ASTERA LABS INC (ALAB) Top Institutional Shareholders
ASTERA LABS INC (ALAB) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $12.98B in ALAB holdings during the latest filing period.
Fmr Llc is currently the largest disclosed institutional shareholder of ALAB tracked by InsiderSet, reporting ownership valued at approximately $2.80B in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $10.54B, representing an estimated gain of +276.80% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 57% of the total disclosed ALAB value among the investors covered in this analysis. Major shareholders include Fmr Llc, Blackrock, Inc., Vanguard Portfolio Management Llc, and several other long-term asset managers with concentrated positions in ASTERA LABS INC (ALAB).
This page ranks the largest institutional ALAB shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
698
Total Reported Value
$12.98B
Largest Holder
Fmr Llc
Largest Position
$2.80B
Insider Transactions (90d)
50
Latest Filing Quarter
Q2 2026
New Institutional Positions
90
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Fmr Llc | 0.15% | 25,529,885 | $2,798,075,366 | $10,543,076,608 | +$7,745,001,242 | +276.80% | |
| Blackrock, Inc. | 0.02% | 11,449,769 | $1,254,894,655 | $4,728,411,104 | +$3,473,516,449 | +276.80% | |
| Vanguard Portfolio Management Llc | 0.04% | 7,309,778 | $801,151,669 | $3,018,719,021 | +$2,217,567,352 | +276.80% | |
| Vanguard Capital Management Llc | 0.02% | 6,340,732 | $694,944,227 | $2,618,532,094 | +$1,923,587,867 | +276.80% | |
| Alliancebernstein L.P. | 0.14% | 2,512,695 | $418,011,940 | $1,037,667,654 | +$619,655,714 | +148.24% | |
| Atreides Management, Lp | 8.99% | 3,365,787 | $368,890,255 | $1,389,969,057 | +$1,021,078,802 | +276.80% | |
| State Street Corp | 0.01% | 3,333,606 | $365,363,218 | $1,376,679,270 | +$1,011,316,052 | +276.80% | |
| Fred Alger Management, Llc | 1.24% | 2,573,005 | $282,001,348 | $1,062,573,875 | +$780,572,527 | +276.80% | |
| Geode Capital Management, Llc | 0.02% | 2,508,264 | $274,170,956 | $1,035,837,784 | +$761,666,828 | +277.81% | |
| Amundi | 0.06% | 1,880,830 | $206,138,969 | $776,726,365 | +$570,587,396 | +276.80% | |
| Bnp Paribas Financial Markets | 0.13% | 1,813,818 | $198,794,453 | $749,052,419 | +$550,257,966 | +276.80% | |
| Bank Of America Corp | 0.01% | 1,788,232 | $195,990,227 | $738,486,169 | +$542,495,942 | +276.80% | |
| Morgan Stanley | 0.01% | 1,732,348 | $189,865,686 | $715,407,754 | +$525,542,068 | +276.80% | |
| Barclays Plc | 0.06% | 1,554,180 | $170,338,128 | $641,829,715 | +$471,491,587 | +276.80% | |
| D. E. Shaw & Co., Inc. | 0.13% | 1,519,561 | $166,543,886 | $627,533,106 | +$460,989,220 | +276.80% | |
| Citigroup Inc | 0.11% | 1,513,054 | $165,830,719 | $624,845,910 | +$459,015,191 | +276.80% | |
| Ubs Group Ag | 0.03% | 1,442,578 | $158,106,548 | $595,741,437 | +$437,634,889 | +276.80% | |
| Goldman Sachs Group Inc | 0.02% | 1,380,114 | $151,260,549 | $569,945,679 | +$418,685,130 | +276.80% | |
| Maverick Capital Ltd | 1.22% | 955,356 | $104,707,018 | $394,533,367 | +$289,826,349 | +276.80% | |
| Rafferty Asset Management, Llc | 0.42% | 945,506 | $103,627,458 | $390,465,613 | +$286,838,155 | +276.80% | |
| Westfield Capital Management Co Lp | 0.40% | 860,113 | $94,268,376 | $355,200,866 | +$260,932,490 | +276.80% | |
| Vanguard Fiduciary Trust Co | 0.02% | 851,761 | $93,353,006 | $351,751,740 | +$258,398,734 | +276.80% | |
