Comparable stake leader
VANGUARD CAPITAL MANAGEMENT LLC
SEC ownership of ARCH CAPITAL GROUP LTD.
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0000947484.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
05 May 2026
- Symbol
- ACGL, ACGLN, ACGLO on Nasdaq
- SEC evidence covered
- 13D/G, 13F, and 3/4/5
- Largest SEC-reported holder
- VANGUARD CAPITAL MANAGEMENT LLC
- Latest 13D/G holder
- VANGUARD CAPITAL MANAGEMENT LLC
- Latest parsed evidence date
- 05 May 2026
- CIK
- 0000947484
- Location
- Pembroke, Bermuda
Ownership snapshot
2 signals
Issuer
2 identity fields
Ownership snapshot
Top shareholders of ARCH CAPITAL GROUP LTD. (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
VANGUARD CAPITAL MANAGEME...
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
05 May 2026
13D/G
13F
3/4/5
Lead comparable stake: 7.3%
13D/G row: VANGUARD CAPITAL MANAGEMENT LLC
Showing 1-8 of 50 holder rows.
Quick read
VANGUARD CAPITAL MANAGEMENT LLC leads the comparable SEC ownership view at 7.3%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Comparable ownership
Top 5
VANGUARD CAPITAL MANAGEMENT LLC
7.3%
BAMCO INC /NY/
5%
John M. Pasquesi
0.97%
Nicolas Papadopoulo
0.24%
David Gansberg
0.09%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
13F
Vanguard Capital Management · Company
|
7.3%
|
$2,509,211,045
26,140,338 shares
|
$0 | 31 Mar 2026 |
| BAMCO INC /NY/ |
13D/G
13F
Baron Capital Group, Inc. · Company
|
5%
|
$1,677,154,966
17,987,505 shares
|
-$255,277,320 | 31 Dec 2025 |
| John M. Pasquesi |
3/4/5
Director, Chair
|
0.97%
|
$332,314,275
3,467,609 shares
|
-$19,970,731 | 05 May 2026 |
| Nicolas Papadopoulo |
3/4/5
CEO, Director
|
0.24%
|
$83,942,608
871,594 shares
|
-$2,112,063 | 10 Mar 2026 |
| David Gansberg |
3/4/5
President, Arch Capital Group
|
0.09%
|
$32,434,695
336,559 shares
|
-$569,266 | 10 Mar 2026 |
| John D. Vollaro |
3/4/5
Director
|
0.05%
|
$17,493,379
192,807 shares
|
— | 30 Oct 2025 |
| Daniel Joseph Houston |
3/4/5
Director
|
0%
|
$1,277,914
13,313 shares
|
+$498,651 | 05 May 2026 |
| Neal F. Triplett |
3/4/5
Director
|
0%
|
$769,167
8,013 shares
|
— | 05 May 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$28,479,017.
Buys
$515,988
Insiders: 2
Sells
$28,995,006
Insiders: 6
Net
-$28,479,017
Shares: -304,633
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 6,300
Shares: 310,933
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 5,300 | 32,837 | $498,650 | $2,766,957 | -$2,268,307 |
| 3-6 | 0 | 260,096 | $0 | $24,529,589 | -$24,529,589 |
| 6-9 | 0 | 8,000 | $0 | $756,996 | -$756,996 |
| 9-12 | 1,000 | 10,000 | $17,338 | $941,464 | -$924,126 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 23 reporting-owner rows connected to ARCH CAPITAL GROUP LTD.. Open a relationship link for the CIK-to-CIK filing trail.
Rows
23
Largest Forms 3/4/5 holder
John M. Pasquesi
Net 12M change
-$28,479,017
Latest report
11 May 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| John M. Pasquesi | Director, Chair | $332,314,275 | -$19,970,731 | -5.7% | Mixed | 05 May 2026 |
| John L. Bunce Jr. | Director | $300,490,647 | Mixed | 05 May 2026 | ||
| Marc Grandisson) | CEO, Director | $193,145,491 | Mixed | 27 Feb 2024 | ||
| Nicolas Papadopoulo | CEO, Director | $83,942,608 | -$2,112,063 | -2.5% | Filing P/S | 10 Mar 2026 |
| Maamoun Rajeh | President, Arch Capital Group | $45,040,647 | -$5,500,322 | -11% | Mixed | 04 Mar 2026 |
| W. Preston Hutchings | SVP & Chief Investment Officer | $40,517,209 | Mixed | 27 May 2021 | ||
| David Gansberg | President, Arch Capital Group | $32,434,695 | -$569,266 | -1.7% | Filing P/S | 10 Mar 2026 |
| Francois Morin | CFO and Treasurer | $28,695,599 | -$756,996 | -2.6% | Mixed | 03 Mar 2026 |
| John D. Vollaro | Director | $17,493,379 | Mixed | 30 Oct 2025 | ||
| Petrillo Louis T. | Officer of Subsidiary | $14,558,703 | Mixed | 03 Mar 2026 | ||
| Brian S. Posner | Director | $11,727,578 | -$68,290 | -0.58% | Median | 11 May 2026 |
| Christine Todd | Chief Investment Officer | $9,626,089 | Mixed | 03 Mar 2026 | ||
| Laurie Goodman | Director | $6,886,550 | Mixed | 05 May 2026 | ||
| Eric Doppstadt | Director | $6,673,135 | Mixed | 04 May 2023 | ||
| Moira A. Kilcoyne | Director | $6,294,575 | Mixed | 05 May 2026 | ||
| Louis J. Paglia | Director | $4,637,794 | Mixed | 04 May 2023 | ||
| Eugene S. Sunshine | Director | $3,337,131 | Mixed | 09 May 2024 | ||
| Eileen A. Mallesch | Director | $2,307,437 | Mixed | 05 May 2026 | ||
| Francis Ebong | Director | $2,129,443 | Mixed | 05 May 2026 | ||
| Thomas R. Watjen | Director | $2,030,879 | Mixed | 04 May 2023 |
Recent insider transactions for ARCH CAPITAL GROUP LTD.
