Arch Capital Group Ltd. (ACGL) ownership: Top institutional holder: VANGUARD GROUP INC ($3.96B). Insider activity: Net Seller (0 buys, 20 sells). 3 recent congressional STOCK Act disclosures. SEC EDGAR first-party data.
| Holder | Shares | Market Value | Reported |
|---|---|---|---|
| VANGUARD GROUP INC | 41288784.00 | $3.96B | 2025-12-31 |
| BlackRock, Inc. | 31354204.00 | $3.01B | 2026-03-31 |
| Artisan Partners Limited Partnership | 22666011.00 | $2.18B | 2026-03-31 |
| VANGUARD CAPITAL MANAGEMENT LLC | 22612609.00 | $2.17B | 2026-03-31 |
| BAMCO INC /NY/ | 16709759.00 | $1.60B | 2026-03-31 |
| STATE STREET CORP | 16250722.00 | $1.56B | 2026-03-31 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 14712819.00 | $1.41B | 2026-03-31 |
| WCM INVESTMENT MANAGEMENT, LLC | 12602412.00 | $1.21B | 2026-03-31 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-06-03 | |
| Sell | null | 2026-05-11 | |
| Sell | null | 2026-05-11 | |
| Sell | null | 2026-05-05 | |
| Sell | null | 2026-05-05 | |
| Sell | null | 2026-05-05 | |
| Sell | null | 2026-05-05 | |
| Sell | null | 2026-05-05 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.