| 1832 Asset Management L.P. | 0.12% | 850,700 | $93,236,720 | $351,313,579 | +$258,076,859 | +276.80% | |
| Fuller & Thaler Asset Management, Inc. | 0.31% | 834,660 | $91,478,689 | $344,689,540 | +$253,210,851 | +276.80% | |
| Northern Trust Corp | 0.01% | 804,661 | $88,190,846 | $332,300,853 | +$244,110,007 | +276.80% | |
| Bridgewater Associates, Lp | 0.37% | 750,940 | $82,303,024 | $310,115,692 | +$227,812,668 | +276.80% | |
| Two Sigma Investments, Lp | 0.07% | 744,309 | $81,576,266 | $307,377,288 | +$225,801,022 | +276.80% | |
| Deutsche Bank Ag\ | 0.03% | 730,905 | $80,107,188 | $301,841,838 | +$221,734,650 | +276.80% | |
| Legal & General Group Plc | 0.02% | 720,256 | $78,940,057 | $297,444,120 | +$218,504,063 | +276.80% | |
| Frontier Capital Management Co Llc | 0.78% | 688,213 | $75,428,174 | $284,211,323 | +$208,783,149 | +276.80% | |
| Charles Schwab Investment Management Inc | 0.01% | 661,505 | $72,500,948 | $273,181,720 | +$200,680,772 | +276.80% | |
| Ubs Am, A Distinct Business Unit Of Ubs Asset Management Americas Llc | 0.01% | 649,191 | $71,151,333 | $268,096,407 | +$196,945,074 | +276.80% | |
| Susquehanna International Group, Llp | 0.09% | 610,669 | $66,929,323 | $252,187,977 | +$185,258,654 | +276.80% | |
| Canada Pension Plan Investment Board | 0.04% | 600,500 | $65,814,800 | $247,988,485 | +$182,173,685 | +276.80% | |
| Capital World Investors | 0.01% | 600,000 | $65,760,000 | $247,782,000 | +$182,022,000 | +276.80% | |
| Value Aligned Research Advisors, Llc | 0.74% | 568,316 | $62,287,434 | $234,697,459 | +$172,410,025 | +276.80% | |
| Artisan Partners Limited Partnership | 0.10% | 560,579 | $61,439,407 | $231,502,310 | +$170,062,903 | +276.80% | |
| Manufacturers Life Insurance Company, The | 0.05% | 538,205 | $58,987,268 | $222,262,519 | +$163,275,251 | +276.80% | |
| Analog Century Management Lp | 2.64% | 504,301 | $55,271,390 | $208,261,184 | +$152,989,794 | +276.80% | |
| Clear Street Group Inc. | 0.31% | 499,772 | $54,775,011 | $206,390,843 | +$151,615,832 | +276.80% | |
| Bank Of New York Mellon Corp | 0.01% | 475,505 | $52,115,362 | $196,369,300 | +$144,253,938 | +276.80% | |
| Adage Capital Partners Gp, L.L.C. | 0.08% | 453,741 | $49,730,014 | $187,381,421 | +$137,651,407 | +276.80% | |
| Nomura Asset Management Co Ltd | 0.13% | 450,628 | $49,388,829 | $186,095,845 | +$136,707,016 | +276.80% | |
| Janus Henderson Group Plc | 0.02% | 433,165 | $47,414,332 | $178,884,150 | +$131,469,818 | +277.28% | |
| Tidal Investments Llc | 0.14% | 407,732 | $44,687,427 | $168,381,084 | +$123,693,657 | +276.80% | |
| Swiss National Bank | 0.02% | 390,164 | $42,761,974 | $161,126,027 | +$118,364,053 | +276.80% | |
| Invesco Ltd. | 0.01% | 370,180 | $40,571,728 | $152,873,235 | +$112,301,507 | +276.80% | |
| Altshuler Shaham Ltd | 0.72% | 366,250 | $39,408,400 | $151,250,263 | +$111,841,863 | +283.80% | |
| Greenhouse Funds Lllp | 1.85% | 355,272 | $38,937,811 | $146,716,678 | +$107,778,867 | +276.80% | |
| Strategy Capital Llc | 3.16% | 352,268 | $38,608,573 | $145,476,116 | +$106,867,543 | +276.80% |
Frequently asked questions about ALAB
Who owns the most ALAB stock?
The largest holders of ALAB are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for ASTERA LABS INC (ALAB).
Is ALAB widely held by superinvestors?
Many widely followed stocks like ALAB appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly ALAB is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.