ALAB
Astera Labs, Inc. Common Stock · Technology · Semiconductors
Momentum inputs (comparable managers): holder breadth 0.0% · share flow -3.4% · net new positions 0.0% — formula
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 160 | +4 | 95.07M | $45.48B | +12 | −9 |
| Q1 2026 | 160 | +4 | 88.96M | $9.89B | +9 | −6 |
| Q4 2025 | 155 | 0 | 96.62M | $16.07B | +2 | −1 |
| Q3 2025 | 23 | +2 | 64.57M | $12.64B | +2 | −1 |
| Q2 2025 | 19 | 0 | 54.23M | $4.90B | +2 | −2 |
| Q1 2025 | 16 | 0 | 12.18M | $727.01M | +2 | −2 |
| Q4 2024 | 16 | +1 | 10.03M | $1.33B | +2 | −1 |
| Q3 2024 | 14 | +5 | 6.25M | $327.30M | +6 | −1 |
| Q2 2024 | 9 | — | 2.59M | $156.71M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Fidelity (FMR) ✦ | 24.80M | — | $2.24B | 0.1% | n/c | 1 | SEC ↗ ×5 |
| 2 | The Vanguard Group ✦ (passive) | 12.05M | — | $1.09B | 0.0% | n/c | 1 | SEC ↗ ×5 |
| 3 | BlackRock ✦ (passive) | 7.12M | — | $644.19M | 0.0% | n/c | 1 | SEC ↗ ×18 |
| 4 | State Street Global Advisors ✦ (passive) | 2.14M | +39.3% | $193.81M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 5 | D. E. Shaw & Co. ✦ | 2.03M | -39.9% | $183.59M | 0.2% | ▼ Trim | 3 | SEC ↗ ×2 |
| 6 | Geode Capital Management ✦ (passive) | 1.24M | +36.2% | $112.56M | 0.0% | ▲ Add | 5 | SEC ↗ ×2 |
| 7 | Millennium Management ✦ | 868.04K | -15.0% | $78.49M | 0.1% | ▼ Trim | 5 | SEC ↗ |
| 8 | Two Sigma Investments ✦ | 799.29K | +77.6% | $72.27M | 0.1% | ▲ Add | 4 | SEC ↗ |
| 9 | Renaissance Technologies ✦ | 749.50K | -47.5% | $67.77M | 0.1% | ▼ Trim | 5 | SEC ↗ |
| 10 | Capital World Investors ✦ | 600.00K | 0.0% | $54.25M | 0.0% | Held | 5 | SEC ↗ |
| 11 | Adage Capital Partners ✦ | 589.93K | +27.2% | $53.34M | 0.1% | ▲ Add | 5 | SEC ↗ |
| 12 | Norges Bank ✦ (passive) | 443.53K | +2944.8% | $40.10M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 13 | Baillie Gifford ✦ | 233.23K | New | $21.09M | 0.0% | New | 1 | SEC ↗ ×4 |
| 14 | Marshall Wace ✦ | 225.22K | +31.9% | $20.36M | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 15 | Wellington Management ✦ | 108.31K | -3.3% | $9.79M | 0.0% | ▼ Trim | 4 | SEC ↗ ×3 |
| 16 | Bridgewater Associates ✦ | 80.24K | New | $7.26M | 0.0% | New | 1 | SEC ↗ |
| 17 | T. Rowe Price ✦ | 57.41K | +33.1% | $5.19M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 18 | AQR Capital Management ✦ | 39.92K | +250.5% | $3.61M | 0.0% | ▲ Add | 3 | SEC ↗ ×4 |
| 19 | Citadel Advisors ✦ | 36.37K | -90.5% | $3.29M | 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
| Baillie Gifford | $21.09M | 0.0% |
| Bridgewater Associates | $7.26M | 0.0% |
Exited
| Altimeter Capital | $58.58M | was 1.2% |
| Coatue Management | $40.37M | was 0.2% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 695 holders, 120.16M shares, $12.95B 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)
Director · 661 sh · $248,576
Director · 8.33K sh · $3.13M
Director · 3.50K sh · $1.32M
Director · 172 sh · $47,601
Director · 52 sh · $14,229
Director · 785 sh · $216,293
Director · 650 sh · $177,868
Director · 273 sh · $74,705
Director · 429 sh · $117,884
Director · 1.87K sh · $514,420
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology