Astera Labs · ownership
Who owns Astera Labs?
FMR LLC is the largest 13F holder: 19.4% of 13F-reported shares calc.
988 institutions report 127.8M Astera Labs shares in Form 13F, as of quarter end Jun 30, 2026; +6.9M shares vs Mar 31, 2026.
- FMR LLC19.4%24.8M shares · −685K vs prior quarter (down) · 13F filed Aug 13, 2026
- BlackRock, Inc.10.7%13.7M shares · +2.2M vs prior quarter (up) · 13F filed Aug 7, 2026
- VANGUARD PORTFOLIO MANAGEMENT LLC6.2%7.9M shares · +578K vs prior quarter (up) · 13F filed Aug 13, 2026
- VANGUARD CAPITAL MANAGEMENT LLC5.3%6.7M shares · +386K vs prior quarter (up) · 13F filed Aug 13, 2026
- Invesco Ltd.3.8%4.9M shares · +4.5M vs prior quarter (up) · 13F filed Aug 14, 2026
- STATE STREET CORP2.9%3.7M shares · +344K vs prior quarter (up) · 13F filed Aug 7, 2026
- GEODE CAPITAL MANAGEMENT, LLC2.2%2.8M shares · +288K vs prior quarter (up) · 13F filed Aug 12, 2026
- PRICE T ROWE ASSOCIATES INC /MD/1.9%2.4M shares · +1.8M vs prior quarter (up) · 13F filed Aug 14, 2026
- VAN ECK ASSOCIATES CORP1.8%2.2M shares · +374K vs prior quarter (up) · 13F filed Aug 14, 2026
- BANK OF AMERICA CORP /DE/1.7%2.2M shares · +410K vs prior quarter (up) · 13F filed Aug 14, 2026
- JPMORGAN CHASE & CO1.4%1.8M shares · +1.3M vs prior quarter (up) · 13F filed Aug 12, 2026
- MORGAN STANLEY1.3%1.7M shares · −46K vs prior quarter (down) · 13F filed Aug 13, 2026
- Amundi1.2%1.6M shares · −289K vs prior quarter (down) · 13F filed Aug 26, 2026
- Whale Rock Capital Management LLC1.2%1.6M shares · +1.6M vs prior quarter (new position) · 13F filed Aug 14, 2026
- NORGES BANK1.1%1.4M shares · +1.4M vs prior quarter (new position) · 13F filed Aug 12, 2026
- CITIGROUP INC1.1%1.4M shares · −161K vs prior quarter (down) · 13F filed Aug 3, 2026
- Rafferty Asset Management, LLC1.0%1.3M shares · +376K vs prior quarter (up) · 13F filed Aug 14, 2026
- FRED ALGER MANAGEMENT, LLC1.0%1.3M shares · −1.3M vs prior quarter (down) · 13F filed Aug 14, 2026
- GOLDMAN SACHS GROUP INC1.0%1.2M shares · −146K vs prior quarter (down) · 13F filed Aug 14, 2026
- Atreides Management, LP1.0%1.2M shares · −2.1M vs prior quarter (down) · 13F filed Aug 14, 2026
Share of 13F-reported shares, not of shares outstanding. 13F covers managers with over $100M in US equities; it is not a full shareholder list.
Method and sources
Source: SEC Form 13F data sets (bulk). Each row links to the holder’s own 13F-HR filing. Holder names exactly as filed; one group can file under several names and CIKs (for example two Vanguard entities), and they are listed separately, as filed.
% = the holder’s shares ÷ all shares reported in 13F filings for this company and quarter (calculated by Hollsteen). This is not a share of shares outstanding. Change = shares vs the same filer’s 13F for the prior quarter (Mar 31, 2026).
Erroneous filings and rows are handled by a fixed rule set (restatements replace originals; non-equity rows and implausible rows excluded): 8 erroneous filings excluded or replaced this quarter. No market values are shown.
SEC filings only. No price or market data.
Who holds more than 5%?
3 current Schedule 13D/13G holders
Schedule 13D/13G filings (7) ›
- FMR LLC 9.1%
13G/A filed Oct 7, 2026 · event date Sep 30, 2026 · 2 earlier filings
- BlackRock, Inc. 7.4%
13G/A filed Jul 27, 2026 · event date Jun 30, 2026 · 2 earlier filings
- Mohan Jitendra 5.4%
13G/A filed Nov 14, 2025 · event date Sep 30, 2025 · 1 earlier filing
- VANGUARD GROUP INC 0%
below 5% latest filing reports under 5% · 13G/A filed Mar 26, 2026 · event date Mar 13, 2026 · 2 earlier filings
- Gajendra Sanjay 4.5%
below 5% latest filing reports under 5% · 13G/A filed Nov 14, 2025 · event date Sep 30, 2025 · 1 earlier filing
- ALLIANCEBERNSTEIN L.P. 3.9%
below 5% latest filing reports under 5% · 13G/A filed Aug 13, 2025 · event date Jun 30, 2025 · 1 earlier filing
- Atreides Management, LP 1.2%
stale filed Feb 14, 2025, as of Dec 31, 2024: older than 18 months, not a current holding · 13G/A filed Feb 14, 2025 · 1 earlier filing
Method and sources
Schedule 13D (active) and 13G (passive) are filed by holders of more than 5% of a class. The percentage is the holder’s own cover-page “percent of class”. A filing older than 18 months (filed before 2025-04-17) is marked stale and is never shown as a current holding. Data as of Oct 13, 2026.
SEC filings only.
Are insiders buying or selling?
0 open-market purchases, 504 sales in 12 months
Form 4, Oct 13, 2025 – Oct 13, 2026 · 0 shares bought, 3,542,759 shares sold (net −3.5M) · as of Oct 13, 2026
Latest 25 of 1025 Form 4 transactions ›
| Date | Insider (as filed) | Transaction | Shares | Held after |
|---|---|---|---|---|
| Oct 7, 2026 | Dyckerhoff Stefan A · Director | Open-market sale · 10b5-1 | 3,505 disposed | 47,019 |
| Oct 7, 2026 | Dyckerhoff Stefan A · Director | Open-market sale · 10b5-1 | 8,333 disposed | 286,400 |
| Oct 7, 2026 | Dyckerhoff Stefan A · Director | Open-market sale · 10b5-1 | 661 disposed | 2,648 |
| Oct 1, 2026 | HURLSTON MICHAEL E. · Director | Grant or award | 72 acquired | 92,554 |
| Oct 1, 2026 | Dyckerhoff Stefan A · Director | Grant or award · 10b5-1 | 68 acquired | 50,524 |
| Oct 1, 2026 | BARRATT CRAIG H · Director | Grant or award | 68 acquired | 6,893 |
| Sep 2, 2026 | Dyckerhoff Stefan A · Director | Open-market sale · 10b5-1 | 273 disposed | 53,688 |
| Sep 2, 2026 | Dyckerhoff Stefan A · Director | Open-market sale · 10b5-1 | 650 disposed | 302,416 |
| Sep 2, 2026 | Dyckerhoff Stefan A · Director | Open-market sale · 10b5-1 | 52 disposed | 3,918 |
| Sep 2, 2026 | Dyckerhoff Stefan A · Director | Open-market sale · 10b5-1 | 2,275 disposed | 51,413 |
| Sep 2, 2026 | Dyckerhoff Stefan A · Director | Open-market sale · 10b5-1 | 5,409 disposed | 297,007 |
| Sep 2, 2026 | Dyckerhoff Stefan A · Director | Open-market sale · 10b5-1 | 429 disposed | 3,489 |
| Sep 2, 2026 | Dyckerhoff Stefan A · Director | Open-market sale · 10b5-1 | 785 disposed | 50,628 |
| Sep 2, 2026 | Dyckerhoff Stefan A · Director | Open-market sale · 10b5-1 | 1,867 disposed | 295,140 |
| Sep 2, 2026 | Dyckerhoff Stefan A · Director | Open-market sale · 10b5-1 | 148 disposed | 3,341 |
| Sep 2, 2026 | Dyckerhoff Stefan A · Director | Open-market sale · 10b5-1 | 172 disposed | 50,456 |
| Sep 2, 2026 | Dyckerhoff Stefan A · Director | Open-market sale · 10b5-1 | 407 disposed | 294,733 |
| Sep 2, 2026 | Dyckerhoff Stefan A · Director | Open-market sale · 10b5-1 | 32 disposed | 3,309 |
| Sep 1, 2026 | ALBA MANUEL · Director | Open-market sale · 10b5-1 | 2,575 disposed | 1,271,923 |
| Sep 1, 2026 | ALBA MANUEL · Director | Open-market sale · 10b5-1 | 20,991 disposed | 1,250,932 |
| Sep 1, 2026 | ALBA MANUEL · Director | Open-market sale · 10b5-1 | 37,176 disposed | 1,213,756 |
| Sep 1, 2026 | ALBA MANUEL · Director | Open-market sale · 10b5-1 | 59,379 disposed | 1,154,377 |
| Sep 1, 2026 | ALBA MANUEL · Director | Open-market sale · 10b5-1 | 12,882 disposed | 1,141,495 |
| Sep 1, 2026 | ALBA MANUEL · Director | Open-market sale · 10b5-1 | 5,870 disposed | 1,135,625 |
| Sep 1, 2026 | ALBA MANUEL · Director | Open-market sale · 10b5-1 | 3,954 disposed | 1,131,671 |
Method and sources
Form 4 filings (not 4/A), table I. Open market = transaction codes P (purchase) and S (sale); grants, option exercises, tax withholding and gifts are listed but not counted as buys or sells. Shares and share counts only, as filed; Hollsteen shows no per-share prices. Data is an export, as of Oct 13, 2026, not live.
SEC filings only.