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Of the 17 tracked institutions holding ALAB, 11 have a 3-year clone track record — 9 of them beat the S&P. Average holder's clone alpha: +6.8pt. It's a gauge of who owns the name, not just how many.
Among the 17 tracked institutional investors we monitor, ALAB (ASTERA LABS INC) is held with a combined value of $7.55B across 61,707,514 shares. The largest holder is FMR LLC with a position worth $2.80B (0.15% of their portfolio). 10 funds increased their holdings. 7 funds reduced their position.
Total Institutional Value
$7.55B
Total Shares Held
61,707,514
Institutional Holders
17
% of Shares Outstanding
36.0%
of 171.41M shares · SEC 2026-04-30
Days to Cover
1.7+10.1%
12.68M shares short · FINRA 2026-06-30
Tracked 13F institutions hold 36.0% of ALAB's shares outstanding. This is a floor: 13F filings arrive on a ~45-day lag and we track only a subset of institutional filers, so true institutional ownership is higher. Shares-outstanding is the latest SEC cover-page figure (as of 2026-04-30), not a live float.
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | FMR LLC | $2.80B | 0.15% | +0.8% |
| 2 | VANGUARD GROUP INC | $2.30B | 0.03% | +0.6% |
| 3 | BlackRock, Inc. | $1.25B | 0.02% | -11.7% |
| 4 | Atreides Management, LP | $368.89M | 8.99% | +108.9% |
| 5 | STATE STREET CORP | $365.36M | 0.01% | +7.5% |
| 6 | MAVERICK CAPITAL LTD | $104.71M | 1.22% | -2.1% |
| 7 | Bridgewater Associates, LP | $82.30M | 0.37% | +212.2% |
| 8 | PRICE T ROWE ASSOCIATES INC /MD/ | $67.79M | 0.01% | -46.9% |
| 9 | ADAGE CAPITAL PARTNERS GP, L.L.C. | $49.73M | 0.08% | +168.9% |
| 10 | MILLENNIUM MANAGEMENT LLC | $35.15M | 0.01% | -36.2% |
| Member | Type | Date |
|---|---|---|
| Rob Bresnahan | Sell | Feb 27, 2025 |
| Rob Bresnahan | Sell | Feb 18, 2025 |
As of the latest SEC 13F filings, FMR LLC is the largest institutional holder of ALAB with a position worth $2.80B, representing 0.15% of their portfolio. In total, 17 institutional investors hold ALAB with a combined value of $7.55B.
Institutional investors hold $7.55B worth of ALAB stock across 17 positions. The largest institutional holder is FMR LLC with $2.80B in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For ALAB, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their ALAB positions.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
Last Close
$291.58
2026-07-24
YTD
+62.4%
50% of 52-week range
