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ALAB · Astera Labs, Inc.

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Market Cap
$50.36B
Shares
173.49M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 997
Total Value: $70,954,455,840
Total Shares: 146,924,799
Showing 1–100 of 1,060 holdings by value · page 1 of 11

Institutional Ownership Trend

10 quarters

Holder Concentration

Across 997 13F filers · Δ vs Mar 31, 2026
Top Holder
16.9%
Mar 2024 → Jun 2026 · range 16.9% – 44.4%
−1.9 pts
Top 5
41.0%
Mar 2024 → Jun 2026 · range 41.0% – 68.3%
−1.2 pts
Top 10
54.4%
Mar 2024 → Jun 2026 · range 53.6% – 80.3%
+0.7 pts
HHI
510
Mar 2024 → Jun 2026 · range 510 – 2,192
Broadly held−46

Quarterly Activity

vs Mar 31, 2026
New
373
Increased
292
Decreased
260
Sold Out
92
Unchanged
72
Holder count: +281
Institutional value: +375.9%
Shares held: +8.0%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 1,060
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1736297 CUSIP 04626A103 13F (30d) 701 filings 693 filers Visit website Investor relations