AGO · Assured Guaranty Ltd · Holdings
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Institutional Ownership Trend
Superinvestors Holding AGO
All superinvestors →Holder Concentration
Across 371 13F filersWho Holds AGO
Last 8 quarters through Sep 30, 2026 (filing window open)Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.
Jun 30, 2026, the newest closed quarter: 370 filers, like-for-like change -0.7%; actively managed books 0.0%; index-like books -2.1%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 53.4% | 202 | -1.8% |
| Exempt adviser | 0.7% | 5 | -14.2% |
| Adviser | 1.1% | 5 | -35.3% |
| Bank | 8.4% | 21 | -1.1% |
| Insurer | 1.8% | 1 | -3.3% |
| Broker-dealer | 0.0% | 2 | +9.6% |
| Benefit plan | 0.6% | 6 | -2.9% |
| Non-US | 2.5% | 12 | +0.7% |
| Holding company | 18.0% | 8 | -0.1% |
| Unknown | 13.4% | 108 | +10.3% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Index-like | 33.1% | 42 | -2.1% |
| Systematic-like | 3.4% | 29 | +2.5% |
| Concentrated | 2.4% | 58 | +79.3% |
| Diversified active | 61.0% | 241 | -1.8% |
| Not measured | 0.0% | 0 | — |
| Unknown | 0.0% | 0 | — |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 48.2% | 231 | -2.0% |
| Medium turnover | 30.5% | 68 | -1.5% |
| High turnover | 4.6% | 44 | +23.3% |
| Unknown | 16.7% | 27 | -0.4% |
| Not measured | 0.0% | 0 | — |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Short horizon | 15.8% | 41 | -0.8% |
| Medium horizon | 18.1% | 66 | -3.1% |
| Long horizon | 60.7% | 243 | +3.3% |
| Unknown | 5.4% | 20 | -25.5% |
| Not measured | 0.0% | 0 | — |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 0.6% | 82 | +8.8% |
| $1B to $10B | 9.6% | 102 | -18.4% |
| $10B to $100B | 15.4% | 112 | +13.2% |
| $100B or more | 74.4% | 74 | -0.4% |
| Not measured | 0.0% | 0 | — |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Individuals and high net worth | 3.2% | 118 | -11.9% |
| Pooled investment vehicles | 4.1% | 28 | +3.3% |
| Registered funds and BDCs | 35.2% | 27 | +0.8% |
| Pension and profit sharing plans | 0.0% | 3 | +24.6% |
| Insurance companies | 0.0% | 2 | +39.3% |
| Charitable organizations | 0.0% | 1 | +56700.0% |
| Governments and sovereign funds | 0.4% | 4 | -4.9% |
| Corporations | 0.1% | 1 | +244.0% |
| Other investment advisers | 0.1% | 5 | +14.4% |
| Diversified | 10.4% | 13 | -8.8% |
| Other | 0.0% | 0 | — |
| Unknown | 46.6% | 168 | +0.7% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Hedge funds | 15.7% | 52 | +6.5% |
| Private equity funds | 0.5% | 12 | +28.1% |
| Venture capital funds | 0.0% | 1 | +281.9% |
| Real estate funds | 0.0% | 5 | +7.9% |
| Liquidity funds | 0.0% | 2 | -6.4% |
| Securitized asset funds | 0.0% | 1 | -96.8% |
| Other private funds | 10.9% | 17 | +3.8% |
| Mixed private funds | 0.1% | 1 | +13.1% |
| Private funds, type not stated | 0.2% | 2 | -22.2% |
| No private funds | 26.6% | 114 | -7.7% |
| Unknown | 45.9% | 163 | +1.0% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 93.0% | 313 | -0.7% |
| Outside the US | 7.0% | 57 | +0.9% |
The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.
How the mix is measured
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Excluded 3 holders with no observed 2026-03-31 13F and 4 holders with no observed 2026-06-30 13F. Compared across CIK changes: JANUS HENDERSON GROUP PLC continues as Jupiter Topco LLC.
Conviction and Crowding
370 13F filers, quarter ended Jun 30, 2026Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.
Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).
