Latest Period
Q4 2025
Security Snapshot
ARCH CAPITAL GROUP LTD. - Common Stock (ACGL) Institutional Ownership
CUSIP: G0450A105
13F Institutional Holders and Ownership History from Q1 2014 to Q1 2026
Institutions Reporting
912
Shares (Excl. Options)
324,865,709
Price
$95.92
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- Type / Class
- Equity / Common Stock
- Symbol
- ACGL on Nasdaq
- Shares outstanding
- 356,621,255
- Price per share
- $97.10
- All holders as of 31 Dec 2025
- Q4 2025
- Total 13F shares
- 324,865,709
- Total reported value
- $31,155,460,136
- % of total 13F portfolios
- 0.02%
- Share change
- -1,843,553
- Value change
- -$153,583,870
- Number of holders
- 912
- Price from insider filings
- $97.10
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors
Quick Takeaways
- ACGL - ARCH CAPITAL GROUP LTD. - Common Stock is tracked under CUSIP G0450A105.
- 912 institutions reported positions in Q4 2025.
- 2 significant owners is listed from Schedule 13D/13G reporting.
What Changed
- Holder count moved from 912 to 322 between Q4 2025 and Q1 2026.
- Reported value moved from $31,155,460,136 to $1,682,388,031.
Why This Matters
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Source Evidence
Source: SEC Form 13F
Open SEC Evidence
Latest holder context comes from 912 institutions filings for Q4 2025.
Investment Quick Answers
What is CUSIP G0450A105?
CUSIP G0450A105 identifies ACGL - ARCH CAPITAL GROUP LTD. - Common Stock in SEC 13F datasets.
Where can I see the latest institutional holders?
Review the Q4 2025 holders report and the ownership history table below.
Next ownership checks
Use the next link that matches the question you still need to answer about this security.
- Latest 13F filings when you want to inspect fresh institutional portfolio moves.
- Latest Schedule 13D/13G reports when you need large-owner changes outside the 13F cycle.
- All institutional ownership pages to compare this security with other holder-history pages.
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP G0450A105:
Significant Owners of ARCH CAPITAL GROUP LTD. - Common Stock (ACGL) based on Schedule 13D/G filings
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC | 7.3% | $2,509,211,045 | 26,140,338 | Vanguard Capital Management | 31 Mar 2026 | |||
| BAMCO INC /NY/ | 5% | -9.2% | $1,677,154,966 | -$255,277,320 | 17,987,505 | -13% | Baron Capital Group, Inc. | 31 Dec 2025 |
As of 31 Dec 2025, 912 institutional investors reported holding 324,865,709 shares of ARCH CAPITAL GROUP LTD. - Common Stock (ACGL). This represents 91% of the company’s total 356,621,255 outstanding shares.
Top 25 Institutional Shareholders
The largest institutional shareholders of ARCH CAPITAL GROUP LTD. - Common Stock (ACGL) together control 62% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| VANGUARD GROUP INC | 12% | 41,288,784 | -2.4% | 0.06% | $3,960,420,161 |
| BlackRock, Inc. | 8.9% | 31,735,316 | -2.2% | 0.05% | $3,044,051,523 |
| Artisan Partners Limited Partnership | 6.5% | 23,247,700 | -1.7% | 3.4% | $2,229,919,384 |
| BAMCO INC /NY/ | 5% | 17,987,505 | -4.1% | 4.7% | $1,725,361,480 |
| STATE STREET CORP | 4.6% | 16,451,086 | -1.9% | 0.05% | $1,577,988,169 |
| WCM INVESTMENT MANAGEMENT, LLC | 3.7% | 13,283,915 | -1.8% | 2.6% | $1,284,023,269 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.9% | 10,466,550 | -2.1% | 0.06% | $1,000,365,447 |
| JPMORGAN CHASE & CO | 1.9% | 6,741,396 | -18% | 0.04% | $646,634,841 |
| NORGES BANK | 1.4% | 4,829,107 | 0.05% | $463,207,943 | |
| NORTHERN TRUST CORP | 1.3% | 4,634,323 | -4.9% | 0.06% | $444,524,262 |
| PRINCIPAL FINANCIAL GROUP INC | 1.3% | 4,528,160 | -12% | 0.22% | $434,344,976 |
| Madison Asset Management, LLC | 1.2% | 4,332,431 | -8% | 4.8% | $415,566,746 |
| MORGAN STANLEY | 1.2% | 4,289,082 | +0.78% | 0.02% | $411,408,950 |
| DIMENSIONAL FUND ADVISORS LP | 1.1% | 4,055,956 | -1.9% | 0.08% | $389,071,655 |
| Invesco Ltd. | 1.1% | 3,861,473 | -5% | 0.06% | $370,392,490 |
| Allspring Global Investments Holdings, LLC | 1% | 3,665,969 | -2.8% | 0.56% | $344,087,851 |
| ROYAL BANK OF CANADA | 0.95% | 3,373,663 | -11% | 0.06% | $323,600,000 |
| Polar Capital Holdings Plc | 0.93% | 3,330,000 | -1.5% | 1.5% | $319,413,600 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.88% | 3,140,590 | -5.7% | 0.06% | $301,245,392 |
| GOLDMAN SACHS GROUP INC | 0.83% | 2,950,322 | +5.8% | 0.04% | $282,994,857 |
| Legal & General Group Plc | 0.83% | 2,944,169 | +4.3% | 0.06% | $282,404,686 |
| MARSHFIELD ASSOCIATES | 0.81% | 2,887,002 | +6% | 4.9% | $276,921,224 |
| AQR CAPITAL MANAGEMENT LLC | 0.75% | 2,670,628 | +184% | 0.13% | $256,166,675 |
| COOKE & BIELER LP | 0.74% | 2,635,193 | +13% | 2.6% | $252,767,713 |
| Nuveen, LLC | 0.7% | 2,497,988 | -2.5% | 0.06% | $239,607,010 |
Institutional Holders of ARCH CAPITAL GROUP LTD. - Common Stock (ACGL) across Reporting Periods
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 17,529,323 | $1,682,388,031 | +$6,373,006 | $95.99 | 322 |
| 2025 Q4 | 324,865,709 | $31,155,460,136 | -$153,583,870 | $95.92 | 912 |
| 2025 Q3 | 326,023,270 | $29,557,629,542 | -$906,296,882 | $90.73 | 837 |
| 2025 Q2 | 335,824,160 | $30,555,092,183 | +$548,911,268 | $91.05 | 844 |
| 2025 Q1 | 330,247,215 | $31,739,635,524 | -$489,305,430 | $96.18 | 837 |
| 2024 Q4 | 341,012,446 | $31,477,140,767 | +$231,945,532 | $92.35 | 835 |
| 2024 Q3 | 331,581,988 | $37,108,309,963 | -$27,710,187 | $111.88 | 843 |
| 2024 Q2 | 330,971,576 | $33,382,800,419 | +$280,135,197 | $100.89 | 798 |
| 2024 Q1 | 328,387,561 | $30,350,823,955 | +$155,945,750 | $92.44 | 793 |
| 2023 Q4 | 327,256,233 | $24,306,386,241 | -$586,938,100 | $74.27 | 758 |
