Ranked by reported Q2 2026 13F market value
Share of total reported institutional value in AJG held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 19.8M | $4.55B | +2.7% | 7.716% | 0.07% |
| 2 | FMR LLC | 18.6M | $4.28B | +27.5% | 7.258% | 0.19% |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 16.8M | $3.85B | +0.5% | 6.530% | 0.08% |
| 4 | JPMORGAN CHASE & CO | 14.4M | $3.26B | -26.6% | 5.588% | 0.18% |
| 5 | Capital World Investors | 12.5M | $2.87B | -9.4% | 4.870% | 0.34% |
| 6 | VANGUARD PORTFOLIO MANAGEMENT LLC | 12.5M | $2.86B | +0.3% | 4.848% | 0.13% |
| 7 | STATE STREET CORP | 11.3M | $2.60B | +3.0% | 4.400% | 0.04% |
| 8 | DODGE & COX | 9.4M | $2.15B | +27.3% | 3.645% | 1.13% |
| 9 | NORGES BANK | 6.7M | $1.55B | — | 2.621% | 0.15% |
| 10 | GEODE CAPITAL MANAGEMENT, LLC | 6.3M | $1.45B | +0.9% | 2.452% | 0.08% |
| 11 | EAGLE CAPITAL MANAGEMENT LLC | 4.9M | $1.12B | +83.5% | 1.904% | 3.43% |
| 12 | PRINCIPAL FINANCIAL GROUP INC | 3.5M | $802.3M | +7.8% | 1.360% | 0.39% |
| 13 | GOLDMAN SACHS GROUP INC | 2.8M | $646.9M | +44.3% | 1.097% | 0.06% |
| 14 | MORGAN STANLEY | 2.6M | $595.0M | -36.1% | 1.009% | 0.03% |
| 15 | Capital Research Global Investors | 2.6M | $593.6M | -13.2% | 1.006% | 0.08% |
| 16 | WCM INVESTMENT MANAGEMENT, LLC | 2.4M | $550.9M | +2.7% | 0.944% | 1.00% |
| 17 | GTCR LLC | 2.4M | $544.9M | 0.0% | 0.924% | 13.95% |
| 18 | FRANKLIN RESOURCES INC | 2.2M | $509.4M | +13.6% | 0.864% | 0.11% |
| 19 | NORTHERN TRUST CORP | 2.2M | $506.1M | -1.1% | 0.858% | 0.06% |
| 20 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 2.2M | $495.1M | +2.2% | 0.839% | 0.07% |
| 21 | Capital International Investors | 2.0M | $459.5M | -22.9% | 0.779% | 0.10% |
| 22 | Jupiter Topco LLC | 1.9M | $445.4M | — | 0.755% | 0.18% |
| 23 | MANUFACTURERS LIFE INSURANCE COMPANY, THE | 1.9M | $440.2M | +494.4% | 0.746% | 0.17% |
| 24 | Invesco Ltd. | 1.8M | $401.9M | +2.0% | 0.681% | 0.03% |
| 25 | BANK OF AMERICA CORP /DE/ | 1.5M | $353.8M | -16.9% | 0.600% | 0.02% |
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 AJG — a direct measure of their conviction.
Filings activity in AJG during Q2 2026, grouped by how each filer changed its position.
Institutions that opened a new AJG position in Q2 2026
Institutions that fully closed their AJG position in Q2 2026
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 |
|---|---|---|---|---|---|---|
| Q2 2026 | 1,296 | +3.8% | 92.95% | +3.26 pp | $53.57B | +9.7% |
| Q1 2026 | 1,248 | 2.2% | 89.69% | 1.24 pp | $48.83B | 17% |
| Q4 2025 | 1,276 | 2.7% | 90.93% | +2.98 pp | $58.51B | 13% |
| Q3 2025 | 1,312 | 3.2% | 87.95% | 0.86 pp | $67.52B | 4.3% |
| Q2 2025 | 1,355 | +2.3% | 88.81% | +0.66 pp | $70.55B | 5.8% |
| Q1 2025 | 1,324 | +3.6% | 88.15% | 3.42 pp | $74.89B | +19% |
| Q4 2024 | 1,278 | +10% | 91.57% | +8.45 pp | $62.98B | +28% |
| Q3 2024 | 1,160 | — | 83.12% | — | $49.34B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying AJG stock.
Based on Q2 2026 13F filings, institutional ownership of Arthur J. Gallagher & Co. stands at 93.0%, held across 1,296 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of AJG, with approximately 19,822,870 shares worth $4.55B as of Q2 2026.
No marquee "smart money" managers (Berkshire, Burry, ARK, Tiger Global, Pershing Square, Baupost, etc.) currently appear among the top 25 institutional holders of AJG.
Our composite Smart Money Score for AJG is 53 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
138 institutions opened new positions in AJG during Q2 2026, while 108 fully exited. 822 added to existing positions and 295 trimmed.
AJG institutional ownership rose by 3.26 percentage points quarter-over-quarter, with a net change of +48 holders.
The top 10 institutions account for 54.9% of all reported 13F value in AJG, and the top 25 account for 70.7%.
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.
Arthur J. Gallagher & Co. (AJG) Institutional Ownership