ALAB Institutional Ownership
Who owns Astera Labs, Inc. and what the big funds did with it last quarter, from every SEC 13F filing. 992 funds reported holding ALAB at Jun 30, 2026, together owning 73.6% of the company.
- ▲648 buying vs 343 selling
- ▲Held by funds +3.9 pts
- ▲Funds holding +279
- ▲Superinvestors: 3 added, 2 cut
- ▲Put/call 1.41 to 1.06
What the filings show, not a forecast. Positions can be up to 45 days old and leave out short sales.
Funds holding and ownership
8 quartersQuarter over quarter
all 13F filers| Q2 2026 | This quarter | Q1 2026 | Change |
|---|---|---|---|
| Funds holding | 992 | 713 | +39.1% |
| In funds' top 10 | 34 | 6 | +466.7% |
| 13F shares | 128M | 121M | +5.6% |
| Held by funds | 73.6% | 69.7% | +3.9 pts |
| New positions | 362 | 123 | +194.3% |
| Increased | 286 | 269 | +6.3% |
| Reduced | 259 | 221 | +17.2% |
| Sold out | 84 | 123 | −31.7% |
| Calls (shares) | 1.7M | 1.1M | +52.7% |
| Puts (shares) | 1.8M | 1.6M | +15.3% |
| Put/call ratio | 1.06 | 1.41 | −24.6% |
Buyers vs sellers
adding or new vs cutting or sold outSuperinvestors in ALAB
All superinvestors →
Who owns ALAB
share of fund held shares- Index and passive funds36.4%
- Active managers and hedge funds46.6%
- Banks and brokers13.8%
- Pensions, insurers and other3.1%
The top 10 holders own 55.9% of all ALAB shares that funds reported. Groups are our own grouping of filers by name.
Put/call ratio
funds' options, market makers left outAbove 1 means funds hold more puts than calls, a sign of hedging or bets on a fall. Options are valued at the underlying shares.
Filed so far for Q3 2026
343 funds changed their position- Valliance Asset Management LtdSold out−337K sh
- WT Asset Management LtdSold out−179K sh
- Virtus Wealth Solutions LLCTrimmed−109K sh
- Mirae Asset Global Investments Co., Ltd.Added+78K sh
- FengHe Fund Management Pte. Ltd.Added+64K sh
🔒 Free account: see all 20.
Top holders
Q2 2026| # | Fund | Of company | Shares | Value | Change |
|---|---|---|---|---|---|
| 1 | Fmr LLC | 14.32% | 24.8M | $12B | −685K |
| 2 | BlackRock, Inc. | 7.89% | 13.7M | $6.6B | +2.2M |
| 3 | Vanguard Portfolio Management LLC | 4.55% | 7.9M | $3.8B | +578K |
| 4 | Vanguard Capital Management LLC | 3.88% | 6.7M | $3.2B | +386K |
| 5 | Invesco Ltd. | 2.83% | 4.9M | $2.4B | +4.5M |
| 6 | State Street Corp | 2.12% | 3.7M | $1.8B | +344K |
| 7 | Geode Capital Management, LLC | 1.61% | 2.8M | $1.3B | +288K |
| 8 | Price T Rowe Associates Inc /md/ | 1.39% | 2.4M | $1.2B | +1.8M |
| 9 | Van Eck Associates Corp | 1.29% | 2.2M | $1.1B | +374K |
| 10 | Bank of America Corp /de/ | 1.27% | 2.2M | $1.1B | +410K |
- Invesco Ltd.+4.5M sh+$2.2B
- BlackRock, Inc.+2.2M sh+$1.1B
- Price T Rowe Associates Inc /md/+1.8M sh+$865M
- Whale Rock Capital Management LLC+1.6M sh+$757M
- Norges Bank+1.4M sh+$693M
- Jpmorgan Chase & Co+1.3M sh+$613M
- T. Rowe Price Investment Management, Inc.+870K sh+$420M
- Federated Hermes, Inc.+666K sh+$322M
- Atreides Management, LP−2.1M sh−$1B
- Fred Alger Management, LLC−1.3M sh−$623M
- Bnp Paribas Financial Markets−1M sh−$493M
- D. E. Shaw & Co., Inc.−839K sh−$405M
- Bridgewater Associates, LP−750K sh−$362M
- Two Sigma Investments, LP−696K sh−$336M
- Fmr LLC−685K sh−$331M
- UBS Group AG−641K sh−$309M
ALAB institutional ownership FAQ
Who owns the most ALAB stock?
In Q2 2026 13F filings the largest holder of ALAB was Fmr LLC, followed by BlackRock, Inc. and Vanguard Portfolio Management LLC. Index fund managers are usually the biggest holders of large companies.
What percentage of ALAB is owned by institutions?
Funds that file 13F reports held 73.6% of ALAB's shares at Jun 30, 2026, compared with 69.7% a quarter earlier. That counts every manager with more than $100 million in US stocks.
Are hedge funds buying ALAB?
In Q2 2026, 648 funds bought ALAB (362 of them new positions) and 343 sold (84 sold out completely). Among well known investors, 3 added and 2 cut. Our fund sentiment for ALAB is strongly bullish.
What is ALAB's institutional put/call ratio?
Funds reported $872M of ALAB puts against $822M of calls, a put/call ratio of 1.06 (1.41 the quarter before). Market makers and bank trading desks are left out, since their options are mostly hedges.
How current is this ALAB ownership data?
13F filings show holdings at the end of each quarter and are due within 45 days, so positions can be up to six weeks old when they appear. We add each new filing within minutes, and the "filed so far" list shows funds that have already reported the next quarter.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Fund sentiment summarises what 13F filings show and is not a forecast. Holdings come from SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.