ASSURED GUARANTY LTD (AGO) Institutional Shareholders
ASSURED GUARANTY LTD (AGO) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $3.29B in AGO holdings during the latest filing period.
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 $411.38M, representing an estimated loss of -11.33% 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
357
Total Reported Value
$3.29B
Largest Holder
Blackrock, Inc.
Largest Position
$463.93M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
47
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 | $411,375,642 | -$52,550,531 | -11.33% | |
| Vanguard Portfolio Management Llc | 0.01% | 3,965,491 | $317,873,759 | $281,867,100 | -$36,006,659 | -11.33% | |
| Dimensional Fund Advisors Lp | 0.04% | 3,027,991 | $242,724,196 | $215,229,600 | -$27,494,596 | -11.33% | |
| Vanguard Capital Management Llc | 0.00% | 1,916,655 | $153,639,065 | $136,235,837 | -$17,403,228 | -11.33% | |
| State Street Corp | 0.00% | 1,586,416 | $127,167,107 | $112,762,449 | -$14,404,658 | -11.33% | |
| First Trust Advisors Lp | 0.07% | 1,518,088 | $121,689,912 | $107,905,695 | -$13,784,217 | -11.33% | |
| American Century Companies Inc | 0.05% | 1,403,093 | $112,471,935 | $99,731,850 | -$12,740,085 | -11.33% | |
| Aqr Capital Management Llc | 0.04% | 1,395,148 | $111,667,632 | $99,167,120 | -$12,500,512 | -11.19% | |
| Reinhart Partners, Llc. | 2.28% | 1,246,181 | $99,895,083 | $88,578,545 | -$11,316,538 | -11.33% | |
| River Road Asset Management, Llc | 1.03% | 1,160,270 | $93,007,243 | $82,471,992 | -$10,535,251 | -11.33% | |
| Royce & Associates Lp | 0.68% | 1,060,397 | $84,922,532 | $75,373,019 | -$9,549,513 | -11.24% | |
| Fuller & Thaler Asset Management, Inc. | 0.18% | 820,652 | $65,783,486 | $58,331,944 | -$7,451,542 | -11.33% | |
| Principal Financial Group Inc | 0.03% | 754,859 | $60,513,938 | $53,655,378 | -$6,858,560 | -11.33% | |
| Gendell Jeffrey L | 0.53% | 726,136 | $58,207,061 | $51,613,747 | -$6,593,314 | -11.33% | |
| Geode Capital Management, Llc | 0.00% | 716,703 | $57,463,923 | $50,943,249 | -$6,520,674 | -11.35% | |
| Morgan Stanley | 0.00% | 594,406 | $47,647,681 | $42,250,378 | -$5,397,303 | -11.33% | |
| Goldman Sachs Group Inc | 0.00% | 573,964 | $46,008,998 | $40,797,361 | -$5,211,637 | -11.33% | |
| Norges Bank | 0.00% | 537,845 | $43,113,655 | $38,230,023 | -$4,883,632 | -11.33% | |
| Boston Partners | 0.03% | 486,458 | $39,154,679 | $34,577,435 | -$4,577,244 | -11.69% | |
| Northern Trust Corp | 0.00% | 444,566 | $35,636,411 | $31,599,751 | -$4,036,660 | -11.33% | |
| Brown Advisory Inc | 0.05% | 415,675 | $33,320,450 | $29,546,179 | -$3,774,271 | -11.33% | |
| Quantinno Capital Management Lp | 0.04% | 400,665 | $32,117,380 | $28,479,268 | -$3,638,112 | -11.33% | |
| Charles Schwab Investment Management Inc | 0.00% | 386,385 | $30,972,622 | $27,464,246 | -$3,508,376 | -11.33% | |
| Long Focus Capital Management, Llc | 1.24% | 380,000 | $30,460,800 | $27,010,400 | -$3,450,400 | -11.33% | |
