.0k $11.2m | Added +9.1k |
| BNP PARIBAS FINANCIAL MARKETS 0.01% of their portfolio | 137.9k $11.1m | Reduced -33.5k |
| MACKENZIE FINANCIAL CORP 0.01% of their portfolio | 135.5k $10.9m | Added +124.2k |
| AMERIPRISE FINANCIAL INC 0.00% of their portfolio | 125.9k $10.1m | Reduced -4.5k |
| JPMORGAN CHASE & CO 0.00% of their portfolio | 125.3k $10.2m | Added +30.1k |
| Clearbridge Investments, LLC 0.01% of their portfolio | 122.4k $9.8m | Reduced -144 |
| Cambria Investment Management, L.P. 0.47% of their portfolio | 118.6k $9.5m | Added +8.0k |
| Legal & General Group Plc 0.00% of their portfolio | 97.8k $7.8m | Reduced -3.7k |
| FMR LLC 0.00% of their portfolio | 96.6k $7.7m | Added +22.3k |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.01% of their portfolio | 94.7k $7.6m | New |
| NATIXIS 0.04% of their portfolio | 94.2k $7.5m | Added +65.0k |
| California Public Employees Retirement System 0.00% of their portfolio | 93.7k $7.5m | Reduced -33.3k |
| WELLS FARGO & COMPANY/MN 0.00% of their portfolio | 93.0k $7.5m | Reduced -16.6k |
| CAPITOLIS LIQUID GLOBAL MARKETS LLC 0.03% of their portfolio | 86.9k $7.0m | Unchanged |
| Robeco Institutional Asset Management B.V. 0.01% of their portfolio | 86.8k $7.0m | Reduced -8.3k |
| RHUMBLINE ADVISERS 0.01% of their portfolio | 85.6k $6.9m | Reduced -20.9k |
| Swiss National Bank 0.00% of their portfolio | 85.5k $6.9m | Reduced -1.1k |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 83.6k $6.7m | New |
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC 0.02% of their portfolio | 83.0k $6.7m | Added +4.0k |
| CAPITAL FUND MANAGEMENT S.A. 0.05% of their portfolio | 81.4k $6.5m | Added +38.6k |
| ENVESTNET ASSET MANAGEMENT INC 0.00% of their portfolio | 79.2k $6.3m | Reduced -15.2k |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE 0.00% of their portfolio | 78.6k $6.3m | Reduced -488 |
| Trexquant Investment LP 0.04% of their portfolio | 78.0k $6.3m | Added +16.3k |
| Amundi 0.00% of their portfolio | 77.9k $6.2m | Added +21.4k |
| TEACHER RETIREMENT SYSTEM OF TEXAS 0.02% of their portfolio | 77.7k $6.2m | Reduced -1.8k |
| Squarepoint Ops LLC 0.01% of their portfolio | 75.8k $6.1m | Added +67.9k |
| Bridgewater Associates, LP 0.02% of their portfolio | 66.4k $5.3m | Reduced -5.1k |
| Nuveen, LLC 0.00% of their portfolio | 65.4k $5.2m | Reduced -17.7k |
| Vest Financial, LLC 0.05% of their portfolio | 62.7k $5.0m | Reduced -17.9k |
| Point72 Asset Management, L.P. 0.01% of their portfolio | 58.0k $4.6m | New |
| STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM 0.01% of their portfolio | 56.3k $4.5m | Reduced -2.0k |
| ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio | 55.5k $4.5m | Added +6.4k |
| STIFEL FINANCIAL CORP 0.00% of their portfolio | 51.7k $4.1m | Reduced -1.3k |
| Cerity Partners LLC 0.00% of their portfolio | 49.8k $4.0m | Reduced -4.8k |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio | 48.2k $3.9m | Reduced -1.4k |
| HSBC HOLDINGS PLC 0.00% of their portfolio | 45.3k $3.6m | Reduced -43.6k |
| VANGUARD ASSET MANAGEMENT, Ltd 0.00% of their portfolio | 44.9k $3.6m | Added +5.8k |
| PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio | 41.6k $3.3m | Added +1.3k |
| SG Americas Securities, LLC 0.00% of their portfolio | 40.8k $3.3m | Reduced -94.4k |
| De Lisle Partners LLP 0.35% of their portfolio | 39.7k $3.2m | Unchanged |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC 0.01% of their portfolio | 38.3k $3.1m | Added +7.2k |
| Engineers Gate Manager LP 0.04% of their portfolio | 36.9k $3.0m | Added +31.4k |
| VIRGINIA RETIREMENT SYSTEMS ET Al 0.02% of their portfolio | 35.1k $2.8m | Unchanged |
| STATE OF WISCONSIN INVESTMENT BOARD 0.01% of their portfolio | 35.1k $2.8m | Reduced -1.8k |
| VELA Investment Management, LLC 0.69% of their portfolio | 34.9k $2.8m | Unchanged |
| HARBOR CAPITAL ADVISORS, INC. 0.19% of their portfolio | 34.7k $2.8m | Added +864 |
| EULAV Asset Management 0.08% of their portfolio | 32.0k $2.6m | Reduced -28.0k |
| BANK OF NOVA SCOTIA 0.00% of their portfolio | 27.8k $2.2m | Reduced -32.2k |
| NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio | 27.7k $2.2m | Reduced -1.6k |
| Vanguard Global Advisers, LLC 0.00% of their portfolio | 27.3k $2.2m | Reduced -12.0k |
| Creative Planning 0.00% of their portfolio | 26.7k $2.1m | Added +4.2k |
| Diametric Capital, LP 0.23% of their portfolio | 26.4k $2.1m | Added +11.8k |
| MONECO ADVISORS, LLC 0.13% of their portfolio | 26.4k $2.1m | New |
| SEI INVESTMENTS CO 0.00% of their portfolio | 25.9k $2.1m | Reduced -14.6k |