RNAM
Avidity Biosciences Inc · Healthcare · Biotechnology
Momentum inputs (comparable managers):
holder breadth -15.4% ·
share flow +0.2% ·
net new positions -18.2%
· formula
Concentrated accumulation: rising shares among fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | T. Rowe Price ✦ | 11.34M | +2.7% | $334.70M | 0.0% | ▲ Add | 4 | SEC ↗ ×2 |
| 2 | Wellington Management ✦ | 9.68M | +19.5% | $285.89M | 0.1% | ▲ Add | 4 | SEC ↗ ×9 |
| 3 | State Street Global Advisors ✦ (passive) | 4.32M | -6.1% | $127.57M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 4 | Geode Capital Management ✦ (passive) | 2.76M | -1.9% | $81.35M | 0.0% | ▼ Trim | 4 | SEC ↗ ×2 |
| 5 | Adage Capital Partners ✦ | 2.15M | -22.0% | $63.35M | 0.1% | ▼ Trim | 4 | SEC ↗ |
| 6 | Norges Bank ✦ (passive) | 838.22K | +15.7% | $24.74M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 7 | Marshall Wace ✦ | 455.19K | +179.5% | $13.44M | 0.0% | ▲ Add | 4 | SEC ↗ ×2 |
| 8 | Two Sigma Investments ✦ | 28.00K | -78.9% | $826,560 | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 9 | Millennium Management ✦ | 17.05K | -28.8% | $503,257 | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 10 | Citadel Advisors ✦ | 16.18K | -96.1% | $477,693 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 11 | AQR Capital Management ✦ | 10.79K | -17.4% | $318,374 | 0.0% | ▼ Trim | 4 | SEC ↗ ×4 |
“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
| D. E. Shaw & Co. | $16.25M | was 0.0% |
| Renaissance Technologies | $6.14M | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 1 holders, 8.00K shares, $236,160 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.