NKTR
Nektar Therapeutics · Healthcare · Biotechnology
Momentum inputs (comparable managers):
holder breadth -9.1% ·
share flow +2.8% ·
net new positions -10.0%
· formula
Concentrated accumulation: rising shares among fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 78 | +13 | 18.28M | $1.28B | +22 | −8 |
| Q1 2026 | 67 | +13 | 13.34M | $957.94M | +15 | −3 |
| Q4 2025 | 55 | +1 | 8.38M | $354.26M | +2 | n/a |
| Q3 2025 | 15 | 0 | 5.00M | $284.66M | +2 | −2 |
| Q2 2025 | 12 | -1 | 3.08M | $79.53M | +1 | −2 |
| Q1 2025 | 10 | -1 | 25.55M | $17.36M | n/a | −1 |
| Q4 2024 | 11 | 0 | 24.86M | $23.13M | n/a | n/a |
| Q3 2024 | 10 | +2 | 27.79M | $36.10M | +2 | n/a |
| Q2 2024 | 8 | n/a | 27.40M | $33.98M | n/a | n/a |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | PRIMECAP Management ✦ | 5.35M | -3.4% | $3.64M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 2 | Renaissance Technologies ✦ | 4.70M | +20.2% | $3.20M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 3 | Geode Capital Management ✦ (passive) | 4.01M | +1.3% | $2.73M | 0.0% | ▲ Add | 4 | SEC ↗ ×2 |
| 4 | AQR Capital Management ✦ | 3.64M | +336.9% | $2.46M | 0.0% | ▲ Add | 3 | SEC ↗ ×5 |
| 5 | State Street Global Advisors ✦ (passive) | 3.26M | -0.4% | $2.22M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 6 | Millennium Management ✦ | 2.29M | -49.4% | $1.56M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 7 | Two Sigma Investments ✦ | 1.44M | -6.7% | $975,865 | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 8 | Citadel Advisors ✦ | 491.19K | +23.7% | $334,013 | 0.0% | ▲ Add | 4 | SEC ↗ |
| 9 | T. Rowe Price ✦ | 256.38K | +32.9% | $175,000 | 0.0% | ▲ Add | 4 | SEC ↗ |
| 10 | D. E. Shaw & Co. ✦ | 115.19K | -34.2% | $78,329 | 0.0% | ▼ Trim | 4 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| No new tracked buyers this quarter. |
Exited
| Wellington Management | $485,840 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 1 holders, 13.40K shares, $964 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 · 186 sh · $13,388
Officer, Director · 418 sh · $30,088
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology