ASTERA LABS INC (ALAB)
Institutional ownership reported to the SEC as of Q2 2026, across 10 quarters.
956
Reporting holders
$70.2B
Reported value
71.4%
Of shares outstanding
15.5%
Held as options
+282
Holder change
Institutions report 123,890,005 shares against 173,485,104 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end.
Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| FMR LLC | $12.0B | 24,845,364 | 0.52% | 10q | -2.7%-$330.6M |
| BlackRock, Inc. | $6.6B | 13,683,865 | 0.10% | 8q | +19.5%+$1.1B |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $3.8B | 7,887,650 | 0.17% | 2q | +7.9%+$279.1M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $3.4B | 272,491 | 0.27% | 10q | -55.4%-$4.2B |
| VANGUARD CAPITAL MANAGEMENT LLC | $3.2B | 6,727,089 | 0.07% | 2q | +6.1%+$186.6M |
| Invesco Ltd. | $2.4B | 4,910,555 | 0.19% | 10q | +1226.5%+$2.2B |
| JANE STREET GROUP, LLC | $2.1B | 9,312 | 0.18% | 10q | +114.5%+$1.1B |
| CITADEL ADVISORS LLC | $1.9B | options only | 0.22% | 10q | OPTIONS |
| STATE STREET CORP | $1.8B | 3,678,093 | 0.05% | 9q | +10.3%+$166.4M |
| GEODE CAPITAL MANAGEMENT, LLC | $1.3B | 2,796,173 | 0.07% | 10q | +11.5%+$138.7M |
| VAN ECK ASSOCIATES CORP | $1.1B | 2,237,961 | 0.66% | 8q | +20.0%+$180.4M |
| BANK OF AMERICA CORP /DE/ | $1.1B | 2,198,235 | 0.07% | 10q | +22.9%+$198.0M |
| IMC-Chicago, LLC | $1.1B | options only | 0.25% | 10q | OPTIONS |
| JPMORGAN CHASE & CO | $835.3M | 1,775,810 | 0.05% | 10q | +312.6%+$632.9M |
| MORGAN STANLEY | $814.6M | 1,686,491 | 0.04% | 10q | -2.6%-$22.1M |
| Amundi | $768.9M | 1,591,888 | 0.19% | 8q | -15.4%-$139.6M |
| Whale Rock Capital Management LLC | $757.3M | 1,567,882 | 6.08% | new | NEW |
| GOLDMAN SACHS GROUP INC | $718.8M | 1,234,152 | 0.06% | 9q | -10.6%-$85.0M |
| NORGES BANK | $692.8M | 1,434,347 | 0.07% | 6q | +310.2%+$523.9M |
| CITIGROUP INC | $653.1M | 1,352,136 | 0.22% | 9q | -10.6%-$77.7M |
| Rafferty Asset Management, LLC | $638.3M | 1,321,419 | 1.45% | 4q | +39.8%+$181.6M |
| FRED ALGER MANAGEMENT, LLC | $620.1M | 1,283,840 | 2.07% | 10q | -50.1%-$622.7M |
| Atreides Management, LP | $587.7M | 1,216,795 | 4.10% | 10q | -63.8%-$1.0B |
| BARCLAYS PLC | $580.1M | 1,130,944 | 0.11% | 10q | -27.2%-$217.1M |
| MAVERICK CAPITAL LTD | $515.5M | 1,067,215 | 4.55% | 10q | +11.7%+$54.0M |
| UBS Group AG | $477.6M | 802,024 | 0.06% | 10q | -44.4%-$381.5M |
| D. E. Shaw & Co., Inc. | $471.5M | 680,298 | 0.22% | 7q | -55.2%-$581.6M |
| FEDERATED HERMES, INC. | $453.2M | 938,311 | 0.65% | 7q | +244.6%+$321.7M |
| VANGUARD FIDUCIARY TRUST CO | $427.4M | 884,834 | 0.09% | 2q | +3.9%+$16.0M |
| Tidal Investments LLC | $424.9M | 494,315 | 0.74% | 9q | +21.2%+$74.4M |
| NORTHERN TRUST CORP | $420.6M | 870,775 | 0.05% | 9q | +8.2%+$31.9M |
| FULLER & THALER ASSET MANAGEMENT, INC. | $414.1M | 857,286 | 1.13% | 7q | +2.7%+$10.9M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $412.7M | 854,492 | 0.08% | 10q | +31.6%+$99.2M |
| NOMURA ASSET MANAGEMENT CO LTD | $411.7M | 852,312 | 0.88% | 7q | +89.1%+$194.0M |
| MILLENNIUM MANAGEMENT LLC | $393.4M | 604,489 | 0.14% | 10q | +174.3%+$249.9M |
| BNP PARIBAS FINANCIAL MARKETS | $388.3M | 792,380 | 0.13% | 9q | -56.3%-$500.5M |
| Artisan Partners Limited Partnership | $375.5M | 274,306 | 0.60% | 3q | -51.1%-$391.8M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $362.1M | 749,607 | 0.05% | 9q | +13.3%+$42.6M |
| Sixth Street Partners Management Company, L.P. | $362.1M | 749,607 | 0.05% | new | NEW |
| DEUTSCHE BANK AG\ | $325.6M | 674,096 | 0.09% | 9q | -7.8%-$27.4M |
| Legal & General Group Plc | $311.5M | 644,847 | 0.06% | 9q | -10.5%-$36.4M |
| Capital World Investors | $297.7M | 616,374 | 0.04% | 10q | +2.7%+$7.9M |
| Squarepoint Ops LLC | $297.5M | 317,208 | 0.33% | 10q | +124.1%+$164.7M |
| FIRST TRUST ADVISORS LP | $280.5M | 580,688 | 0.16% | 9q | +143.0%+$165.1M |
| Value Aligned Research Advisors, LLC | $274.5M | 568,316 | 0.68% | 7q | HELD |
| Clear Street Group Inc. | $260.5M | 539,212 | 0.66% | 4q | +7.9%+$19.1M |
| CANADA PENSION PLAN INVESTMENT BOARD | $254.7M | 527,400 | 0.14% | 7q | -12.2%-$35.3M |
| TUDOR INVESTMENT CORP ET AL | $251.6M | 361,000 | 0.35% | 8q | +866.6%+$225.6M |
| Walleye Trading LLC | $250.1M | options only | 0.29% | 10q | OPTIONS |
| Bank of New York Mellon Corp | $241.0M | 498,996 | 0.04% | 9q | +4.9%+$11.3M |
| 1832 Asset Management L.P. | $218.2M | 451,800 | 0.11% | 7q | -46.9%-$192.7M |
| SIMPLEX TRADING, LLC | $210.6M | 10,006 | 0.12% | 10q | -89.1%-$1.7B |
| Swiss National Bank | $185.5M | 383,964 | 0.10% | 5q | -1.6%-$3.0M |
| GROUP ONE TRADING LLC | $177.3M | options only | 0.25% | 10q | OPTIONS |
| Capital Impact Advisors, LLC | $168.4M | 348,617 | 9.44% | new | NEW |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | $166.9M | 345,575 | 0.17% | 5q | +41.9%+$49.3M |
| Strategy Capital LLC | $165.4M | 342,338 | 10.19% | 2q | -2.8%-$4.8M |
| Valliance Asset Management Ltd | $162.9M | 337,150 | 18.84% | new | NEW |
| NEUBERGER BERMAN GROUP LLC | $159.3M | 331,269 | 0.11% | 6q | +10439.9%+$157.8M |
| Nuveen, LLC | $157.8M | 326,756 | 0.04% | 6q | +16.7%+$22.5M |
| Sumitomo Mitsui Trust Group, Inc. | $156.0M | 322,919 | 0.09% | 7q | +9.9%+$14.0M |
| FRANKLIN RESOURCES INC | $152.7M | 316,146 | 0.03% | 7q | +1113.7%+$140.1M |
| Qube Research & Technologies Ltd | $150.4M | 311,438 | 0.14% | 2q | +786.7%+$133.5M |
| AMERICAN CENTURY COMPANIES INC | $146.6M | 303,470 | 0.06% | 10q | +23.4%+$27.8M |
| PEAK6 LLC | $145.7M | 1 | 0.30% | 7q | HELD |
| Mirae Asset Global Investments Co., Ltd. | $144.6M | 299,405 | 0.21% | 7q | -23.7%-$45.0M |
| VANGUARD ASSET MANAGEMENT, Ltd | $141.4M | 292,659 | 0.10% | 2q | +31.5%+$33.9M |
| AMAZON COM INC | $134.2M | 277,777 | 3.03% | 10q | HELD |
| DIMENSIONAL FUND ADVISORS LP | $127.9M | 264,763 | 0.02% | 8q | -5.7%-$7.7M |
| AMERIPRISE FINANCIAL INC | $126.2M | 257,702 | 0.03% | 10q | -32.4%-$60.5M |
| California Public Employees Retirement System | $124.7M | 258,178 | 0.07% | 6q | +22.0%+$22.5M |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | $124.5M | 257,702 | 0.10% | 9q | -52.1%-$135.5M |
| Stephens Investment Management Group LLC | $123.2M | 254,996 | 1.32% | 4q | -5.5%-$7.2M |
| Analog Century Management LP | $122.5M | 253,619 | 4.48% | 3q | -49.7%-$121.1M |
| WESTFIELD CAPITAL MANAGEMENT CO LP | $120.4M | 249,299 | 0.39% | 4q | -71.0%-$295.0M |
| WELLINGTON MANAGEMENT GROUP LLP | $120.2M | 248,914 | 0.02% | 8q | +151.5%+$72.4M |
| NOMURA HOLDINGS INC | $115.0M | 153,166 | 0.13% | 4q | +1670.9%+$108.5M |
| Jain Global LLC | $113.5M | options only | 0.45% | 3q | OPTIONS |
| ALLIANCEBERNSTEIN L.P. | $111.5M | 1,017,008 | 0.04% | 10q | -59.5%-$163.9M |
| BAILLIE GIFFORD & CO | $105.5M | 218,430 | 0.10% | 5q | -10.9%-$12.9M |
| VICTORY CAPITAL MANAGEMENT INC | $104.7M | 216,686 | 0.06% | 9q | +76.7%+$45.4M |
| National Pension Service | $101.2M | 209,418 | 0.07% | 3q | -20.6%-$26.3M |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | $100.9M | 208,919 | 0.03% | new | NEW |
| Mitsubishi UFJ Asset Management Co., Ltd. | $97.9M | 202,725 | 0.05% | 9q | +8.6%+$7.8M |
| ALKEON CAPITAL MANAGEMENT LLC | $96.6M | 200,000 | 0.13% | 8q | HELD |
| E Fund Management Co., Ltd. | $95.1M | 196,877 | 2.13% | new | NEW |
| Driehaus Capital Management LLC | $94.0M | 194,619 | 0.54% | new | NEW |
| Point72 Asset Management, L.P. | $93.1M | 13,517 | 0.10% | 5q | HELD |
| ROYAL BANK OF CANADA | $93.0M | 192,518 | 0.01% | 10q | +45.5%+$29.1M |
| Defiance ETFs, LLC | $91.7M | 212,915 | 1.25% | 3q | -19.8%-$22.6M |
| RHUMBLINE ADVISERS | $88.5M | 183,274 | 0.07% | 9q | +15.5%+$11.9M |
| WELLS FARGO & COMPANY/MN | $86.4M | 178,958 | 0.01% | 10q | -31.4%-$39.7M |
| SALEM INVESTMENT COUNSELORS INC | $86.4M | 178,908 | 2.14% | 5q | -3.2%-$2.9M |
| WT Asset Management Ltd | $86.3M | 178,711 | 1.71% | new | NEW |
| TimesSquare Capital Management, LLC | $84.9M | 175,869 | 1.25% | new | NEW |
| SEI INVESTMENTS CO | $83.7M | 173,226 | 0.07% | 10q | -29.5%-$35.0M |
| ProShare Advisors LLC | $81.4M | 168,485 | 0.12% | 4q | +1316.0%+$75.6M |
| LPL Financial LLC | $78.3M | 157,094 | 0.02% | 10q | -23.0%-$23.4M |
| Connor, Clark & Lunn Investment Management Ltd. | $78.0M | 161,443 | 0.15% | new | NEW |
| RAYMOND JAMES FINANCIAL INC | $76.8M | 158,948 | 0.02% | 7q | +63.6%+$29.8M |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-07-27 | 13G/A | BlackRock, Inc. | 7.4% |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 956 | $70.2B | 123,890,005 | 355 | 265 | 246 | 15.5% |
| Q1 2026 | 674 | $15.0B | 117,976,277 | 114 | 252 | 203 | 13.1% |
| Q4 2025 | 674 | $22.3B | 114,290,909 | 134 | 255 | 180 | 14.9% |
| Q3 2025 | 629 | $25.7B | 109,266,059 | 219 | 163 | 189 | 16.6% |
| Q2 2025 | 479 | $10.2B | 100,862,039 | 165 | 187 | 85 | 10.8% |
| Q1 2025 | 365 | $6.5B | 97,373,249 | 83 | 153 | 91 | 10.2% |
| Q4 2024 | 390 | $13.6B | 91,981,592 | 171 | 92 | 74 | 10.5% |
| Q3 2024 | 231 | $4.2B | 74,218,823 | 114 | 70 | 22 | 8.0% |
| Q2 2024 | 143 | $3.3B | 51,578,603 | 67 | 35 | 21 | 4.3% |
| Q1 2024 | 123 | $3.2B | 41,883,163 | 127 | 0 | 0 | 2.4% |