Estimated Holder Cost Basis
Quarter ended Jun 30, 2026, on that quarter's share basisEstimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.
Estimated cost covers 25.6% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.
Shared Holders
Companies AGO's active holders also own, quarter ended Jun 30, 2026Shareholder Targets
13F filers that own its peers but not AGO, quarter ended Jun 30, 2026Found through its holder-overlap peers: LCII, MMS, MAT, NOMD, UFPI, WTM, ATKR, ICHR, AVTR, TDW, MSM, WYNN, AR, GLNG, FCNCA, IESC, CZR, MOH, SFM, DINO. 1,814 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | HARRIS ASSOCIATES L P Registered adviser, Index-like | $2,131,948,293 2 held | FCNCA, MOH |
| 2 | Dodge & Cox Registered adviser, Diversified active | $2,029,294,171 2 held | AVTR, FCNCA |
| 3 | Capital World Investors Adviser, Diversified active | $1,540,834,658 2 held | WYNN, MOH |
| 4 | TCTC Holdings, LLC Unknown, Diversified active | $858,838,965 1 held | DINO |
| 5 | BARROW HANLEY MEWHINNEY & STRAUSS LLC Registered adviser, Diversified active | $781,252,809 5 held | WYNN, AVTR, ICHR |
| 6 | EdgePoint Investment Group Inc. Registered adviser, Concentrated | $708,538,661 1 held | MAT |
| 7 | T. Rowe Price Investment Management, Inc. Adviser, Diversified active | $641,948,213 9 held | GLNG, WTM, UFPI |
| 8 | Lingotto Investment Management LLP Unknown, Concentrated | $574,377,763 1 held | MOH |
| 9 | Naria Inc. Unknown, Unknown | $512,562,833 1 held | GLNG |
| 10 | LSV ASSET MANAGEMENT Registered adviser, Diversified active | $485,764,454 8 held | DINO, MAT, ATKR |
Fund Ownership of AGO by Fund Type
Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026Index funds and index ETFs hold 11.86% of shares outstanding.
| Fund type | Of shares outstanding | Shares |
|---|---|---|
| Index funds | 1.29% | 566,008 |
| Index ETFs | 10.58% | 4,651,989 |
| Active ETFs | 1.92% | 845,624 |
| Active funds | 3.95% | 1,737,382 |
| Unclassified | 3.01% | 1,323,543 |
| All registered funds | 20.75% | 9,124,546 |
How fund types are measured
Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mega BlackRock, Inc. Holding company | $463,926,151 | 14.06% | 5,787,502 | Shares | 2026-08-07 | |
| Mega VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser | $317,873,758 | 9.63% | 3,965,491 | Shares | 2026-08-13 | |
| Mega DIMENSIONAL FUND ADVISORS LP Registered adviser | $242,723,756 | 7.35% | 3,027,991 | Shares | 2026-08-11 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC Registered adviser | $153,639,064 | 4.66% | 1,916,655 | Shares | 2026-08-13 | |
| Mega STATE STREET CORP Bank | $127,167,106 | 3.85% | 1,586,416 | Shares | 2026-09-22 | |
| Mega FIRST TRUST ADVISORS LP Registered adviser | $121,689,933 | 3.69% | 1,518,088 | Shares | 2026-08-11 | |
| Mega AMERICAN CENTURY COMPANIES INC | $112,471,934 | 3.41% | 1,403,093 | Shares | 2026-08-12 | |
| Mega AQR CAPITAL MANAGEMENT LLC Registered adviser | $111,835,062 | 3.39% | 1,395,148 | Shares | 2026-08-14 | |
| Mid River Road Asset Management, LLC Registered adviser | $93,007,243 | 2.82% | 1,160,270 | Shares | 2026-07-17 | |
