A
Astera Labs
ALAB · AI Networking
$350.62
-11.16 (-3.08%)
As of Jul 15, 2026 close
Institutional Ownership — Q1 2026 (filed through May 26)
Institutional Holders
692
+0 vs Q4 2025
Shares Held
120.6M
+4.5M QoQ
% of Shares Out
25.5%
43.8M held with sole discretion
Value Held
$42.3B
at $350.62 · Jul 15, 2026 close
5%+ Owners
3
via 13G/13D
% of Shares Out counts only shares held with sole investment discretion. Where two managers share discretion, Form 13F requires each to report the full position, so summing every filer exceeds 100% of shares outstanding for widely-held names.
Holder Map
Block size ∝ position · color = QoQ changeWhale Activity — Q1 2026 Filings
Increased265
Decreased210
New position136
Closed136
Institutional Shares Held by Quarter
Holders
Sortable · search holders| Source | % of Shrs Out | Period | |||||
|---|---|---|---|---|---|---|---|
| FMR LLC | 13F | 25,529,885 | +194,944 +0.8% | $2.8B | 14.9% | Mar 31, 2026 | |
| BlackRock, Inc. | 13F | 11,449,769 | -1,519,089 -11.7% | $1.3B | 6.7% | Mar 31, 2026 | |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 13F | 7,309,778 | +7,309,778 new | $801.2M | 4.3% | Mar 31, 2026 | |
| VANGUARD CAPITAL MANAGEMENT LLC | 13F | 6,340,732 | +6,340,732 new | $694.9M | 3.7% | Mar 31, 2026 | |
| Atreides Management, LP | 13F | 3,365,787 | +1,754,593 +108.9% | $368.9M | 2.0% | Mar 31, 2026 | |
| STATE STREET CORP | 13F | 3,333,606 | +233,797 +7.5% | $365.4M | 1.9% | Mar 31, 2026 | |
| FRED ALGER MANAGEMENT, LLC | 13F | 2,573,005 | +638,317 +33.0% | $282.0M | 1.5% | Mar 31, 2026 | |
| ALLIANCEBERNSTEIN L.P. | 13F | 2,512,695 | +334,900 +15.4% | $418.0M | 1.5% | Mar 31, 2026 | |
| GEODE CAPITAL MANAGEMENT, LLC | 13F | 2,508,264 | +79,186 +3.3% | $274.2M | 1.5% | Mar 31, 2026 | |
| Amundi | 13F | 1,880,830 | +823,477 +77.9% | $206.1M | 1.1% | Mar 31, 2026 | |
| VAN ECK ASSOCIATES CORP | 13F | 1,864,416 | +1,819,597 +4059.9% | $204.3M | 1.1% | Mar 31, 2026 | |
| BNP PARIBAS FINANCIAL MARKETS | 13F | 1,813,818 | +1,016,432 +127.5% | $198.8M | 1.1% | Mar 31, 2026 | |
| BANK OF AMERICA CORP /DE/ | 13F | 1,788,232 | +299,415 +20.1% | $196.0M | 1.0% | Mar 31, 2026 | |
| MORGAN STANLEY | 13F | 1,732,348 | -202,119 -10.4% | $189.9M | 1.0% | Mar 31, 2026 | |
| BARCLAYS PLC | 13F | 1,554,180 | +404,100 +35.1% | $170.3M | 0.9% | Mar 31, 2026 | |
| D. E. Shaw & Co., Inc. | 13F | 1,519,561 | -932,819 -38.0% | $166.5M | 0.9% | Mar 31, 2026 | |
| CITIGROUP INC | 13F | 1,513,054 | +584,724 +63.0% | $165.8M | 0.9% | Mar 31, 2026 | |
| UBS Group AG | 13F | 1,442,578 | -111,378 -7.2% | $158.1M | 0.8% | Mar 31, 2026 | |
| GOLDMAN SACHS GROUP INC | 13F | 1,380,114 | +67,187 +5.1% | $151.3M | 0.8% | Mar 31, 2026 | |
| MAVERICK CAPITAL LTD | 13F | 955,356 | -20,603 -2.1% | $104.7M | 0.6% | Mar 31, 2026 | |
| Rafferty Asset Management, LLC | 13F | 945,506 | -221,210 -19.0% | $103.6M | 0.6% | Mar 31, 2026 | |
| WESTFIELD CAPITAL MANAGEMENT CO LP | 13F | 860,113 | +664,819 +340.4% | $94.3M | 0.5% | Mar 31, 2026 | |
| VANGUARD FIDUCIARY TRUST CO | 13F | 851,761 | +851,761 new | $93.4M | 0.5% | Mar 31, 2026 | |
| 1832 Asset Management L.P. | 13F | 850,700 | -496,300 -36.8% | $93.2M | 0.5% | Mar 31, 2026 | |
| FULLER & THALER ASSET MANAGEMENT, INC. | 13F | 834,660 | +11,087 +1.3% | $91.5M | 0.5% | Mar 31, 2026 | |
| NORTHERN TRUST CORP | 13F | 804,661 | +43,301 +5.7% | $88.2M | 0.5% | Mar 31, 2026 | |
| Bridgewater Associates, LP | 13F | 750,940 | +510,410 +212.2% | $82.3M | 0.4% | Mar 31, 2026 | |
| TWO SIGMA INVESTMENTS, LP | 13F | 744,309 | +110,935 +17.5% | $81.6M | 0.4% | Mar 31, 2026 | |
| DEUTSCHE BANK AG\ | 13F | 730,905 | -250,807 -25.5% | $80.1M | 0.4% | Mar 31, 2026 | |
| Legal & General Group Plc | 13F | 720,256 | +187,184 +35.1% | $78.9M | 0.4% | Mar 31, 2026 | |
| FRONTIER CAPITAL MANAGEMENT CO LLC | 13F | 688,213 | -47,128 -6.4% | $75.4M | 0.4% | Mar 31, 2026 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 13F | 661,505 | +27,565 +4.3% | $72.5M | 0.4% | Mar 31, 2026 | |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 13F | 649,191 | +72,910 +12.7% | $71.2M | 0.4% | Mar 31, 2026 | |
| PRICE T ROWE ASSOCIATES INC /MD/ | 13F | 618,499 | -545,915 -46.9% | $67.8M | 0.4% | Mar 31, 2026 | |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 13F | 610,669 | +232,665 +61.6% | $66.9M | 0.4% | Mar 31, 2026 | |
| CANADA PENSION PLAN INVESTMENT BOARD | 13F | 600,500 | +521,400 +659.2% | $65.8M | 0.4% | Mar 31, 2026 | |
| Capital World Investors | 13F | 600,000 | +0 +0.0% | $65.8M | 0.4% | Mar 31, 2026 | |
| Value Aligned Research Advisors, LLC | 13F | 568,316 | +0 +0.0% | $62.3M | 0.3% | Mar 31, 2026 | |
| Artisan Partners Limited Partnership | 13F | 560,579 | -334,951 -37.4% | $61.4M | 0.3% | Mar 31, 2026 | |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | 13F | 538,205 | +238,911 +79.8% | $59.0M | 0.3% | Mar 31, 2026 | |
| Analog Century Management LP | 13F | 504,301 | +195,288 +63.2% | $55.3M | 0.3% | Mar 31, 2026 | |
| Clear Street Group Inc. | 13F | 499,772 | -77,439 -13.4% | $54.8M | 0.3% | Mar 31, 2026 | |
| Bank of New York Mellon Corp | 13F | 475,520 | -25,922 -5.2% | $52.1M | 0.3% | Mar 31, 2026 | |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 13F | 453,741 | +285,000 +168.9% | $49.7M | 0.3% | Mar 31, 2026 | |
| NOMURA ASSET MANAGEMENT CO LTD | 13F | 450,628 | -22,551 -4.8% | $49.4M | 0.3% | Mar 31, 2026 | |
| JANUS HENDERSON GROUP PLC | 13F | 433,165 | +421,755 +3696.4% | $47.4M | 0.3% | Mar 31, 2026 | |
| JPMORGAN CHASE & CO | 13F | 430,389 | -273,080 -38.8% | $43.2M | 0.3% | Mar 31, 2026 | |
| Tidal Investments LLC | 13F | 407,732 | +280,499 +220.5% | $44.7M | 0.2% | Mar 31, 2026 | |
| Swiss National Bank | 13F | 390,164 | +25,800 +7.1% | $42.8M | 0.2% | Mar 31, 2026 | |
| Invesco Ltd. | 13F | 370,180 | -167,310 -31.1% | $40.6M | 0.2% | Mar 31, 2026 |
Page 1 of 14
Derivatives Institutional Owners
