Arch Capital Group Ltd. (ACGL) Institutional Ownership
Q1 2026 13F Data|Updated 2026-06-13
✨
Institutional ownership decreased this quarter (-3.86 pp), while top 10 holders maintain a highly concentrated 51.8% of value.
Institutional Ownership88.6%$28.9B total value · ▼ 3.86 pp vs prior quarter
Can exceed 100% due to securities lending, short interest, and reporting timing differences.
Smart Money Score22 / 100Bearish
Based on ownership concentration, fund quality, buying/selling activity, conviction signals, and institutional trend.
Institutions & Flow895 holders-10 net flow (+118 / -128)
AI Insights & Key Takeaways
- Negative Institutional Flow (-10)
- Top 10 holders control 51.8% of institutional value
- Insiders Buying
Top Institutional Holders of ACGL
Ranked by reported Q1 2026 13F market value
Top 10 Holders
51.8%
Top 25 Holders
67.8%
Share of total reported institutional value in ACGL held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 31.4M | $3.01B | -1.2% | 8.801% | 0.05% |
| 2 | Artisan Partners Limited Partnership | 22.7M | $2.18B | -2.5% | 6.362% | 3.52% |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 22.6M | $2.17B | — | 6.347% | 0.05% |
| 4 | BAMCO INC /NY/ | 16.7M | $1.60B | -7.1% | 4.690% | 4.84% |
| 5 | STATE STREET CORP | 16.3M | $1.56B | -1.2% | 4.561% | 0.05% |
| 6 | VANGUARD PORTFOLIO MANAGEMENT LLC | 14.7M | $1.41B | — | 4.130% | 0.07% |
| 7 | WCM INVESTMENT MANAGEMENT, LLC | 12.6M | $1.21B | -5.1% | 3.537% | 2.75% |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | 10.6M | $1.01B | +1.1% | 2.971% | 0.06% |
| 9 | NORTHERN TRUST CORP | 4.5M | $429.3M | -3.5% | 1.255% | 0.06% |
| 10 | MORGAN STANLEY | 4.3M | $409.0M | -0.7% | 1.196% | 0.02% |
| 11 | DIMENSIONAL FUND ADVISORS LP | 4.2M | $400.6M | +2.9% | 1.171% | 0.08% |
| 12 | Madison Asset Management, LLC | 4.1M | $391.3M | -5.9% | 1.144% | 4.85% |
| 13 | Invesco Ltd. | 4.1M | $389.7M | +5.1% | 1.139% | 0.06% |
| 14 | Allspring Global Investments Holdings, LLC | 3.6M | $346.8M | -0.9% | 1.019% | 0.58% |
| 15 | ROYAL BANK OF CANADA | 3.5M | $339.0M | +0.2% | 0.991% | 0.06% |
| 16 | Polar Capital Holdings Plc | 3.3M | $316.8M | -0.9% | 0.926% | 1.12% |
| 17 | Legal & General Group Plc | 3.3M | $315.6M | +11.7% | 0.923% | 0.07% |
| 18 | PRINCIPAL FINANCIAL GROUP INC | 3.3M | $314.3M | -27.7% | 0.919% | 0.17% |
| 19 | UBS ASSET MANAGEMENT AMERICAS INC | 3.2M | $305.2M | +1.3% | 0.893% | 0.06% |
| 20 | MARSHFIELD ASSOCIATES | 3.1M | $292.9M | +5.7% | 0.856% | 5.87% |
| 21 | GOLDMAN SACHS GROUP INC | 2.9M | $274.5M | -3.0% | 0.803% | 0.03% |
| 22 | AQR CAPITAL MANAGEMENT LLC | 2.7M | $260.7M | +2.3% | 0.767% | 0.12% |
| 23 | FIRST TRUST ADVISORS LP | 2.6M | $252.1M | +319.5% | 0.737% | 0.18% |
| 24 | COOKE & BIELER LP | 2.2M | $214.8M | -15.1% | 0.628% | 2.43% |
| 25 | ENVESTNET ASSET MANAGEMENT INC | 2.2M | $213.3M | +6.2% | 0.624% | 0.06% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in ACGL — a direct measure of their conviction.
Quarterly Institutional Activity
Filings activity in ACGL during Q1 2026, grouped by how each filer changed its position.
- GEODE CAPITAL MANAGEMENT, LLC$1.01B
- DIMENSIONAL FUND ADVISORS LP$400.6M
- Invesco Ltd.$389.7M
- Allspring Global Investments Holdings, LLC$346.8M
- ROYAL BANK OF CANADA$339.0M
- Legal & General Group Plc$315.6M
- UBS ASSET MANAGEMENT AMERICAS INC$305.2M
- MARSHFIELD ASSOCIATES$292.9M
- AQR CAPITAL MANAGEMENT LLC$260.7M
- FIRST TRUST ADVISORS LP$252.1M
- ENVESTNET ASSET MANAGEMENT INC$213.3M
- CHARLES SCHWAB INVESTMENT MANAGEMENT INC$206.4M
ACGL Institutional Ownership by Quarter
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 895 | 1.1% | 88.63% | 3.86 pp | $28.94B | 4.2% |
| Q4 2025 | 905 | +11% | 92.49% | +4.84 pp | $30.20B | +5.5% |
| Q3 2025 | 815 | 2.4% | 87.65% | 2.61 pp | $28.62B | 2.9% |
| Q2 2025 | 835 | +1.2% | 90.26% | 3.50 pp | $29.48B | 3.7% |
| Q1 2025 | 825 | +1.0% | 93.76% | +0.88 pp | $30.62B | +1.0% |
| Q4 2024 | 817 | 0.5% | 92.88% | 15.06 pp | $30.33B | 14% |
| Q3 2024 | 821 | +4.9% | 107.94% | +9.46 pp | $35.25B | +9.6% |
| Q2 2024 | 783 | — | 98.48% | — | $32.16B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Recent Insider Activity in ACGL
Latest Form 4 transactions by company officers and directors. Insider buys are widely viewed as the highest-conviction signal because executives are risking personal capital.
| Date | Insider | Action | Shares | Price | Value |
|---|---|---|---|---|---|
| Apr 30, 2026 | Houston Daniel Joseph | Buy | 5K | $94.08 | $499K |
ACGL — Frequently Asked Questions
Quick answers to the most common questions about buying ACGL stock.
What percentage of ACGL is owned by institutions?
Based on Q1 2026 13F filings, institutional ownership of Arch Capital Group Ltd. stands at 88.6%, held across 895 reporting institutions.
Who is the largest institutional holder of ACGL?
BlackRock, Inc. is the largest reported institutional holder of ACGL, with approximately 31,354,204 shares worth $3.01B as of Q1 2026.
Is ACGL a hedge fund favorite?
No marquee "smart money" managers (Berkshire, Burry, ARK, Tiger Global, Pershing Square, Baupost, etc.) currently appear among the top 25 institutional holders of ACGL.
What is ACGL's Smart Money Score?
Our composite Smart Money Score for ACGL is 22 out of 100 (Bearish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
How many institutions bought ACGL this quarter?
118 institutions opened new positions in ACGL during Q1 2026, while 128 fully exited. 415 added to existing positions and 346 trimmed.
How is institutional ownership of ACGL changing?
ACGL institutional ownership fell by 3.86 percentage points quarter-over-quarter, with a net change of -10 holders.
How concentrated is ACGL ownership among the top holders?
The top 10 institutions account for 51.8% of all reported 13F value in ACGL, and the top 25 account for 67.8%.
Where does this ACGL institutional ownership data come from?
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.