| Large ROYCE & ASSOCIATES LP Registered adviser | $85,001,423 | 2.58% | 1,060,397 | Shares | 2026-08-14 | |
| Mid REINHART PARTNERS, LLC. Registered adviser | $80,498,764 | 2.44% | 1,188,700 | Shares | 2026-10-09 | |
| Large FULLER & THALER ASSET MANAGEMENT, INC. Registered adviser | $65,783,464 | 1.99% | 820,652 | Shares | 2026-08-12 | |
| Mega PRINCIPAL FINANCIAL GROUP INC Insurer | $60,509,496 | 1.83% | 754,859 | Shares | 2026-08-04 | |
| Large GENDELL JEFFREY L | $58,207,061 | 1.76% | 726,136 | Shares | 2026-08-14 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC Registered adviser | $57,450,911 | 1.74% | 716,703 | Shares | 2026-08-12 | |
| Mega MORGAN STANLEY Holding company | $47,647,581 | 1.44% | 594,406 | Shares | 2026-08-13 | |
| Mega GOLDMAN SACHS GROUP INC Holding company | $46,008,953 | 1.39% | 573,964 | Shares | 2026-08-14 | |
| Mega NORGES BANK Non-US | $43,113,655 | 1.31% | 537,845 | Shares | 2026-08-12 | |
| Mega Boston Partners Registered adviser | $38,994,471 | 1.18% | 486,458 | Shares | 2026-08-04 | |
| Mega NORTHERN TRUST CORP Bank | $35,636,407 | 1.08% | 444,566 | Shares | 2026-08-13 | |
| Large BROWN ADVISORY INC | $33,320,508 | 1.01% | 415,675 | Shares | 2026-08-14 | |
| Large Quantinno Capital Management LP Registered adviser | $32,117,306 | 0.97% | 400,665 | Shares | 2026-08-13 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC Registered adviser | $30,972,621 | 0.94% | 386,385 | Shares | 2026-08-14 | |
| Mid Long Focus Capital Management, LLC Registered adviser | $30,460,800 | 0.92% | 380,000 | Shares | 2026-08-14 | |
| Mega BANK OF AMERICA CORP /DE/ Bank | $30,107,773 | 0.91% | 375,596 | Shares | 2026-08-14 | |
| Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP Registered adviser | $24,095,454 | 0.73% | 300,592 | Shares | 2026-08-13 | |
| Mega Bank of New York Mellon Corp Bank | $23,024,993 | 0.70% | 287,238 | Shares | 2026-08-06 | |
| Mega WELLINGTON MANAGEMENT GROUP LLP Holding company | $22,736,100 | 0.69% | 283,634 | Shares | 2026-08-14 | |
| Mega Qube Research & Technologies Ltd Exempt adviser | $21,900,994 | 0.66% | 273,216 | Shares | 2026-08-14 | |
| Mega VANGUARD FIDUCIARY TRUST CO | $21,206,568 | 0.64% | 264,553 | Shares | 2026-08-13 | |
| Mid Pine Valley Investments Ltd Liability Co Registered adviser | $20,291,381 | 0.61% | 253,136 | Shares | 2026-07-24 | |
| Large Gotham Asset Management, LLC Registered adviser | $20,000,080 | 0.61% | 249,502 | Shares | 2026-08-14 | |
| Mega TWO SIGMA INVESTMENTS, LP Registered adviser | $18,703,011 | 0.57% | 233,321 | Shares | 2026-08-14 | |
| Mega RAYMOND JAMES FINANCIAL INC | $17,322,816 | 0.52% | 216,103 | Shares | 2026-08-14 | |
| Mega BARCLAYS PLC Bank | $16,074,163 | 0.49% | 200,526 | Shares | 2026-08-14 | |
| Mega UBS Group AG Bank | $15,255,008 | 0.46% | 190,307 | Shares | 2026-08-13 | |
| Large HRT FINANCIAL LP | $14,452,126 | 0.44% | 180,291 | Shares | 2026-08-14 | |
| Mega D. E. Shaw & Co., Inc. | $14,437,376 | 0.44% | 180,107 | Shares | 2026-08-14 | |
| Large Public Sector Pension Investment Board Non-US | $14,395,774 | 0.44% | 179,588 | Shares | 2026-08-13 | |