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Brian S. Posner | ACGL | Depositary Shares, Series G | Sale | -100% | $34,283 | $17.14 | -2,000 | 0 | 11 May 2026 | Direct |
| Neal F. Triplett | ACGL | Common Shares, $.0011 par value per share | Award | 73.6% | 3,398 | 8,013 | 05 May 2026 | Direct | ||
| Brian S. Posner | ACGL | Common Shares, $.0011 par value per share | Award | 1.72% | 2,071 | 122,175 | 05 May 2026 | Direct | ||
| Alexander S. Moczarski | ACGL | Common Shares, $.0011 par value per share | Award | 105.3% | 2,071 | 4,037 | 05 May 2026 | Direct | ||
| Eileen A. Mallesch | ACGL | Common Shares, $.0011 par value per share | Award | 17.6% | 2,071 | 13,802 | 05 May 2026 | Direct | ||
| Moira A. Kilcoyne | ACGL | Common Shares, $.0011 par value per share | Award | 10.5% | 3,398 | 35,842 | 05 May 2026 | Direct | ||
| Daniel Joseph Houston | ACGL | Common Shares, $.0011 par value per share | Award | 34.3% | 3,398 | 13,313 | 05 May 2026 | Direct | ||
| Laurie Goodman | ACGL | Common Shares, $.0011 par value per share | Award | 5.83% | 2,071 | 37,573 | 05 May 2026 | Direct | ||
| Francis Ebong | ACGL | Common Shares, $.0011 par value per share | Award | 19.2% | 2,071 | 12,878 | 05 May 2026 | Direct | ||
| John L. Bunce Jr. | ACGL | Common Shares, $.0011 par value per share | Award | 0.22% | 3,398 | 1,563,067 | 05 May 2026 | Direct | ||
| John M. Pasquesi | ACGL | Common Shares, $.0011 par value per share | Award | 1.09% | 3,185 | 294,305 | 05 May 2026 | By Trust | ||
| John M. Pasquesi | ACGL | Common Shares, $.0011 par value per share | Award | 2,071 | 2,071 | 05 May 2026 | Direct | |||
| Daniel Joseph Houston | ACGL | Common Shares, $.0011 par value per share | Purchase | 114.8% | $498,650 | $94.08 | 5,300 | 9,915 | 30 Apr 2026 | Direct |
| Brian S. Posner | ACGL | Depositary Shares, Series G | Sale | -60% | $51,345 | $17.12 | -3,000 | 2,000 | 11 Mar 2026 | Direct |
| David Gansberg | ACGL | Common Shares, $.0011 par value per share | Sale | -1.72% | $569,266 | $96.37 | -5,907 | 336,559 | 10 Mar 2026 | Direct |
| David Gansberg | ACGL | Common Shares, $.0011 par value per share | Options Exercise | 3.25% | 10,770 | 342,466 | 10 Mar 2026 | Direct | ||
| David Gansberg | ACGL | Stock Option (Right to Buy) | Options Exercise | -100% | -10,770 | 0 | 10 Mar 2026 | Direct | ||
| Nicolas Papadopoulo | ACGL | Common Shares, $.0011 par value per share | Sale | -2.45% | $2,112,063 | $96.31 | -21,930 | 871,594 | 10 Mar 2026 | Direct |
| Nicolas Papadopoulo | ACGL | Common Shares, $.0011 par value per share | Options Exercise | 2.52% | 21,930 | 893,524 | 10 Mar 2026 | Direct | ||
| Nicolas Papadopoulo | ACGL | Stock Option (Right to Buy) | Options Exercise | -100% | -21,930 | 0 | 10 Mar 2026 | Direct | ||
| Maamoun Rajeh | ACGL | Common Shares, $.0011 par value per share | Gift | 40,600 | 40,600 | 04 Mar 2026 | By LLC | |||
| Maamoun Rajeh | ACGL | Common Shares, $.0011 par value per share | Gift | -8.66% | -40,600 | 428,378 | 04 Mar 2026 | Direct | ||
| Petrillo Louis T. | ACGL | Common Shares, $.0011 par value per share | Tax liability | -5.03% | -8,030 | 151,490 | 04 Mar 2026 | Direct | ||
| David Gansberg | ACGL | Common Shares, $.0011 par value per share | Tax liability | -3.64% | -12,519 | 331,696 | 04 Mar 2026 | Direct | ||
| Maamoun Rajeh | ACGL | Common Shares, $.0011 par value per share | Award | 1.48% | 6,843 | 468,978 | 03 Mar 2026 | Direct | ||
