Security key
G0450A105
ARCH CAPITAL GROUP LTD. - Common Stock (ACGL)
CUSIP: G0450A105
Q1 2026 13F Holders as of 31 Mar 2026
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 317,427,379
- Total 13F value
- $30,446,710,676
- Share change
- -7,198,996
- Put/Call ratio
- 114%
- SEC-reported price per share
- $95.99
- Number of holders
- 907
- Value change
- -$696,392,562
- Number of buys
- 412
- Number of sells
- 454
- Shares outstanding
- 356,621,255
Holder snapshot
7 signals
Show 1 more signal
Security identity
1 source field
Report period
Q1 2026
Institutions
907
Top holders
10
ACGL full security history
Ownership snapshot
Full 13F holder table
Previous quarter: Q4 2025
ARCH CAPITAL GROUP LTD. SEC filings
ARCH CAPITAL GROUP LTD. company facts
Broader feeds
Reporting periods
Holder history for CUSIP G0450A105
Recent filing periods:
Ownership snapshot
Top reported holders of ACGL - ARCH CAPITAL GROUP LTD. - Common Stock (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
VANGUARD GROUP INC
Comparable rows
15/15
Latest evidence
31 Mar 2026
13D/G
13F
3/4/5
Lead comparable stake: 7.3%
13D/G row: VANGUARD CAPITAL MANAGEMENT LLC
Showing 1-6 of 15 holder rows.
Quick read
VANGUARD CAPITAL MANAGEMENT LLC leads the comparable SEC ownership view at 7.3%.
15 of 15 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%
Nicolas Papadopoulo
0.24%
David Gansberg
0.09%
John D. Vollaro
0.05%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
Vanguard Capital Management
|
7.3%
|
$2,509,211,045
26,140,338 shares
|
$0 | 31 Mar 2026 |
| BAMCO INC /NY/ |
13F
13D/G
Company · Baron Capital Group, Inc.
|
5%
from 13D/G
|
$1,725,361,480
17,987,505 shares
|
— | 31 Dec 2025 |
| 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 |
| VANGUARD GROUP INC |
13F
Company
|
12%
|
$3,960,420,161
41,288,784 shares
|
— | 31 Dec 2025 |
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.
13F holder rows
Institutional holders as of Q1 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
907
Shares
317,427,379
Rows available
907
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q1 2026 vs Q4 2025 Across Filers
Q4 2025 holders
917
Q1 2026 holders
907
Holder diff
-10
| Investor | Q4 2025 Shares | Q1 2026 Shares | Share Diff | Share Chg % | Q4 2025 value | Q1 2026 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend