ACGL Institutional Ownership & Shareholders
ARCH CAP GROUP LTD (ACGL) is currently held by 903 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $31.20B 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 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 $3.10B, representing an estimated gain of +5.60% 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
903
Total Reported Value
$31.20B
Largest Holder
Blackrock, Inc.
Largest Position
$2.93B
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
43
Funds Exiting Positions
1
| 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 | $3,097,622,058 | +$164,400,566 | +5.60% | |
| Vanguard Capital Management Llc | 0.05% | 22,221,428 | $2,156,811,802 | $2,277,696,370 | +$120,884,568 | +5.60% | |
| Artisan Partners Limited Partnership | 3.42% | 21,595,895 | $2,096,097,569 | $2,213,579,238 | +$117,481,669 | +5.60% | |
| State Street Corp | 0.05% | 16,251,212 | $1,577,342,637 | $1,665,749,230 | +$88,406,593 | +5.60% | |
| Bamco Inc | 2.31% | 15,872,450 | $1,540,579,997 | $1,626,926,125 | +$86,346,128 | +5.60% | |
| Vanguard Portfolio Management Llc | 0.06% | 14,527,363 | $1,410,025,853 | $1,489,054,708 | +$79,028,855 | +5.60% | |
| Wcm Investment Management, Llc | 2.13% | 11,973,574 | $1,174,128,712 | $1,227,291,335 | +$53,162,623 | +4.53% | |
| Banque Cantonale Vaudoise | 0.16% | 11,913 | $1,156,000,000 | $1,221,083 | -$1,154,778,918 | -99.89% | |
| Geode Capital Management, Llc | 0.05% | 10,507,722 | $1,016,291,520 | $1,077,041,505 | +$60,749,985 | +5.98% | |
| Jpmorgan Chase & Co | 0.04% | 6,991,580 | $685,594,544 | $716,636,950 | +$31,042,406 | +4.53% | |
| Invesco Ltd. | 0.04% | 4,947,084 | $480,163,972 | $507,076,110 | +$26,912,138 | +5.60% | |
| Norges Bank | 0.05% | 4,675,717 | $453,825,092 | $479,260,993 | +$25,435,901 | +5.60% | |
| Arrowstreet Capital, Limited Partnership | 0.19% | 4,493,790 | $436,167,257 | $460,613,475 | +$24,446,218 | +5.60% | |
| Morgan Stanley | 0.02% | 4,359,144 | $423,098,695 | $446,812,260 | +$23,713,565 | +5.60% | |
| Northern Trust Corp | 0.05% | 4,281,588 | $415,570,933 | $438,862,770 | +$23,291,837 | +5.60% | |
| Dimensional Fund Advisors Lp | 0.07% | 4,218,184 | $409,450,765 | $432,363,860 | +$22,913,095 | +5.60% | |
| Allspring Global Investments Holdings, Llc | 0.63% | 4,139,902 | $407,987,293 | $424,339,955 | +$16,352,662 | +4.01% | |
| Madison Asset Management, Llc | 4.40% | 3,799,789 | $368,807,502 | $389,478,373 | +$20,670,871 | +5.60% | |
| Royal Bank Of Canada | 0.06% | 3,495,371 | $339,260,000 | $358,275,528 | +$19,015,528 | +5.61% | |
| Marshfield Associates | 7.58% | 3,331,135 | $323,319,956 | $341,441,338 | +$18,121,382 | +5.60% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.06% | 3,179,752 | $305,224,395 | $325,924,580 | +$20,700,185 | +6.78% | |
| Legal & General Group Plc | 0.06% | 3,119,937 | $302,821,087 | $319,793,543 | +$16,972,456 | +5.60% | |
| Goldman Sachs Group Inc | 0.03% | 3,015,755 | $292,709,177 | $309,114,888 | +$16,405,711 | +5.60% | |
| Polar Capital Holdings Plc | 0.82% | 2,980,000 | $289,238,800 | $305,450,000 | +$16,211,200 | +5.60% | |
| Principal Financial Group Inc | 0.14% | 2,868,362 | $278,406,471 | $294,007,105 | +$15,600,634 | +5.60% | |
| High Ground Investment Management Llp | 22.27% | 2,612,372 | $253,556,826 | $267,768,130 | +$14,211,304 | +5.60% | |
| Natixis Advisors, Llc | 0.27% | 2,451,945 | $237,985,000 | $251,324,363 | +$13,339,363 | +5.61% | |
| Jones Financial Companies Lllp | 0.09% | 2,269,585 | $221,374,816 | $232,632,463 | +$11,257,647 | +5.09% | |
| Envestnet Asset Management Inc | 0.05% | 2,200,819 | $213,611,469 | $225,583,948 | +$11,972,479 | +5.60% | |
