REGN
Regeneron Pharmaceuticals, Inc. · Healthcare · Biotechnology
Momentum inputs (comparable managers):
holder breadth +8.3% ·
share flow +4.1% ·
net new positions +7.7%
· formula
Broad accumulation: rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q3 2026 | 5 | -2 | 489.34K | $362.44M | n/a | −2 |
| Q2 2026 | 169 | -1 | 76.12M | $47.53B | +5 | −5 |
| Q1 2026 | 172 | -4 | 77.87M | $60.04B | +2 | −7 |
| Q4 2025 | 175 | 0 | 81.03M | $62.54B | +1 | n/a |
| Q3 2025 | 27 | -1 | 48.96M | $27.52B | n/a | −2 |
| Q2 2025 | 26 | +2 | 40.24M | $21.12B | +3 | −1 |
| Q1 2025 | 21 | +1 | 16.62M | $10.53B | +1 | n/a |
| Q4 2024 | 20 | -1 | 17.24M | $12.28B | n/a | −1 |
| Q3 2024 | 20 | +1 | 13.10M | $13.76B | +2 | −1 |
| Q2 2024 | 19 | n/a | 13.77M | $14.47B | n/a | n/a |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | The Vanguard Group ✦ (passive) | 9.42M | n/a | $4.95B | 0.1% | n/c | 1 | SEC ↗ ×6 |
| 2 | BlackRock ✦ (passive) | 9.28M | n/a | $4.87B | 0.1% | n/c | 1 | SEC ↗ ×22 |
| 3 | State Street Global Advisors ✦ (passive) | 4.83M | +0.9% | $2.54B | 0.1% | ▲ Add | 3 | SEC ↗ |
| 4 | Dodge & Cox ✦ | 3.83M | +64.6% | $2.01B | 1.1% | ▲ Add | 5 | SEC ↗ |
| 5 | Fidelity (FMR) ✦ | 3.33M | n/a | $1.75B | 0.1% | n/c | 1 | SEC ↗ ×5 |
| 6 | Geode Capital Management ✦ (passive) | 2.47M | -0.2% | $1.29B | 0.1% | ▼ Trim | 5 | SEC ↗ ×2 |
| 7 | Capital World Investors ✦ | 1.97M | +1.4% | $1.03B | 0.1% | ▲ Add | 5 | SEC ↗ |
| 8 | Norges Bank ✦ (passive) | 1.20M | +6.0% | $628.15M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 9 | D. E. Shaw & Co. ✦ | 777.47K | +34.3% | $408.17M | 0.4% | ▲ Add | 5 | SEC ↗ ×2 |
| 10 | T. Rowe Price ✦ | 766.44K | -64.8% | $402.38M | 0.0% | ▼ Trim | 5 | SEC ↗ ×2 |
| 11 | Citadel Advisors ✦ | 680.50K | +808.5% | $357.27M | 0.3% | ▲ Add | 5 | SEC ↗ ×2 |
| 12 | Two Sigma Investments ✦ | 499.83K | +34.3% | $262.41M | 0.5% | ▲ Add | 4 | SEC ↗ |
| 13 | Millennium Management ✦ | 338.83K | +99.8% | $177.88M | 0.2% | ▲ Add | 5 | SEC ↗ |
| 14 | Marshall Wace ✦ | 239.91K | +17036.4% | $125.95M | 0.2% | ▲ Add | 5 | SEC ↗ ×3 |
| 15 | Point72 Asset Management ✦ | 143.11K | New | $75.13M | 0.2% | New | 1 | SEC ↗ |
| 16 | AQR Capital Management ✦ | 114.74K | -51.4% | $59.68M | 0.0% | ▼ Trim | 5 | SEC ↗ ×6 |
| 17 | Adage Capital Partners ✦ | 95.63K | +3.1% | $50.21M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 18 | Bridgewater Associates ✦ | 89.05K | +324.2% | $46.75M | 0.2% | ▲ Add | 5 | SEC ↗ |
| 19 | Wellington Management ✦ | 71.16K | +308.6% | $37.36M | 0.0% | ▲ Add | 5 | SEC ↗ ×7 |
| 20 | Renaissance Technologies ✦ | 45.06K | -42.9% | $23.66M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 21 | Gotham Asset Management ✦ | 27.00K | -15.7% | $14.18M | 0.1% | ▼ Trim | 5 | SEC ↗ |
| 22 | Scion Asset Management ✦ | 15.00K | New | $7.88M | 14.0% | New | 1 | SEC ↗ |
| 23 | ARK Investment Management ✦ | 12.61K | -8.0% | $6.62M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 24 | Arrowstreet Capital ✦ | 6.06K | New | $3.18M | 0.0% | New | 1 | SEC ↗ |
| 25 | Fisher Asset Management ✦ | 4.35K | 0.0% | $2.29M | 0.0% | Held | 5 | SEC ↗ |
| 26 | GAMCO Investors ✦ | 602 | +2.2% | $316,050 | 0.0% | ▲ Add | 5 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| Point72 Asset Management | $75.13M | 0.2% |
| Scion Asset Management | $7.88M | 14.0% |
| Arrowstreet Capital | $3.18M | 0.0% |
Exited
| Viking Global Investors | $61.99M | was 0.2% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 1,385 holders, 83.52M shares, $61.43B 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 · 50 sh · $39,074
Officer · 127 sh · $97,701
Officer · 12 sh · $9,242
Officer · 283 sh · $218,351
Officer · 211 sh · $163,010
Officer · 224 sh · $173,242
Officer · 121 sh · $93,712
Officer · 376 sh · $291,573
Officer · 66 sh · $51,236
Officer · 38 sh · $29,555
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology