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Of the 13 tracked institutions holding ACGL, 7 have a 3-year clone track record — 5 of them beat the S&P. Average holder's clone alpha: +2.1pt. It's a gauge of who owns the name, not just how many.
Among the 13 tracked institutional investors we monitor, ACGL (ARCH CAP GROUP LTD) is held with a combined value of $9.22B across 96,118,347 shares. The largest holder is VANGUARD GROUP INC with a position worth $3.96B (0.06% of their portfolio). 3 funds increased their holdings. 10 funds reduced their position.
Total Institutional Value
$9.22B
Total Shares Held
96,118,347
Institutional Holders
13
% of Shares Outstanding
27.5%
of 349.39M shares · SEC 2026-05-01
Days to Cover
3.4-6.9%
8.28M shares short · FINRA 2026-06-30
Tracked 13F institutions hold 27.5% of ACGL's shares outstanding. This is a floor: 13F filings arrive on a ~45-day lag and we track only a subset of institutional filers, so true institutional ownership is higher. Shares-outstanding is the latest SEC cover-page figure (as of 2026-05-01), not a live float.
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
0
$0
1
$58.98K
Total Transactions
1
Last 12 months
| Date | Insider | Code | Type | Shares | Value |
|---|---|---|---|---|---|
| Jun 3, 2026 | Brian S Posner | S | Sale | 3,000 | $58.98K |
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | VANGUARD GROUP INC | $3.96B | 0.06% | -2.4% |
| 2 | BlackRock, Inc. | $3.01B | 0.05% | -1.2% |
| 3 | STATE STREET CORP | $1.56B | 0.05% | -1.2% |
| 4 | AQR CAPITAL MANAGEMENT LLC | $260.70M | 0.12% | +2.3% |
| 5 | FMR LLC | $164.29M | 0.01% | +5.5% |
| 6 | WELLINGTON MANAGEMENT GROUP LLP | $106.56M | 0.02% | +11.6% |
| 7 | PRICE T ROWE ASSOCIATES INC /MD/ | $49.34M | 0.01% | -2.0% |
| 8 | MILLENNIUM MANAGEMENT LLC | $41.34M | 0.02% | -39.5% |
| 9 | Bridgewater Associates, LP | $23.63M | 0.11% | -35.7% |
| 10 | ADAGE CAPITAL PARTNERS GP, L.L.C. | $18.74M | 0.03% | -40.1% |
| Member | Type | Date |
|---|---|---|
| Alan Armstrong | Buy | Mar 27, 2026 |
| Jefferson Shreve | Sell | May 12, 2025 |
| Rob Bresnahan | Sell | Feb 25, 2025 |
| Jefferson Shreve | Buy |
As of the latest SEC 13F filings, VANGUARD GROUP INC is the largest institutional holder of ACGL with a position worth $3.96B, representing 0.06% of their portfolio. In total, 13 institutional investors hold ACGL with a combined value of $9.22B.
Institutional investors hold $9.22B worth of ACGL stock across 13 positions. The largest institutional holder is VANGUARD GROUP INC with $3.96B in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For ACGL, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their ACGL positions.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
| Feb 24, 2025 |
Last Close
$103.36
2026-07-24
YTD
+10.1%
100% of 52-week range
