Astera Labs, Inc. Common Stock
Astera Labs, Inc. Common Stock (ALAB) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · ALAB · as of Sep 30, 2024
Ownership Breakdown
286
Institutional Holders
▲ 120 vs Q2
$3.87B
Total Inst. Value
▲ $788.85M vs Q2
171.41M
Shares Outstanding
freeFloat 81.61%
74.18M
13F Shares Held
▲ 23.27M vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
ALAB largest shareholders · institutional ownership
Q3 2024 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
FMR LLC semiconductors & related devices | 23.50M | 14.99% | 14.99% | $1.23T | Nov 13, 2024 | ▲ 153.5K |
ATREIDES MANAGEMENT, LP semiconductors & related devices | 7.17M | 4.57% | 4.57% | $375.56B | Nov 14, 2024 | ▲ 4.39M |
INVESCO LTD. semiconductors & related devices | 4.60M | 2.93% | 2.93% | $240.87B | Nov 12, 2024 | ▲ 3.16M |
FRED ALGER MANAGEMENT, LLC semiconductors & related devices | 2.82M | 1.80% | 1.80% | $147.84B | Nov 14, 2024 | ▲ 2.63M |
INTEL CORP semiconductors & related devices | 2.57M | 1.64% | 1.64% | $134.84B | Nov 12, 2024 | ▼ 3.33M |
BLACKROCK, INC. semiconductors & related devices | 2.23M | 1.42% | 1.42% | $116.93B | Nov 13, 2024 | NEW |
VANGUARD GROUP INC semiconductors & related devices | 2.03M | 1.29% | 1.29% | $106.09B | Nov 13, 2024 | ▲ 21.3K |
SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC semiconductors & related devices | 1.62M | 1.03% | 1.03% | $85.03B | Nov 14, 2024 | ▲ 682.4K |
JPMORGAN CHASE & CO semiconductors & related devices | 1.57M | 100.00% | 100.00% | $82.16B | Dec 26, 2024 | ▲ 147.6K |
MILLENNIUM MANAGEMENT LLC semiconductors & related devices | 1.17M | 74.35% | 74.35% | $61.09B | Nov 14, 2024 | ▲ 888.0K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2024 vs prior quarter
Q3 2024
29
Increased
+19.99M shares13
New Positions
first time holders4
Decreased
−3.83M shares0
Sold Out
fully exitedNet shares change (top 50)
+16.16M
+19.99M / −3.83M
Net new holders
+38
13 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
ALAB insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
5
Buy transactions
181
Sell transactions
0.03
Buy/Sell ratio
$2M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Dyckerhoff Stefan A director | Jun 3, 2026 | Sale | 7,314 | $364.25 | $2.66M | 320.8K | Form 4 ↗ |
Dyckerhoff Stefan A director | Jun 3, 2026 | Sale | 1,019 | $365.09 | $372.0K | 319.7K | Form 4 ↗ |
Dyckerhoff Stefan A director | Jun 4, 2026 | Award | 837 | — | — | 61.0K | Form 4 ↗ |
Dyckerhoff Stefan A director | Jun 3, 2026 | Sale | 3,077 | $364.25 | $1.12M | 60.6K | Form 4 ↗ |
Dyckerhoff Stefan A director | Jun 3, 2026 | Sale | 428 | $365.09 | $156.3K | 60.1K | Form 4 ↗ |
Dyckerhoff Stefan A director | Jun 3, 2026 | Sale | 580 | $364.25 | $211.3K | 5.4K | Form 4 ↗ |
Dyckerhoff Stefan A director | Jun 3, 2026 | Sale | 81 | $365.09 | $29.6K | 5.3K | Form 4 ↗ |
Gajendra Sanjay President and COO | May 21, 2026 | Sale | 136,709 | $289.13 | $39.53M | 5.33M | Form 4 ↗ |
Gajendra Sanjay President and COO | May 22, 2026 | Gift | 226,189 | — | — | 5.29M | Form 4 ↗ |
Gajendra Sanjay President and COO | May 21, 2026 | Sale | 137,294 | $290.21 | $39.84M | 5.19M | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Astera Labs, Inc. Common Stock (ALAB) is primarily owned by institutional investors, who hold approximately 43.3% of total shares outstanding. Company insiders own approximately 18.39%, while retail and public investors account for the remaining 38.33%.
The largest institutional shareholder of Astera Labs, Inc. Common Stock is FMR LLC, holding approximately 23.50 million shares — equal to 14.99% of outstanding shares — as of September 30, 2024.
A total of 286 institutional investors currently hold ALAB stock, with a combined institutional value of approximately $3.87 billion as of the most recent 13F filing period.
Frequently asked questions
ALAB ownershipAstera Labs, Inc. Common Stock (ALAB) is primarily owned by institutional investors, who hold approximately 43.3% of shares. The largest shareholder is FMR LLC with a 14.99% stake. Company insiders hold 18.39%. Data sourced from SEC Form 13F as of September 30, 2024.