| Maamoun Rajeh | ACGL | Stock Option (Right to Buy) | Award | 24,475 | 24,475 | 03 Mar 2026 | Direct | |||
| Christine Todd | ACGL | Common Shares, $.0011 par value per share | Award | 4.14% | 3,981 | 100,230 | 03 Mar 2026 | Direct | ||
| Christine Todd | ACGL | Stock Option (Right to Buy) | Award | 20,543 | 14,238 | 03 Mar 2026 | Direct | |||
| Petrillo Louis T. | ACGL | Common Shares, $.0011 par value per share | Award | 1.84% | 2,889 | 159,520 | 03 Mar 2026 | Direct | ||
| Petrillo Louis T. | ACGL | Stock Option (Right to Buy) | Award | 10,331 | 10,331 | 03 Mar 2026 | Direct | |||
| Francois Morin | ACGL | Common Shares, $.0011 par value per share | Award | 1.82% | 5,329 | 298,788 | 03 Mar 2026 | Direct | ||
| Francois Morin | ACGL | Stock Option (Right to Buy) | Award | 19,061 | 19,061 | 03 Mar 2026 | Direct | |||
| David Gansberg | ACGL | Common Shares, $.0011 par value per share | Award | 2.03% | 6,843 | 344,215 | 03 Mar 2026 | Direct | ||
| David Gansberg | ACGL | Stock Option (Right to Buy) | Award | 24,475 | 24,475 | 03 Mar 2026 | Direct | |||
| Nicolas Papadopoulo | ACGL | Common Shares, $.0011 par value per share | Award | 2.51% | 21,318 | 871,594 | 03 Mar 2026 | Direct | ||
| Nicolas Papadopoulo | ACGL | Stock Option (Right to Buy) | Award | 76,243 | 76,243 | 03 Mar 2026 | Direct | |||
| Petrillo Louis T. | ACGL | Common Shares, $.0011 par value per share | Tax liability | -0.2% | -312 | 156,631 | 27 Feb 2026 | Direct | ||
| David Gansberg | ACGL | Common Shares, $.0011 par value per share | Tax liability | -0.16% | -553 | 337,372 | 27 Feb 2026 | Direct | ||
| Nicolas Papadopoulo | ACGL | Common Shares, $.0011 par value per share | Award | 5.81% | 46,674 | 850,276 | 24 Feb 2026 | Direct | ||
| Maamoun Rajeh | ACGL | Common Shares, $.0011 par value per share | Award | 6.58% | 28,546 | 462,135 | 24 Feb 2026 | Direct | ||
| Christine Todd | ACGL | Common Shares, $.0011 par value per share | Award | 35.2% | 25,046 | 96,249 | 24 Feb 2026 | Direct | ||
| Petrillo Louis T. | ACGL | Common Shares, $.0011 par value per share | Award | 12.3% | 17,136 | 156,943 | 24 Feb 2026 | Direct | ||
| Petrillo Louis T. | ACGL | Common Shares, $.0011 par value per share | Tax liability | -0.29% | -412 | 139,807 | 24 Feb 2026 | Direct | ||
| David Gansberg | ACGL | Common Shares, $.0011 par value per share | Award | 9.23% | 28,546 | 337,925 | 24 Feb 2026 | Direct | ||
| David Gansberg | ACGL | Common Shares, $.0011 par value per share | Tax liability | -0.16% | -509 | 309,379 | 24 Feb 2026 | Direct | ||
| Francois Morin | ACGL | Common Shares, $.0011 par value per share | Award | 10.3% | 27,432 | 293,459 | 24 Feb 2026 | Direct | ||
| Maamoun Rajeh | ACGL | Common Shares, $.0011 par value per share | Sale | -9.86% | $4,558,858 | $96.12 | -47,430 | 433,589 | 11 Feb 2026 | Direct |
| Maamoun Rajeh | ACGL | Common Shares, $.0011 par value per share | Options Exercise | 10.9% | 47,430 | 481,019 | 11 Feb 2026 | Direct | ||
| Maamoun Rajeh | ACGL | Stock Option (Right to Buy) | Options Exercise | -100% | -47,430 | 0 | 11 Feb 2026 | Direct | ||
| John M. Pasquesi | ACGL | Common Shares, $.0011 par value per share | Sale | -2.95% | $828,684 | $94.17 | -8,800 | 289,556 | 15 Dec 2025 | By Trust |
* marks a reported price that did not pass the local price check.