ACM
Aecom · Industrials · Engineering & Construction
Momentum inputs (comparable managers):
holder breadth +14.3% ·
share flow -6.5% ·
net new positions +12.5%
· formula
Ownership fragmentation: more holders, smaller aggregate stake
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q3 2026 | 3 | 0 | 766.58K | $45.21M | n/a | n/a |
| Q2 2026 | 142 | -6 | 89.78M | $6.27B | +7 | −14 |
| Q1 2026 | 152 | -1 | 88.46M | $7.51B | +8 | −10 |
| Q4 2025 | 153 | +1 | 97.15M | $9.26B | +2 | n/a |
| Q3 2025 | 21 | 0 | 50.79M | $6.63B | +2 | −3 |
| Q2 2025 | 19 | 0 | 50.24M | $5.67B | n/a | n/a |
| Q1 2025 | 16 | +2 | 21.16M | $1.96B | +2 | n/a |
| Q4 2024 | 14 | 0 | 22.63M | $2.42B | +1 | −1 |
| Q3 2024 | 13 | -1 | 19.01M | $1.96B | +1 | −2 |
| Q2 2024 | 14 | n/a | 20.04M | $1.77B | n/a | n/a |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | PRIMECAP Management ✦ | 10.15M | -10.8% | $941.09M | 0.8% | ▼ Trim | 4 | SEC ↗ |
| 2 | State Street Global Advisors ✦ (passive) | 5.18M | +0.8% | $480.34M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 3 | Geode Capital Management ✦ (passive) | 2.37M | +4.1% | $218.96M | 0.0% | ▲ Add | 4 | SEC ↗ ×2 |
| 4 | Norges Bank ✦ (passive) | 1.76M | -1.4% | $163.11M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 5 | AQR Capital Management ✦ | 383.10K | -35.2% | $35.03M | 0.0% | ▼ Trim | 4 | SEC ↗ ×5 |
| 6 | Renaissance Technologies ✦ | 346.38K | +6.1% | $32.12M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 7 | Two Sigma Investments ✦ | 272.28K | -41.9% | $25.25M | 0.1% | ▼ Trim | 4 | SEC ↗ |
| 8 | Point72 Asset Management ✦ | 189.99K | +34.7% | $17.62M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 9 | T. Rowe Price ✦ | 136.96K | +13.3% | $12.70M | 0.0% | ▲ Add | 4 | SEC ↗ ×2 |
| 10 | D. E. Shaw & Co. ✦ | 127.09K | +459.1% | $11.79M | 0.0% | ▲ Add | 4 | SEC ↗ ×2 |
| 11 | Citadel Advisors ✦ | 100.61K | -20.0% | $9.33M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 12 | Millennium Management ✦ | 84.45K | -63.3% | $7.83M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 13 | Gotham Asset Management ✦ | 37.23K | +189.0% | $3.45M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 14 | Wellington Management ✦ | 16.06K | +27.4% | $1.49M | 0.0% | ▲ Add | 4 | SEC ↗ ×2 |
| 15 | Bridgewater Associates ✦ | 4.06K | New | $376,762 | 0.0% | New | 1 | SEC ↗ |
| 16 | Arrowstreet Capital ✦ | 3.92K | New | $363,316 | 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
| Bridgewater Associates | $376,762 | 0.0% |
| Arrowstreet Capital | $363,316 | 0.0% |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 614 holders, 112.58M shares, $9.24B 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.