| Mega Allianz Asset Management GmbH | $13,753,531 | 0.42% | 171,576 | Shares | 2026-09-02 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $13,539,664 | 0.41% | 168,908 | Shares | 2026-09-02 | |
| Large Man Group plc | $13,438,743 | 0.41% | 167,649 | Shares | 2026-08-14 | |
| Mega FRANKLIN RESOURCES INC Adviser | $13,248,923 | 0.40% | 165,281 | Shares | 2026-08-13 | |
| Mega Invesco Ltd. Adviser | $13,096,540 | 0.40% | 163,380 | Shares | 2026-08-14 | |
| Mid LRI Investments, LLC Registered adviser | $11,808,289 | 0.36% | 147,309 | Shares | 2026-07-14 | |
| Mega VICTORY CAPITAL MANAGEMENT INC Registered adviser | $11,739,432 | 0.36% | 146,450 | Shares | 2026-08-07 | |
| Mega Russell Investments Group, Ltd. | $11,225,523 | 0.34% | 140,039 | Shares | 2026-08-06 | |
| Mega BNP PARIBAS ARBITRAGE, SA Non-US | $11,054,464 | 0.33% | 137,905 | Shares | 2026-08-13 | |
| Large MACKENZIE FINANCIAL CORP Registered adviser | $10,858,072 | 0.33% | 135,455 | Shares | 2026-08-13 | |
| Mega AMERIPRISE FINANCIAL INC Adviser | $10,095,028 | 0.31% | 125,936 | Shares | 2026-08-14 | |
| Mega JPMORGAN CHASE & CO Bank | $10,045,248 | 0.30% | 125,315 | Shares | 2026-08-12 | |
| Mega Clearbridge Investments, LLC Registered adviser | $9,813,828 | 0.30% | 122,428 | Shares | 2026-08-13 | |
| Mid Cambria Investment Management, L.P. Registered adviser | $9,508,899 | 0.29% | 118,624 | Shares | 2026-08-14 | |
| Mega Legal & General Group Plc | $7,837,883 | 0.24% | 97,778 | Shares | 2026-08-14 | |
| Mega FMR LLC Holding company | $7,740,809 | 0.23% | 96,567 | Shares | 2026-08-13 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $7,593,236 | 0.23% | 94,726 | Shares | 2026-08-14 | |
| Large NATIXIS Non-US | $7,547,865 | 0.23% | 94,160 | Shares | 2026-08-13 | |
| Mega California Public Employees Retirement System | $7,513,637 | 0.23% | 93,733 | Shares | 2026-08-14 | |
| Mega WELLS FARGO & COMPANY/MN Bank | $7,455,119 | 0.23% | 93,003 | Shares | 2026-08-14 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $7,334,640 | 0.22% | 91,500 | Put | 2026-08-14 | |
| Large CAPITOLIS LIQUID GLOBAL MARKETS LLC | $6,965,904 | 0.21% | 86,900 | Shares | 2026-08-13 | |
| Mega RHUMBLINE ADVISERS Registered adviser | $6,860,493 | 0.21% | 85,585 | Shares | 2026-08-12 | |
| Mega Swiss National Bank | $6,853,680 | 0.21% | 85,500 | Shares | 2026-08-11 | |
| Mega MILLENNIUM MANAGEMENT LLC Registered adviser | $6,703,460 | 0.20% | 83,626 | Shares | 2026-08-14 | |
| Large HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC Registered adviser | $6,655,284 | 0.20% | 83,025 | Shares | 2026-08-14 | |
| Large CAPITAL FUND MANAGEMENT S.A. | $6,521,817 | 0.20% | 81,360 | Shares | 2026-08-13 | |
| Mega ENVESTNET ASSET MANAGEMENT INC Registered adviser | $6,347,148 | 0.19% | 79,181 | Shares | 2026-09-23 | |
| Mega MANUFACTURERS LIFE INSURANCE COMPANY, THE | $6,299,052 | 0.19% | 78,581 | Shares | 2026-09-09 | |
| Large Trexquant Investment LP Registered adviser | $6,256,007 | 0.19% | 78,044 | Shares | 2026-08-14 | |
| Mega Amundi Holding company | $6,242,299 | 0.19% | 77,873 | Shares | 2026-08-11 | |
| Large TEACHER RETIREMENT SYSTEM OF TEXAS Benefit plan | $6,227,790 | 0.19% | 77,692 | Shares | 2026-08-14 | |
| Large Squarepoint Ops LLC Registered adviser | $6,079,494 | 0.18% | 75,842 | Shares | 2026-08-14 | |
| Large Bridgewater Associates, LP Registered adviser | $5,319,337 | 0.16% | 66,359 | Shares | 2026-08-14 | |
| Mega Nuveen, LLC | $5,241,501 | 0.16% | 65,388 | Shares | 2026-08-11 | |
| Large Point72 Asset Management, L.P. Registered adviser | $4,649,119 | 0.14% | 57,998 | Shares | 2026-08-14 | |
| Large STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM Benefit plan | $4,509,080 | 0.14% | 56,251 | Shares | 2026-08-10 | |
| Mega ALLIANCEBERNSTEIN L.P. Registered adviser | $4,450,002 | 0.13% | 55,514 | Shares | 2026-08-14 | |
| Mega STIFEL FINANCIAL CORP | $4,148,119 | 0.13% | 51,748 | Shares | 2026-08-12 | |
| Large Robeco Institutional Asset Management B.V. | $4,074,915 | 0.12% | 60,173 | Shares | 2026-10-20 | |
| Large Cerity Partners LLC Registered adviser | $3,990,203 | 0.12% | 49,778 | Shares | 2026-08-14 | |
| Mega CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Benefit plan | $3,862,750 | 0.12% | 48,188 | Shares | 2026-08-24 | |
| Mid Y-Intercept (Hong Kong) Ltd Exempt adviser | $3,641,236 | 0.11% | 53,769 | Shares | 2026-10-16 | |
| Mega HSBC HOLDINGS PLC | $3,631,728 | 0.11% | 45,306 | Shares | 2026-08-14 | |
| Mega VANGUARD ASSET MANAGEMENT, Ltd | $3,596,779 | 0.11% | 44,870 | Shares | 2026-08-13 | |
| Small TT Capital Management LLC Registered adviser | $3,433,471 | 0.10% | 50,701 | Shares | 2026-10-15 | |
| Mega PRICE T ROWE ASSOCIATES INC /MD/ Registered adviser | $3,336,980 | 0.10% | 41,629 | Shares | 2026-08-14 | |
| Mega SG Americas Securities, LLC | $3,269,806 | 0.10% | 40,791 | Shares | 2026-08-07 | |
| Small De Lisle Partners LLP Non-US | $3,184,035 | 0.10% | 39,721 | Shares | 2026-08-12 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $3,158,304 | 0.10% | 39,400 | Put | 2026-09-02 | |
| Mid Engineers Gate Manager LP | $2,961,350 | 0.09% | 36,943 | Shares | 2026-08-14 | |
| Large WEALTH ENHANCEMENT ADVISORY SERVICES, LLC | $2,912,975 | 0.09% | 43,015 | Shares | 2026-10-13 | |
| Mid Vest Financial, LLC Registered adviser | $2,903,156 | 0.09% | 42,870 | Shares | 2026-10-21 | |
| Large VIRGINIA RETIREMENT SYSTEMS ET Al | $2,817,624 | 0.09% | 35,150 | Shares | 2026-08-25 | |
| Large STATE OF WISCONSIN INVESTMENT BOARD Benefit plan | $2,816,742 | 0.09% | 35,139 | Shares | 2026-08-14 | |
| Small VELA Investment Management, LLC Registered adviser | $2,796,942 | 0.08% | 34,892 | Shares | 2026-08-27 | |
| Mid HARBOR CAPITAL ADVISORS, INC. Registered adviser | $2,781,552 | 0.08% | 34,700 | Shares | 2026-08-07 | |
| Mid EULAV Asset Management Registered adviser | $2,565,120 | 0.08% | 32,000 | Shares | 2026-07-29 | |
| Large BANK OF NOVA SCOTIA Bank | $2,224,840 | 0.07% | 27,755 | Shares | 2026-08-12 | |
| Large NEW YORK STATE COMMON RETIREMENT FUND | $2,220,672 | 0.07% | 27,703 | Shares | 2026-07-29 | |
| Mega JANE STREET GROUP, LLC | $2,212,416 | 0.07% | 27,600 | Call | 2026-08-14 |
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