ARCH CAP GROUP LTD (ACGL) Institutional Shareholders
ARCH CAP GROUP LTD (ACGL) 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 $31.69B in ACGL holdings during the latest filing period.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of ACGL tracked by InsiderSet, reporting ownership valued at approximately $2.93B 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 $2.90B, representing an estimated loss of -1.00% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 50% of the total disclosed ACGL value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Vanguard Capital Management Llc, Artisan Partners Limited Partnership, and several other long-term asset managers with concentrated positions in ARCH CAP GROUP LTD (ACGL).
This page ranks the largest institutional ACGL 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
890
Total Reported Value
$31.69B
Largest Holder
Blackrock, Inc.
Largest Position
$2.93B
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. | 0.04% | 30,220,703 | $2,933,221,492 | $2,903,907,351 | -$29,314,141 | -1.00% | |
| Vanguard Capital Management Llc | 0.05% | 22,221,428 | $2,156,811,802 | $2,135,257,017 | -$21,554,785 | -1.00% | |
| Artisan Partners Limited Partnership | 3.42% | 21,595,895 | $2,096,097,569 | $2,075,149,551 | -$20,948,018 | -1.00% | |
| State Street Corp | 0.05% | 16,251,212 | $1,577,342,637 | $1,561,578,961 | -$15,763,676 | -1.00% | |
| Bamco Inc | 2.31% | 15,872,450 | $1,540,579,997 | $1,525,183,721 | -$15,396,277 | -1.00% | |
| Vanguard Portfolio Management Llc | 0.06% | 14,527,363 | $1,410,025,853 | $1,395,934,311 | -$14,091,542 | -1.00% | |
| Wcm Investment Management, Llc | 2.13% | 11,973,574 | $1,174,128,712 | $1,150,540,726 | -$23,587,986 | -2.01% | |
| Banque Cantonale Vaudoise | 0.16% | 11,913 | $1,156,000,000 | $1,144,720 | -$1,154,855,280 | -99.90% | |
| Geode Capital Management, Llc | 0.05% | 10,507,722 | $1,016,291,520 | $1,009,687,007 | -$6,604,513 | -0.65% | |
| Jpmorgan Chase & Co | 0.04% | 6,991,580 | $685,594,544 | $671,820,922 | -$13,773,622 | -2.01% | |
| Invesco Ltd. | 0.04% | 4,947,084 | $480,163,972 | $475,365,302 | -$4,798,670 | -1.00% | |
| Norges Bank | 0.05% | 4,675,717 | $453,825,092 | $449,289,647 | -$4,535,445 | -1.00% | |
| Arrowstreet Capital, Limited Partnership | 0.19% | 4,493,790 | $436,167,257 | $431,808,281 | -$4,358,976 | -1.00% | |
| Morgan Stanley | 0.02% | 4,359,144 | $423,098,695 | $418,870,147 | -$4,228,548 | -1.00% | |
| Northern Trust Corp | 0.05% | 4,281,588 | $415,570,933 | $411,417,791 | -$4,153,142 | -1.00% | |
| Dimensional Fund Advisors Lp | 0.07% | 4,218,184 | $409,450,765 | $405,325,301 | -$4,125,464 | -1.01% | |
| Allspring Global Investments Holdings, Llc | 0.63% | 4,139,902 | $407,987,293 | $397,803,183 | -$10,184,110 | -2.50% | |
| Madison Asset Management, Llc | 4.40% | 3,799,789 | $368,807,502 | $365,121,725 | -$3,685,777 | -1.00% | |
| Royal Bank Of Canada | 0.06% | 3,495,371 | $339,260,000 | $335,870,199 | -$3,389,801 | -1.00% | |
| Marshfield Associates | 7.58% | 3,331,135 | $323,319,956 | $320,088,762 | -$3,231,194 | -1.00% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.06% | 3,179,752 | $305,224,395 | $305,542,370 | +$317,975 | +0.10% | |
| Legal & General Group Plc | 0.06% | 3,119,937 | $302,821,087 | $299,794,746 | -$3,026,341 | -1.00% | |
