Astera Labs, Inc. (ALAB) Ownership
ALAB ownership summary
as of October 18, 2026- Institutions
- 75.7% of shares outstanding
- Insiders
- 10.32% of shares outstanding
- Shares outstanding
- 173.5M
- Float
- 156.0M shares available to trade
- Short interest
- 6.94% 9.2M shares short
- Days to cover
- 2.29 short interest up 5.7% vs prior month
- Institutions 75.69%
- Insiders 10.32%
- Other investors 13.99%
ALAB top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | FMR Inc | 14.32% | 24.8M | $7.10B | −684,521 (−2.7%) | June 30, 2026 |
| 2 | BlackRock Inc | 7.89% | 13.7M | $3.91B | +2.2M (+19.5%) | June 30, 2026 |
| 3 | Vanguard Portfolio Management, LLC | 4.55% | 7.9M | $2.25B | +577,872 (+7.9%) | June 30, 2026 |
| 4 | Vanguard Capital Management, LLC | 3.88% | 6.7M | $1.92B | +386,357 (+6.1%) | June 30, 2026 |
| 5 | Amvescap Plc. | 2.83% | 4.9M | $1.40B | +4.5M (+1,226.5%) | June 30, 2026 |
| 6 | State Street Corp | 2.12% | 3.7M | $1.05B | +344,487 (+10.3%) | June 30, 2026 |
| 7 | Geode Capital Management, LLC | 1.61% | 2.8M | $799.2M | +287,909 (+11.5%) | June 30, 2026 |
| 8 | T. Rowe Price Associates, Inc. | 1.39% | 2.4M | $688.7M | +1.8M (+289.6%) | June 30, 2026 |
| 9 | Van Eck Associates Corporation | 1.29% | 2.2M | $639.7M | +373,545 (+20.0%) | June 30, 2026 |
| 10 | Bank of America Corp | 1.27% | 2.2M | $628.3M | +410,003 (+22.9%) | June 30, 2026 |
| 11 | JPMorgan Chase & Co | 1.02% | 1.8M | $507.6M | +1.3M (+312.6%) | June 30, 2026 |
| 12 | Morgan Stanley - Brokerage Accounts | 0.97% | 1.7M | $482.0M | −45,857 (−2.6%) | June 30, 2026 |
| 13 | Amundi | 0.92% | 1.6M | $455.0M | −288,942 (−15.4%) | June 30, 2026 |
| 14 | Whale Rock Capital Management LLC | 0.90% | 1.6M | $448.1M | +1.6M (0.0%) | June 30, 2026 |
| 15 | NORGES BANK | 0.83% | 1.4M | $410.0M | +1.1M (+310.2%) | June 30, 2026 |
| 16 | Citigroup Inc | 0.78% | 1.4M | $386.5M | −160,918 (−10.6%) | June 30, 2026 |
| 17 | Rafferty Asset Management, LLC | 0.76% | 1.3M | $377.7M | +375,913 (+39.8%) | June 30, 2026 |
| 18 | Fred Alger Management, LLC | 0.74% | 1.3M | $366.9M | −1.3M (−50.1%) | June 30, 2026 |
| 19 | The Goldman Sachs Group Inc | 0.71% | 1.2M | $352.7M | −145,962 (−10.6%) | June 30, 2026 |
| 20 | Atreides Management, LP | 0.70% | 1.2M | $347.8M | −2.1M (−63.8%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 13 holders added 15.3M shares and 7 cut 4.8M.
ALAB top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Fidelity Select Semiconductors | 4.06% | 7.0M | $2.01B | −803,500 (−10.2%) | August 31, 2026 |
| 2 | Vanguard MStar Total Stk Mkt Idx Invest | 2.83% | 4.9M | $1.40B | −9,361 (−0.2%) | August 31, 2026 |
| 3 | Invesco QQQ Trust | 2.09% | 3.6M | $1.04B | −5,918 (−0.2%) | September 30, 2026 |
| 4 | iShares Semiconductor ETF | 1.94% | 3.4M | $962.0M | −33,898 (−1.0%) | September 30, 2026 |
| 5 | VanEck Semiconductor ETF | 1.36% | 2.4M | $676.8M | +13,468 (+0.6%) | September 30, 2026 |
| 6 | Fidelity Blue Chip Growth | 1.05% | 1.8M | $518.6M | −57,100 (−3.1%) | August 31, 2026 |
| 7 | Vanguard Small Cap Index | 1.02% | 1.8M | $507.3M | +1,810 (+0.1%) | August 31, 2026 |
| 8 | Vanguard MStar Mid Cap Index Instl | 0.96% | 1.7M | $476.9M | −893 (−0.1%) | August 31, 2026 |
| 9 | Fidelity Growth Company Fund | 0.85% | 1.5M | $422.0M | −110,900 (−7.0%) | August 31, 2026 |
| 10 | Direxion Daily Semicondct Bull 3X ETF | 0.68% | 1.2M | $335.0M | −7,084 (−0.6%) | September 30, 2026 |
| 11 | Vanguard Information Technology ETF | 0.66% | 1.1M | $326.2M | −67,924 (−5.6%) | August 31, 2026 |
| 12 | Fidelity Advisor Semiconductors I | 0.61% | 1.1M | $301.9M | −176,600 (−14.3%) | August 31, 2026 |
| 13 | Vanguard MStar Small Cap Growth Indx Inv | 0.59% | 1.0M | $291.1M | −6,947 (−0.7%) | August 31, 2026 |
| 14 | Fidelity Select Technology | 0.57% | 988K | $282.5M | −866,400 (−46.7%) | August 31, 2026 |
