XBI
State Street SPDR S&P Biotech ETF · Financial Services · Asset Management
Momentum inputs (comparable managers): holder breadth 0.0% · share flow +30.0% · net new positions 0.0% · formula
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2024
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q3 2026 | 2 | 0 | 94.06K | $14.20M | n/a | −1 |
| Q2 2026 | 92 | +4 | 100.70M | $15.94B | +7 | −4 |
| Q1 2026 | 90 | +1 | 110.09M | $14.00B | +3 | −2 |
| Q4 2025 | 88 | +1 | 111.38M | $13.58B | +2 | −1 |
| Q3 2025 | 9 | -2 | 60.81M | $6.09B | +1 | −3 |
| Q2 2025 | 8 | 0 | 709.53K | $58.84M | +1 | −1 |
| Q1 2025 | 6 | 0 | 732.41K | $59.40M | +1 | −1 |
| Q4 2024 | 6 | +1 | 1.37M | $123.50M | +2 | −1 |
| Q3 2024 | 5 | 0 | 1.78M | $175.82M | +1 | −1 |
| Q2 2024 | 5 | n/a | 460.49K | $42.69M | n/a | n/a |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | D. E. Shaw & Co. ✦ | 1.00M | New | $99.08M | 0.1% | New | 1 | SEC ↗ |
| 2 | Citadel Advisors ✦ | 573.07K | +742.8% | $56.62M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 3 | Millennium Management ✦ | 145.84K | +520.9% | $14.41M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 4 | Wellington Management ✦ | 52.56K | +66.8% | $5.19M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 5 | Marshall Wace ✦ | 5.32K | -66.9% | $525,912 | 0.0% | ▼ Trim | 2 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| D. E. Shaw & Co. | $99.08M | 0.1% |
Exited
| Two Sigma Investments | $29.80M | was 0.1% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 811 holders, 125.00M shares, $15.39B 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.