| Goldman Sachs Group Inc | 0.03% | 3,015,755 | $292,709,177 | $289,783,898 | -$2,925,279 | -1.00% | |
| Polar Capital Holdings Plc | 0.82% | 2,980,000 | $289,238,800 | $286,348,200 | -$2,890,600 | -1.00% | |
| Principal Financial Group Inc | 0.14% | 2,868,362 | $278,406,471 | $275,620,905 | -$2,785,566 | -1.00% | |
| High Ground Investment Management Llp | 22.27% | 2,612,372 | $253,556,826 | $251,022,825 | -$2,534,001 | -1.00% | |
| Natixis Advisors, Llc | 0.27% | 2,451,945 | $237,985,000 | $235,607,395 | -$2,377,605 | -1.00% | |
| Jones Financial Companies Lllp | 0.09% | 2,269,585 | $221,374,816 | $218,084,423 | -$3,290,393 | -1.49% | |
| Cooke & Bieler Lp | 2.49% | 2,219,448 | $215,419,623 | $213,266,758 | -$2,152,865 | -1.00% | |
| Envestnet Asset Management Inc | 0.05% | 2,200,819 | $213,611,469 | $211,476,698 | -$2,134,771 | -1.00% | |
| Charles Schwab Investment Management Inc | 0.03% | 2,177,713 | $211,368,824 | $209,256,442 | -$2,112,382 | -1.00% | |
| Sixth Street Partners Management Company, L.P. | 0.03% | 2,177,713 | $211,368,824 | $209,256,442 | -$2,112,382 | -1.00% | |
| Boston Partners | 0.19% | 2,156,551 | $209,342,064 | $207,222,986 | -$2,119,078 | -1.01% | |
| Robeco Institutional Asset Management B.V. | 0.24% | 2,048,973 | $198,873,318 | $196,885,816 | -$1,987,502 | -1.00% | |
| Vanguard Fiduciary Trust Co | 0.04% | 1,940,803 | $188,374,339 | $186,491,760 | -$1,882,579 | -1.00% | |
| Swedbank Ab | 0.16% | 1,888,385 | $183,286,648 | $181,454,915 | -$1,831,733 | -1.00% | |
| Sei Investments Co | 0.16% | 1,839,517 | $178,544,764 | $176,759,189 | -$1,785,575 | -1.00% | |
| Nuveen, Llc | 0.04% | 1,775,060 | $172,287,243 | $170,565,515 | -$1,721,728 | -1.00% | |
| Gqg Partners Llc | 0.31% | 1,717,256 | $166,676,867 | $165,011,129 | -$1,665,738 | -1.00% | |
| Bank Of New York Mellon Corp | 0.03% | 1,593,928 | $154,706,543 | $153,160,542 | -$1,546,001 | -1.00% | |
| Fmr Llc | 0.01% | 1,582,311 | $153,579,037 | $152,044,264 | -$1,534,773 | -1.00% | |
| Brandes Investment Partners, Lp | 1.03% | 1,518,218 | $147,359,429 | $145,885,568 | -$1,473,861 | -1.00% | |
| Thrivent Financial For Lutherans | 0.25% | 1,507,929 | $146,360,000 | $144,896,898 | -$1,463,102 | -1.00% | |
| Bank Of America Corp | 0.01% | 1,500,979 | $145,685,022 | $144,229,072 | -$1,455,950 | -1.00% | |
| Hsbc Holdings Plc | 0.07% | 1,442,557 | $140,538,881 | $138,615,302 | -$1,923,579 | -1.37% | |
| Deutsche Bank Ag\ | 0.04% | 1,439,416 | $139,709,717 | $138,313,483 | -$1,396,234 | -1.00% | |
| American Century Companies Inc | 0.06% | 1,364,898 | $132,477,130 | $131,153,049 | -$1,324,081 | -1.00% | |
| Aqr Capital Management Llc | 0.05% | 1,353,793 | $131,399,169 | $130,085,969 | -$1,313,200 | -1.00% | |
| Ubs Group Ag | 0.02% | 1,350,323 | $131,062,351 | $129,752,537 | -$1,309,814 | -1.00% | |
| Bnp Paribas Asset Management Holding S.A. | 0.12% | 1,237,549 | $120,116,506 | $118,916,083 | -$1,200,423 | -1.00% |
Frequently asked questions about ACGL
Who owns the most ACGL stock?
The largest holders of ACGL 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 ARCH CAP GROUP LTD (ACGL).
Is ACGL widely held by superinvestors?
Many widely followed stocks like ACGL appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly ACGL 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.