AGO Institutional Ownership & Shareholders
ASSURED GUARANTY LTD (AGO) is currently held by 356 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $3.26B based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of AGO tracked by InsiderSet, reporting ownership valued at approximately $463.93M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $407.90M, representing an estimated loss of -12.08% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 56% of the total disclosed AGO value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Vanguard Portfolio Management Llc, Dimensional Fund Advisors Lp, and several other long-term asset managers with concentrated positions in ASSURED GUARANTY LTD (AGO).
This page ranks the largest institutional AGO shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
356
Total Reported Value
$3.26B
Largest Holder
Blackrock, Inc.
Largest Position
$463.93M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
42
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.01% | 5,787,502 | $463,926,173 | $407,903,141 | -$56,023,032 | -12.08% | |
| Vanguard Portfolio Management Llc | 0.01% | 3,965,491 | $317,873,759 | $279,487,806 | -$38,385,953 | -12.08% | |
| Dimensional Fund Advisors Lp | 0.04% | 3,027,991 | $242,724,196 | $213,412,806 | -$29,311,390 | -12.08% | |
| Vanguard Capital Management Llc | 0.00% | 1,916,655 | $153,639,065 | $135,085,844 | -$18,553,221 | -12.08% | |
| State Street Corp | 0.00% | 1,586,416 | $127,167,107 | $111,810,600 | -$15,356,507 | -12.08% | |
| First Trust Advisors Lp | 0.07% | 1,518,088 | $121,689,912 | $106,994,842 | -$14,695,070 | -12.08% | |
| American Century Companies Inc | 0.05% | 1,403,093 | $112,471,935 | $98,889,995 | -$13,581,940 | -12.08% | |
| Aqr Capital Management Llc | 0.04% | 1,395,148 | $111,667,632 | $98,330,031 | -$13,337,601 | -11.94% | |
| River Road Asset Management, Llc | 1.03% | 1,160,270 | $93,007,243 | $81,775,830 | -$11,231,413 | -12.08% | |
| Royce & Associates Lp | 0.68% | 1,060,397 | $84,922,532 | $74,736,781 | -$10,185,751 | -11.99% | |
| Reinhart Partners, Llc. | 1.96% | 1,188,700 | $80,498,764 | $83,779,576 | +$3,280,812 | +4.08% | |
| Fuller & Thaler Asset Management, Inc. | 0.18% | 820,652 | $65,783,486 | $57,839,553 | -$7,943,933 | -12.08% | |
| Gendell Jeffrey L | 0.53% | 726,136 | $58,207,061 | $51,178,065 | -$7,028,996 | -12.08% | |
| Geode Capital Management, Llc | 0.00% | 716,703 | $57,463,923 | $50,513,227 | -$6,950,696 | -12.10% | |
| Morgan Stanley | 0.00% | 594,406 | $47,647,681 | $41,893,735 | -$5,753,946 | -12.08% | |
| Principal Financial Group Inc | 0.02% | 688,206 | $46,607,373 | $48,504,759 | +$1,897,386 | +4.07% | |
| Goldman Sachs Group Inc | 0.00% | 573,964 | $46,008,998 | $40,452,983 | -$5,556,015 | -12.08% | |
| Norges Bank | 0.00% | 537,845 | $43,113,655 | $37,907,316 | -$5,206,339 | -12.08% | |
| Boston Partners | 0.03% | 486,458 | $39,154,679 | $34,285,560 | -$4,869,119 | -12.44% | |
| Northern Trust Corp | 0.00% | 444,566 | $35,636,411 | $31,333,012 | -$4,303,399 | -12.08% | |
| Brown Advisory Inc | 0.05% | 415,675 | $33,320,450 | $29,296,774 | -$4,023,676 | -12.08% | |
| Quantinno Capital Management Lp | 0.04% | 400,665 | $32,117,380 | $28,238,869 | -$3,878,511 | -12.08% | |
| Charles Schwab Investment Management Inc | 0.00% | 386,385 | $30,972,622 | $27,232,415 | -$3,740,207 | -12.08% | |
| Long Focus Capital Management, Llc | 1.24% | 380,000 | $30,460,800 | $26,782,400 | -$3,678,400 | -12.08% | |
| Bank Of America Corp | 0.00% | 375,596 | $30,107,761 | $26,472,006 | -$3,635,755 | -12.08% | |
| Arrowstreet Capital, Limited Partnership | 0.01% | 300,592 | $24,095,455 | $21,185,724 | -$2,909,731 | -12.08% | |
| Bank Of New York Mellon Corp | 0.00% | 287,238 | $23,024,992 | $20,244,534 | -$2,780,458 | -12.08% | |
| Wellington Management Group Llp | 0.00% | 283,634 | $22,736,101 | $19,990,524 | -$2,745,577 | -12.08% | |
| Qube Research & Technologies Ltd | 0.02% | 273,216 | $21,900,995 | $19,256,264 | -$2,644,731 | -12.08% | |
| Vanguard Fiduciary Trust Co | 0.00% | 264,553 | $21,206,568 | $18,645,695 | -$2,560,873 | -12.08% | |
| Pine Valley Investments Ltd Liability Co | 0.86% | 253,136 | $20,291,379 | $17,841,025 | -$2,450,354 | -12.08% | |
| Gotham Asset Management, Llc | 0.05% | 249,502 | $20,000,080 | $17,584,901 | -$2,415,179 | -12.08% | |
| Two Sigma Investments, Lp | 0.01% | 233,321 | $18,703,011 | $16,444,464 | -$2,258,547 | -12.08% | |
| Raymond James Financial Inc | 0.00% | 216,103 | $17,322,779 | $15,230,939 | -$2,091,840 | -12.08% | |
| Barclays Plc | 0.01% | 200,526 | $16,074,164 | $14,133,072 | -$1,941,092 | -12.08% | |
| Ubs Group Ag | 0.00% | 190,307 | $15,255,009 | $13,412,837 | -$1,842,172 | -12.08% | |
| Hrt Financial Lp | 0.03% | 180,291 | $14,452,000 | $12,706,910 | -$1,745,090 | -12.08% | |
| D. E. Shaw & Co., Inc. | 0.01% | 180,107 | $14,437,377 | $12,693,941 | -$1,743,436 | -12.08% | |
| Public Sector Pension Investment Board | 0.04% | 179,588 | $14,395,774 | $12,657,362 | -$1,738,412 | -12.08% | |
| Allianz Asset Management Gmbh | 0.01% | 171,576 | $13,753,533 | $12,092,676 | -$1,660,857 | -12.08% | |
| Citadel Advisors Llc | 0.01% | 168,908 | $13,539,665 | $11,904,636 | -$1,635,029 | -12.08% | |
| Man Group Plc | 0.02% | 167,649 | $13,438,744 | $11,815,902 | -$1,622,842 | -12.08% | |
| Invesco Ltd. | 0.00% | 163,380 | $13,096,540 | $11,515,022 | -$1,581,518 | -12.08% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.00% | 145,519 | $11,856,889 | $10,256,179 | -$1,600,710 | -13.50% | |
| Lri Investments, Llc | 0.95% | 147,309 | $11,808,289 | $10,382,338 | -$1,425,951 | -12.08% | |
| Victory Capital Management Inc | 0.01% | 146,450 | $11,739,432 | $10,321,796 | -$1,417,636 | -12.08% | |
| Russell Investments Group, Ltd. | 0.01% | 140,039 | $11,225,608 | $9,869,949 | -$1,355,659 | -12.08% | |
| Bnp Paribas Financial Markets | 0.01% | 137,905 | $11,054,465 | $9,719,544 | -$1,334,921 | -12.08% | |
| Jpmorgan Chase & Co | 0.00% | 125,315 | $10,208,405 | $8,832,201 | -$1,376,204 | -13.48% | |
| Ameriprise Financial Inc | 0.00% | 125,936 | $10,095,040 | $8,875,969 | -$1,219,071 | -12.08% |
Frequently asked questions about AGO
Who are the largest institutional holders of AGO?
The largest institutional holders of AGO reported in the latest SEC Form 13F filings include Blackrock, Inc., Vanguard Portfolio Management Llc, Dimensional Fund Advisors Lp, Vanguard Capital Management Llc, and State Street Corp. InsiderSet ranks institutional holders by their latest reported AGO position.
What is AGO institutional ownership?
This page tracks AGO positions reported by institutional investment managers through SEC Form 13F. ASSURED GUARANTY LTD (AGO) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own AGO?
InsiderSet currently tracks 356 institutional managers reporting AGO holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of AGO shareholders.
How much AGO stock do institutions own?
Institutional investment managers disclosed approximately $3.26B in AGO holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was AGO institutional ownership last updated?
The latest AGO institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional AGO holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its AGO position after the reporting date.
Are institutions buying or selling AGO?
Institutional buying and selling can be analyzed by comparing AGO positions across consecutive 13F reporting periods. InsiderSet's AGO Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View AGO ownership changes.
How has AGO institutional ownership changed over time?
InsiderSet tracks AGO institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.