| 2023 Q3 | 334,489,978 | $26,669,814,032 | +$424,276,352 | $79.71 | 684 |
| 2023 Q2 | 329,370,562 | $24,648,714,317 | -$348,009,723 | $74.85 | 664 |
| 2023 Q1 | 333,803,579 | $22,651,753,848 | +$13,201,116 | $67.87 | 614 |
| 2022 Q4 | 334,538,159 | $21,001,642,913 | +$723,261,084 | $62.78 | 566 |
| 2022 Q3 | 325,308,883 | $14,816,051,284 | -$46,563,003 | $45.54 | 475 |
| 2022 Q2 | 326,157,333 | $14,835,031,110 | -$121,739,973 | $45.49 | 489 |
| 2022 Q1 | 329,675,170 | $15,958,942,579 | -$261,389,133 | $48.42 | 495 |
| 2021 Q4 | 334,750,822 | $14,874,958,282 | -$1,018,883,210 | $44.45 | 452 |
| 2021 Q3 | 347,004,560 | $13,252,763,969 | -$330,718,335 | $38.18 | 415 |
| 2021 Q2 | 355,753,213 | $13,850,032,301 | -$102,169,431 | $38.94 | 394 |
| 2021 Q1 | 358,773,961 | $13,765,624,334 | +$1,195,853,574 | $38.37 | 414 |
| 2020 Q4 | 329,064,784 | $11,866,343,852 | +$193,908,689 | $36.07 | 386 |
| 2020 Q3 | 324,285,958 | $9,476,074,217 | +$87,927,655 | $29.25 | 366 |
| 2020 Q2 | 321,718,920 | $9,210,514,543 | +$92,351,907 | $28.65 | 367 |
| 2020 Q1 | 318,244,625 | $9,057,394,534 | -$159,873,909 | $28.46 | 390 |
| 2019 Q4 | 323,229,435 | $13,854,099,023 | -$70,231,904 | $42.89 | 405 |
| 2019 Q3 | 325,012,921 | $13,637,947,421 | -$37,944,384 | $41.98 | 386 |
| 2019 Q2 | 326,053,124 | $12,086,658,494 | +$52,351,857 | $37.08 | 364 |
| 2019 Q1 | 326,941,849 | $10,564,910,253 | +$22,038,634 | $32.32 | 335 |
| 2018 Q4 | 325,063,046 | $8,684,484,332 | -$129,181,246 | $26.72 | 305 |
| 2018 Q3 | 329,946,993 | $9,833,046,116 | -$2,586,961 | $29.81 | 319 |
| 2018 Q2 | 330,262,180 | $8,737,914,659 | +$5,681,580,501 | $26.46 | 306 |
| 2018 Q1 | 111,590,931 | $9,548,598,373 | +$424,894,163 | $85.59 | 335 |
| 2017 Q4 | 107,605,150 | $9,763,835,969 | +$118,010,797 | $90.77 | 308 |
| 2017 Q3 | 105,149,545 | $10,358,050,790 | +$328,673,224 | $98.50 | 287 |
| 2017 Q2 | 101,970,196 | $9,513,216,543 | +$622,042,110 | $93.29 | 316 |
| 2017 Q1 | 95,859,227 | $9,084,582,132 | +$869,008,094 | $94.77 | 297 |
| 2016 Q4 | 95,256,598 | $8,214,559,665 | +$129,800,389 | $86.29 | 318 |
| 2016 Q3 | 94,644,230 | $7,496,946,466 | -$93,204,799 | $79.26 | 286 |
| 2016 Q2 | 95,853,767 | $6,900,759,648 | +$53,431,994 | $72.00 | 295 |
| 2016 Q1 | 95,141,724 | $6,763,078,665 | -$3,372,952 | $71.10 | 278 |
| 2015 Q4 | 95,144,146 | $6,637,121,042 | -$34,584,529 | $69.75 | 293 |
| 2015 Q3 | 95,306,146 | $7,002,230,725 | -$26,740,818 | $73.47 | 259 |
| 2015 Q2 | 95,919,943 | $6,422,653,043 | +$77,369,876 | $66.96 | 251 |
| 2015 Q1 | 94,908,342 | $5,845,641,488 | -$62,138,281 | $61.60 | 261 |
| 2014 Q4 | 95,987,812 | $5,673,525,952 | -$109,250,327 | $59.10 | 259 |
| 2014 Q3 | 98,676,903 | $5,399,462,982 | -$89,638,123 | $54.72 | 244 |
| 2014 Q2 | 100,328,786 | $5,762,765,281 | +$125,842,788 | $57.44 | 245 |
| 2014 Q1 | 98,453,869 | $5,664,192,814 | -$31,190,893 | $57.54 | 247 |