| Charles Schwab Investment Management Inc | 0.03% | 2,177,713 | $211,368,824 | $223,215,583 | +$11,846,759 | +5.60% | |
| Boston Partners | 0.19% | 2,156,551 | $209,342,064 | $221,046,478 | +$11,704,414 | +5.59% | |
| Robeco Institutional Asset Management B.V. | 0.25% | 2,259,582 | $208,694,995 | $231,607,155 | +$22,912,160 | +10.98% | |
| Vanguard Fiduciary Trust Co | 0.04% | 1,940,803 | $188,374,339 | $198,932,308 | +$10,557,969 | +5.60% | |
| Sei Investments Co | 0.16% | 1,839,517 | $178,544,764 | $188,550,493 | +$10,005,729 | +5.60% | |
| Swedbank Ab | 0.15% | 1,913,884 | $176,766,327 | $196,173,110 | +$19,406,783 | +10.98% | |
| Nuveen, Llc | 0.04% | 1,775,060 | $172,287,243 | $181,943,650 | +$9,656,407 | +5.60% | |
| Cooke & Bieler Lp | 2.66% | 1,831,651 | $169,171,286 | $187,744,228 | +$18,572,942 | +10.98% | |
| Gqg Partners Llc | 0.31% | 1,717,256 | $166,676,867 | $176,018,740 | +$9,341,873 | +5.60% | |
| Bank Of New York Mellon Corp | 0.03% | 1,593,928 | $154,706,543 | $163,377,620 | +$8,671,077 | +5.60% | |
| Fmr Llc | 0.01% | 1,582,311 | $153,579,037 | $162,186,878 | +$8,607,841 | +5.60% | |
| Brandes Investment Partners, Lp | 1.03% | 1,518,218 | $147,359,429 | $155,617,345 | +$8,257,916 | +5.60% | |
| Thrivent Financial For Lutherans | 0.25% | 1,507,929 | $146,360,000 | $154,562,723 | +$8,202,723 | +5.60% | |
| Bank Of America Corp | 0.01% | 1,500,979 | $145,685,022 | $153,850,348 | +$8,165,326 | +5.60% | |
| Hsbc Holdings Plc | 0.07% | 1,442,557 | $140,538,881 | $147,862,093 | +$7,323,212 | +5.21% | |
| Deutsche Bank Ag\ | 0.04% | 1,439,416 | $139,709,717 | $147,540,140 | +$7,830,423 | +5.60% | |
| American Century Companies Inc | 0.06% | 1,364,898 | $132,477,130 | $139,902,045 | +$7,424,915 | +5.60% | |
| Aqr Capital Management Llc | 0.05% | 1,353,793 | $131,399,169 | $138,763,783 | +$7,364,614 | +5.60% | |
| Ubs Group Ag | 0.02% | 1,350,323 | $131,062,351 | $138,408,108 | +$7,345,757 | +5.60% | |
| Bnp Paribas Asset Management Holding S.A. | 0.12% | 1,237,549 | $120,116,506 | $126,848,773 | +$6,732,267 | +5.60% | |
| Fiduciary Management Inc | 1.69% | 1,225,226 | $118,920,436 | $125,585,665 | +$6,665,229 | +5.60% |
Frequently asked questions about ACGL
Who are the largest institutional holders of ACGL?
The largest institutional holders of ACGL reported in the latest SEC Form 13F filings include Blackrock, Inc., Vanguard Capital Management Llc, Artisan Partners Limited Partnership, State Street Corp, and Bamco Inc. InsiderSet ranks institutional holders by their latest reported ACGL position.
What is ACGL institutional ownership?
This page tracks ACGL positions reported by institutional investment managers through SEC Form 13F. ARCH CAP GROUP LTD (ACGL) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own ACGL?
InsiderSet currently tracks 903 institutional managers reporting ACGL 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 ACGL shareholders.
How much ACGL stock do institutions own?
Institutional investment managers disclosed approximately $31.20B in ACGL holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was ACGL institutional ownership last updated?
The latest ACGL 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 ACGL 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 ACGL position after the reporting date.
Are institutions buying or selling ACGL?
Institutional buying and selling can be analyzed by comparing ACGL positions across consecutive 13F reporting periods. InsiderSet's ACGL Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View ACGL ownership changes.
How has ACGL institutional ownership changed over time?
InsiderSet tracks ACGL institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.