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ACGL · Arch Capital Group Ltd.

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$99.67 +0.36 (+0.36%)
Market Cap
$33.89B
Shares
341.23M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 903
Total Value: $30,324,145,150
Total Shares: 312,426,303

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 903 13F filers · Δ vs Mar 31, 2026
Top Holder
9.7%
Sep 2023 → Jun 2026 · range 9.7% – 13.0%
−0.2 pts
Top 5
34.0%
Sep 2023 → Jun 2026 · range 34.0% – 41.0%
−0.5 pts
Top 10
49.6%
Sep 2023 → Jun 2026 · range 49.6% – 54.7%
−0.3 pts
HHI
331
Sep 2023 → Jun 2026 · range 331 – 444
Broadly held−5

Quarterly Activity

vs Mar 31, 2026
New
109
Increased
317
Decreased
370
Sold Out
124
Unchanged
107
Holder count: -15
Institutional value: -0.5%
Shares held: -1.6%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 918
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 947484 CUSIP G0450A105 13F (30d) 804 filings 759 filers Visit website Investor relations