| Bank Of America Corp | 0.00% | 375,596 | $30,107,761 | $26,697,364 | -$3,410,397 | -11.33% | |
| Arrowstreet Capital, Limited Partnership | 0.01% | 300,592 | $24,095,455 | $21,366,079 | -$2,729,376 | -11.33% | |
| Bank Of New York Mellon Corp | 0.00% | 287,238 | $23,024,992 | $20,416,877 | -$2,608,115 | -11.33% | |
| Wellington Management Group Llp | 0.00% | 283,634 | $22,736,101 | $20,160,705 | -$2,575,396 | -11.33% | |
| Qube Research & Technologies Ltd | 0.02% | 273,216 | $21,900,995 | $19,420,193 | -$2,480,802 | -11.33% | |
| Vanguard Fiduciary Trust Co | 0.00% | 264,553 | $21,206,568 | $18,804,427 | -$2,402,141 | -11.33% | |
| Pine Valley Investments Ltd Liability Co | 0.86% | 253,136 | $20,291,379 | $17,992,907 | -$2,298,472 | -11.33% | |
| Gotham Asset Management, Llc | 0.05% | 249,502 | $20,000,080 | $17,734,602 | -$2,265,478 | -11.33% | |
| Two Sigma Investments, Lp | 0.01% | 233,321 | $18,703,011 | $16,584,457 | -$2,118,554 | -11.33% | |
| Raymond James Financial Inc | 0.00% | 216,103 | $17,322,779 | $15,360,601 | -$1,962,178 | -11.33% | |
| Barclays Plc | 0.01% | 200,526 | $16,074,164 | $14,253,388 | -$1,820,776 | -11.33% | |
| Ubs Group Ag | 0.00% | 190,307 | $15,255,009 | $13,527,022 | -$1,727,987 | -11.33% | |
| Hrt Financial Lp | 0.03% | 180,291 | $14,452,000 | $12,815,084 | -$1,636,916 | -11.33% | |
| D. E. Shaw & Co., Inc. | 0.01% | 180,107 | $14,437,377 | $12,802,006 | -$1,635,371 | -11.33% | |
| Public Sector Pension Investment Board | 0.04% | 179,588 | $14,395,774 | $12,765,115 | -$1,630,659 | -11.33% | |
| Allianz Asset Management Gmbh | 0.01% | 171,576 | $13,753,533 | $12,195,622 | -$1,557,911 | -11.33% | |
| Citadel Advisors Llc | 0.01% | 168,908 | $13,539,665 | $12,005,981 | -$1,533,684 | -11.33% | |
| Man Group Plc | 0.02% | 167,649 | $13,438,744 | $11,916,491 | -$1,522,253 | -11.33% | |
| Invesco Ltd. | 0.00% | 163,380 | $13,096,540 | $11,613,050 | -$1,483,490 | -11.33% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.00% | 145,519 | $11,856,889 | $10,343,491 | -$1,513,398 | -12.76% | |
| Lri Investments, Llc | 0.95% | 147,309 | $11,808,289 | $10,470,724 | -$1,337,565 | -11.33% | |
| Victory Capital Management Inc | 0.01% | 146,450 | $11,739,432 | $10,409,666 | -$1,329,766 | -11.33% | |
| Russell Investments Group, Ltd. | 0.01% | 140,039 | $11,225,608 | $9,953,972 | -$1,271,636 | -11.33% | |
| Bnp Paribas Financial Markets | 0.01% | 137,905 | $11,054,465 | $9,802,287 | -$1,252,178 | -11.33% | |
| Mackenzie Financial Corp | 0.01% | 135,455 | $10,858,073 | $9,628,141 | -$1,229,932 | -11.33% | |
| Jpmorgan Chase & Co | 0.00% | 125,315 | $10,208,405 | $8,907,390 | -$1,301,015 | -12.74% |
Frequently asked questions about AGO
Who owns the most AGO stock?
The largest holders of AGO are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for ASSURED GUARANTY LTD (AGO).
Is AGO widely held by superinvestors?
Many widely followed stocks like AGO appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly AGO is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.