ARCH CAPITAL GROUP LTD. ACGL
CIK 0000947484 · CUSIP G0450A105
Quarter-end disclosures, not live holdings.
Top 20 institutions
Weight means this stock's share of the manager's own portfolio.
| # | Manager | Value | Manager weight | Change vs prior | Source | |
|---|---|---|---|---|---|---|
| 01 | VANGUARD GROUP INC CIK 102909 · View history | $3.78B 40,858,890 shares | 0.07% | +104.01K(+0.3%)Added | SEC filing ↗ May 10, 2024 | ▾ |
| 02 | BlackRock Inc. CIK 1364742 · View history | $2.56B 27,673,741 shares | 0.06% | +345.57K(+1.3%)Added | SEC filing ↗ May 10, 2024 | ▾ |
| 03 | Artisan Partners Limited Partnership CIK 1466153 · View history | $2.28B 24,691,077 shares | 3.33% | -203.17K(-0.8%)Reduced | SEC filing ↗ May 13, 2024 | ▾ |
| 04 | BAMCO INC /NY/ CIK 1017918 · View history | $1.94B 21,024,711 shares | 5.18% | -267.33K(-1.3%)Reduced | SEC filing ↗ May 15, 2024 | ▾ |
| 05 | STATE STREET CORP CIK 93751 · View history | $1.47B 15,919,231 shares | 0.07% | +60.83K(+0.4%)Added | SEC filing ↗ May 15, 2024 | ▾ |
| 06 | WCM INVESTMENT MANAGEMENT, LLC CIK 1061186 · View history | $1.31B 14,117,989 shares | 3.10% | -361.03K(-2.5%)Reduced | SEC filing ↗ Apr 25, 2024 | ▾ |
| 07 | GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history | $871.14M 9,445,141 shares | 0.08% | +533.90K(+6.0%)Added | SEC filing ↗ May 13, 2024 | ▾ |
| 08 | PRINCIPAL FINANCIAL GROUP INC CIK 1126328 · View history | $628.61M 6,800,236 shares | 0.37% | +693.61K(+11.4%)Added | SEC filing ↗ Apr 29, 2024 | ▾ |
| 09 | JPMORGAN CHASE & CO CIK 19617 · Amended · View history | $613.03M 6,631,599 shares | 0.05% | +691.88K(+11.6%)Added | SEC filing ↗ Dec 26, 2024 | ▾ |
| 10 | Allspring Global Investments Holdings, LLC CIK 1890906 · Amended · View history | $546.05M 5,907,122 shares | 0.85% | +99.33K(+1.7%)Added | SEC filing ↗ Apr 29, 2024 | ▾ |
| 11 | Capital World Investors CIK 1422849 · View history | $439.84M 4,758,107 shares | 0.07% | -5.85M(-55.2%)Reduced | SEC filing ↗ May 14, 2024 | ▾ |
| 12 | NORTHERN TRUST CORP CIK 73124 · View history | $406.16M 4,393,801 shares | 0.07% | -152.54K(-3.4%)Reduced | SEC filing ↗ May 14, 2024 | ▾ |
| 13 | WELLINGTON MANAGEMENT GROUP LLP CIK 902219 · View history | $405.38M 4,385,326 shares | 0.07% | -772.14K(-15.0%)Reduced | SEC filing ↗ May 15, 2024 | ▾ |
| 14 | NORGES BANK CIK 1374170 · Amended · View history | $403.42M 4,364,106 shares | 0.06% | +196.93K(+4.7%)Added | SEC filing ↗ May 14, 2024 | ▾ |
| 15 | MARSHFIELD ASSOCIATES CIK 914976 · View history | $400.13M 4,328,577 shares | 8.21% | -704.63K(-14.0%)Reduced | SEC filing ↗ May 15, 2024 | ▾ |
| 16 | Capital International Investors CIK 1562230 · View history | $380.17M 4,112,577 shares | 0.08% | +1.56M(+61.1%)Added | SEC filing ↗ May 14, 2024 | ▾ |
| 17 | Nuveen Asset Management, LLC CIK 1521019 · View history | $353.07M 3,819,620 shares | 0.10% | +71.80K(+1.9%)Added | SEC filing ↗ May 13, 2024 | ▾ |
| 18 | Madison Asset Management, LLC CIK 1299351 · View history | $352.19M 3,809,941 shares | 4.33% | +307.29K(+8.8%)Added | SEC filing ↗ May 9, 2024 | ▾ |
| 19 | DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history | $340.27M 3,681,003 shares | 0.09% | +162.18K(+4.6%)Added | SEC filing ↗ May 10, 2024 | ▾ |
| 20 | ROYAL BANK OF CANADA CIK 1000275 · Amended · View history | $338.26M 3,659,175 shares | 0.08% | +632.10K(+20.9%)Added | SEC filing ↗ Nov 5, 2024 | ▾ |
Showing 20 / 800 institutions. The complete set is available through the API.
Coverage & totals by quarter
Reporting institutions by quarter
Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.
Explore all 800 reporting institutions.
This page includes 20 of 800 reporting institutions. Sign in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.
- Download CSV
- Earlier quarters
- Advanced screening & filtering
- API & AI access
+ New accounts get free API credits to explore data beyond ownership filings.
For AI agents & developers
The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 20 of 800 reporting institutions; totals use the complete disclosed data.
Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP.
MCP https://api.akkrudata.ai/mcp
get_institutional_security_holders
{"cusip":"G0450A105","quarter":"2024Q1","type":"positions","page_size":100}Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.
- MCP endpoint
- https://api.akkrudata.ai/mcp
- API / MCP documentation
- /documents
- llms.txt
- /llms.txt
Sources, coverage & how to read this data
Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.