| 15 | Vanguard MStar Growth Index Investor | 0.56% | 972K | $277.7M | −1,591 (−0.2%) | August 31, 2026 |
| 16 | iShares Russell Mid-Cap Growth ETF | 0.50% | 861K | $246.2M | −921 (−0.1%) | September 30, 2026 |
| 17 | Invesco NASDAQ 100 ETF | 0.46% | 798K | $227.9M | +1,848 (+0.2%) | September 30, 2026 |
| 18 | Fidelity Advisor Growth Opps M | 0.44% | 769K | $219.8M | +191,800 (+33.2%) | August 31, 2026 |
| 19 | Xtrackers S&P 500 Swap ETF 1C | 0.41% | 707K | $202.2M | +39,783 (+6.0%) | December 31, 2025 |
| 20 | Fidelity Extended Market Index | 0.38% | 651K | $186.2M | −10,669 (−1.6%) | August 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
ALAB insider transactions
latest 20| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2026-04-20 | Stefan A Dyckerhoff | Sell | $175.12 | 3,757 | $657,926 |
| 2026-04-20 | Stefan A Dyckerhoff | Sell | $175.12 | 9,642 | $1.7M |
| 2026-04-20 | Jitendra Mohan | Sell | $175.45 | 10,188 | $1.8M |
| 2026-04-17 | Jitendra Mohan | Sell | $172.14 | 325,693 | $56.1M |
| 2026-04-17 | Stefan A Dyckerhoff | Sell | $175.00 | 3,253 | $569,275 |
| 2026-04-17 | Stefan A Dyckerhoff | Sell | $175.00 | 8,346 | $1.5M |
| 2026-04-15 | Jitendra Mohan | Sell | $174.60 | 2,967 | $518,038 |
| 2026-04-10 | Jitendra Mohan | Sell | $149.68 | 123,750 | $18.5M |
| 2026-04-01 | Manuel Alba | Sell | $107.61 | 183,000 | $19.7M |
| 2026-04-01 | Philip Mazzara | Sell | $107.77 | 10,000 | $1.1M |
| 2026-03-17 | Jitendra Mohan | Sell | $131.58 | 157,500 | $20.7M |
| 2026-03-16 | Jack R Lazar | Sell | $130.00 | 2,500 | $325,000 |
| 2026-03-05 | Jack R Lazar | Sell | $119.80 | 7,500 | $898,500 |
| 2026-03-02 | Philip Mazzara | Sell | $117.47 | 10,000 | $1.2M |
| 2026-02-17 | Jitendra Mohan | Sell | $123.81 | 94,971 | $11.8M |
| 2026-02-17 | Michael Truett Tate | Sell | $123.81 | 12,001 | $1.5M |
| 2026-02-17 | Philip Mazzara | Sell | $123.80 | 4,849 | $600,306 |
| 2026-02-17 | Sanjay Gajendra | Sell | $123.81 | 94,971 | $11.8M |
| 2025-12-01 | Manuel Alba | Sell | $166.18 | 33,000 | $5.5M |
| 2025-12-01 | Manuel Alba | Sell | $166.18 | 150,000 | $24.9M |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
ALAB shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns ALAB
Institutional investors own 75.7% of Astera Labs's shares and insiders 10.32%. The largest holder is FMR Inc with 14.32% of the shares (24.8M), as of June 30, 2026. Among the top 20 institutions, 13 added shares and 7 reduced their stake in the latest filings. Short interest is 6.94% of the float, or 2.29 days of average trading volume. The share count rose 430.2% since 2022.
Related: ALAB analyst forecast, ALAB key metrics. See the ALAB stock overview for the latest quote and news.
ALAB ownership FAQ
Who owns the most Astera Labs stock?
The largest shareholders of Astera Labs are FMR Inc (14.32%), BlackRock Inc (7.89%), Vanguard Portfolio Management, LLC (4.55%), Vanguard Capital Management, LLC (3.88%), Amvescap Plc. (2.83%).
What percentage of Astera Labs is owned by institutions?
Institutions hold 75.7% of Astera Labs's shares outstanding; insiders hold 10.32%.
Which funds own Astera Labs?
The largest fund holders of Astera Labs are Fidelity Select Semiconductors (4.06%), Vanguard MStar Total Stk Mkt Idx Invest (2.83%), Invesco QQQ Trust (2.09%), iShares Semiconductor ETF (1.94%), VanEck Semiconductor ETF (1.36%).
What is Astera Labs's short interest?
9.2M shares of Astera Labs were sold short, 6.94% of the float; at the average daily volume it would take 2.29 days to cover.
Are insiders buying or selling Astera Labs?
Of the latest 20 reported insider transactions in Astera Labs (since December 1, 2025), 0 were purchases and 20 were sales.
How many shares of Astera Labs are outstanding?
Astera Labs has 173.5M shares outstanding, of which 156.0M are in the public float.