13F put/call positions · excluded from ownership totals| Type | Period | |||||
|---|---|---|---|---|---|---|
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Call | 3,799,000 | +593,700 +18.5% | $416.4M | Mar 31, 2026 | |
| JANE STREET GROUP, LLC | Put | 2,589,700 | +306,800 +13.4% | $283.8M | Mar 31, 2026 | |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Put | 2,391,800 | -386,200 -13.9% | $262.1M | Mar 31, 2026 | |
| JANE STREET GROUP, LLC | Call | 1,140,300 | +92,900 +8.9% | $125.0M | Mar 31, 2026 | |
| CITADEL ADVISORS LLC | Call | 1,007,000 | -110,700 -9.9% | $110.4M | Mar 31, 2026 | |
| CITADEL ADVISORS LLC | Put | 998,000 | -57,500 -5.4% | $109.4M | Mar 31, 2026 | |
| Tidal Investments LLC | Put | 400,000 | +400,000 new | $43.8M | Mar 31, 2026 | |
| PEAK6 LLC | Call | 244,400 | +98,400 +67.4% | $26.8M | Mar 31, 2026 | |
| Squarepoint Ops LLC | Call | 240,200 | -77,100 -24.3% | $26.3M | Mar 31, 2026 | |
| D. E. Shaw & Co., Inc. | Put | 233,100 | +65,400 +39.0% | $25.5M | Mar 31, 2026 | |
| Squarepoint Ops LLC | Put | 187,400 | -148,800 -44.3% | $20.5M | Mar 31, 2026 | |
| Point72 Asset Management, L.P. | Call | 170,000 | +51,000 +42.9% | $18.6M | Mar 31, 2026 | |
| Walleye Trading LLC | Call | 164,200 | -177,000 -51.9% | $18.0M | Mar 31, 2026 | |
| TWO SIGMA INVESTMENTS, LP | Put | 130,400 | +78,700 +152.2% | $14.3M | Mar 31, 2026 | |
| PEAK6 LLC | Put | 125,000 | -111,600 -47.2% | $13.7M | Mar 31, 2026 | |
| Walleye Trading LLC | Put | 112,800 | -88,700 -44.0% | $12.4M | Mar 31, 2026 | |
| TWO SIGMA INVESTMENTS, LP | Call | 108,900 | +75,400 +225.1% | $11.9M | Mar 31, 2026 | |
| GOLDMAN SACHS GROUP INC | Call | 100,000 | +100,000 new | $11.0M | Mar 31, 2026 | |
| BANK OF MONTREAL /CAN/ | Put | 94,700 | +94,700 new | $10.4M | Mar 31, 2026 | |
| D. E. Shaw & Co., Inc. | Call | 81,500 | -35,200 -30.2% | $8.9M | Mar 31, 2026 | |
| UBS Group AG | Call | 81,160 | +21,660 +36.4% | $8.9M | Mar 31, 2026 | |
| CAPITAL FUND MANAGEMENT S.A. | Call | 72,700 | -62,700 -46.3% | $8.0M | Mar 31, 2026 | |
| TUDOR INVESTMENT CORP ET AL | Put | 64,100 | +34,400 +115.8% | $7.0M | Mar 31, 2026 | |
| Twin Tree Management, LP | Put | 60,200 | -78,300 -56.5% | $6.6M | Mar 31, 2026 | |
| MILLENNIUM MANAGEMENT LLC | Call | 58,500 | +40,400 +223.2% | $6.4M | Mar 31, 2026 | |
| Point72 Asset Management, L.P. | Put | 53,400 | -95,000 -64.0% | $5.9M | Mar 31, 2026 | |
| CAPITAL FUND MANAGEMENT S.A. | Put | 51,600 | -78,100 -60.2% | $5.7M | Mar 31, 2026 | |
| MILLENNIUM MANAGEMENT LLC | Put | 41,800 | -191,700 -82.1% | $4.6M | Mar 31, 2026 | |
| Jain Global LLC | Put | 40,000 | +40,000 new | $4.4M | Mar 31, 2026 | |
| Jain Global LLC | Call | 38,500 | +38,500 new | $4.2M | Mar 31, 2026 | |
| Parallax Volatility Advisers, L.P. | Put | 34,100 | -10,600 -23.7% | $3.7M | Mar 31, 2026 | |
| CloudAlpha Capital Management Limited/Hong Kong | Call | 32,500 | +32,500 new | $3.6M | Mar 31, 2026 | |
| Walleye Capital LLC | Call | 32,000 | +8,800 +37.9% | $3.5M | Mar 31, 2026 | |
| Walleye Capital LLC | Put | 29,300 | -38,500 -56.8% | $3.2M | Mar 31, 2026 | |
| Alphadyne Asset Management LP | Call | 25,600 | +14,900 +139.3% | $2.8M | Mar 31, 2026 | |
| Volterra Technologies LP | Put | 24,300 | +22,400 +1178.9% | $2.7M | Mar 31, 2026 | |
| TUDOR INVESTMENT CORP ET AL | Call | 19,800 | -65,200 -76.7% | $2.2M | Mar 31, 2026 | |
| Parallax Volatility Advisers, L.P. | Call | 18,100 | -16,000 -46.9% | $2.0M | Mar 31, 2026 | |
| Volterra Technologies LP | Call | 10,200 | +10,200 new | $1.1M | Mar 31, 2026 | |
| Balyasny Asset Management L.P. | Call | 9,800 | +5,400 +122.7% | $1.1M | Mar 31, 2026 | |
| TORNO CAPITAL, LLC | Call | 9,000 | +0 +0.0% | $986.4K | Mar 31, 2026 | |
| BOOTHBAY FUND MANAGEMENT, LLC | Call | 6,800 | +6,800 new | $745.3K | Mar 31, 2026 | |
| LPL Financial LLC | Put | 5,000 | -100 -2.0% | $548.0K | Mar 31, 2026 | |
| BNP PARIBAS FINANCIAL MARKETS | Put | 5,000 | +4,880 +4066.7% | $54.8M | Mar 31, 2026 | |
| SIG BROKERAGE, LP | Call | 3,000 | +3,000 new | $328.8K | Mar 31, 2026 | |
| Balyasny Asset Management L.P. | Put | 2,700 | +100 +3.8% | $295.9K | Mar 31, 2026 | |
| Royal Fund Management, LLC | Call | 1,600 | +1,600 new | $40.9K | Mar 31, 2026 | |
| Twin Tree Management, LP | Call | 700 | -14,100 -95.3% | $76.7K | Mar 31, 2026 | |
| Man Group plc | Call | 500 | +500 new | $54.8K | Mar 31, 2026 | |
| Man Group plc | Put | 500 | +500 new | $54.8K | Mar 31, 2026 |
Page 1 of 2
Ownership Events — 13G / 13D
Event-driven, scanned dailyBlackRock, Inc. reports 6.2% (from 5.0%) Schedule 13G/A · amendment | 13G/A | Jan 21, 2026 |
Mohan Jitendra reports 5.4% Schedule 13G/A · amendment | 13G/A | Nov 14, 2025 |
Gajendra Sanjay falls below 5% Schedule 13G/A · position exited | 13G/A | Nov 14, 2025 |
BlackRock, Inc. crosses 5.0% Initial Schedule 13G · 8,352,673 shares reported | 13G | Oct 17, 2025 |
AllianceBernstein L.P. falls below 5% (from 5.2%) Schedule 13G/A · position exited | 13G/A | Aug 13, 2025 |
The Vanguard Group reports 7.3% (from 5.8%) Schedule 13G/A · amendment | 13G/A | Jul 29, 2025 |
AllianceBernstein L.P. crosses 5.0% Initial Schedule 13G · 8,401,019 shares reported | 13G | May 14, 2025 |
Atreides Management, LP falls below 5% (from 5.2%) Schedule 13G/A · position exited | 13G/A | Feb 14, 2025 |
The Vanguard Group crosses 5.0% Initial Schedule 13G · 9,211,630 shares reported | 13G | Jan 30, 2025 |
Sanjay Gajendra 2. crosses 5.0% Initial Schedule 13G · 8,705,545 shares reported | 13G | Nov 19, 2024 |
Quarterly holdings from SEC Form 13F-HR structured data sets (filed within 45 days of quarter end); 5%+ ownership events from Schedule 13G/13D filings scanned daily via EDGAR. Each row links to the source filing. Est. Avg Cost is a rolling-average estimate — each quarter's added shares priced at that quarter's 13F value ÷ shares, split-adjusted, with history beginning 2024-Q2; positions with one quarter of history or a data-quality flag show “—”.