AJG
Arthur J. Gallagher & Co. · Financial Services · Insurance - Brokers
Momentum inputs (comparable managers):
holder breadth +25.0% ·
share flow -1.8% ·
net new positions +20.0%
· formula
Ownership fragmentation: more holders, smaller aggregate stake
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2024
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q3 2026 | 3 | 0 | 364.03K | $83.50M | n/a | −2 |
| Q2 2026 | 164 | +1 | 178.53M | $40.94B | +6 | −6 |
| Q1 2026 | 167 | -1 | 178.94M | $38.71B | +4 | −6 |
| Q4 2025 | 167 | +3 | 199.17M | $51.54B | +5 | −1 |
| Q3 2025 | 23 | +1 | 147.58M | $45.71B | +3 | −3 |
| Q2 2025 | 20 | 0 | 102.85M | $32.91B | +1 | −1 |
| Q1 2025 | 17 | -3 | 40.12M | $13.85B | +1 | −4 |
| Q4 2024 | 20 | +4 | 40.97M | $11.63B | +4 | n/a |
| Q3 2024 | 15 | +3 | 21.34M | $6.00B | +3 | n/a |
| Q2 2024 | 12 | n/a | 21.73M | $5.63B | n/a | n/a |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Capital World Investors ✦ | 6.29M | +8.3% | $1.77B | 0.3% | ▲ Add | 2 | SEC ↗ |
| 2 | Geode Capital Management ✦ (passive) | 5.49M | +1.5% | $1.54B | 0.1% | ▲ Add | 2 | SEC ↗ ×2 |
| 3 | Norges Bank ✦ (passive) | 5.18M | -10.7% | $1.46B | 0.2% | ▼ Trim | 2 | SEC ↗ |
| 4 | Baillie Gifford ✦ | 2.38M | -4.3% | $669.93M | 0.5% | ▼ Trim | 2 | SEC ↗ ×4 |
| 5 | Wellington Management ✦ | 1.08M | -8.7% | $303.05M | 0.1% | ▼ Trim | 2 | SEC ↗ ×7 |
| 6 | T. Rowe Price ✦ | 380.15K | -13.8% | $106.96M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 7 | AQR Capital Management ✦ | 117.99K | +4.3% | $32.92M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 8 | D. E. Shaw & Co. ✦ | 109.12K | +75.0% | $30.70M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 9 | Adage Capital Partners ✦ | 96.50K | -58.0% | $27.15M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 10 | Renaissance Technologies ✦ | 90.70K | New | $25.52M | 0.0% | New | 1 | SEC ↗ |
| 11 | Millennium Management ✦ | 42.62K | -66.8% | $11.99M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 12 | Gotham Asset Management ✦ | 35.22K | +35.5% | $9.91M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 13 | Citadel Advisors ✦ | 29.79K | New | $8.38M | 0.0% | New | 1 | SEC ↗ |
| 14 | Marshall Wace ✦ | 15.82K | -59.8% | $4.45M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 15 | GAMCO Investors ✦ | 1.16K | New | $327,233 | 0.0% | New | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| Renaissance Technologies | $25.52M | 0.0% |
| Citadel Advisors | $8.38M | 0.0% |
| GAMCO Investors | $327,233 | 0.0% |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 1,234 holders, 209.94M shares, $44.40B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
What else this security's tracked holders most often hold: shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Officer · 1.00K sh · $252,858
Officer · 12.00K sh · $3.17M
Officer · 12.00K sh · $3.24M
Officer · 3.50K sh · $899,588
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology