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ALAB in the 13F filings

Astera Labs Inc · CUSIP 04626A103

Sector · SemiconductorsTheme · AI infrastructure and semiconductors· L3VLUP-definedTheme · Semiconductors
Quarter
Q3 2026 · early filersQ2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024
Quarter end
30 Jun 2025
the date the book describes
Filed
27 Aug 2025
latest of these filings; the earliest 6 Aug 2025
Managers listing it
23
at least, of 95 tracked, among listed positions
Comparable managers
95
filed both Q1 2025 and Q2 2025; 11 listed it in both
Shares listed
40,624,038
combined, among listed positions
Reported value
$3.7bn
combined, at the quarter end

Among the 95 comparable managers: 16 buyers (opened or added shares) and 7 sellers (trimmed or exited), at least, among listed positions. Their net change in shares is not known from listed positions, because at least one of them lists it in only one of the two quarters.

Managers listing ALAB in Q2 2025

Share of 13F value is the position’s reported value over everything the manager reported that quarter. The share change is against Q1 2025, and only where both filings list the position. A rise in value with no rise in shares is the price, not buying.

23 of 23 holders

ActionFiling
Fidelity (FMR LLC)24,804,046$2.2bn0.13%Added+681,30414 Aug 2025 (the filing on sec.gov)
AllianceBernstein LP6,391,580$578m0.19%Trimmed-2,009,43914 Aug 2025 (the filing on sec.gov)
D. E. Shaw & Co.2,030,397$184m0.13%Trimmed-1,345,84814 Aug 2025 (the filing on sec.gov)
Maverick Capital Ltd1,032,441$93m1.40%Held014 Aug 2025 (the filing on sec.gov)
MFS Investment Management1,028,315$93munder 0.1%Newnew8 Aug 2025 (the filing on sec.gov)
Two Sigma Investments LP799,286$72m0.13%Added+349,17214 Aug 2025 (the filing on sec.gov)
Renaissance Technologies LLC749,500$68m0.09%Trimmed-677,20013 Aug 2025 (the filing on sec.gov)
Holocene Advisors LP617,414$56m0.14%Newnew14 Aug 2025 (the filing on sec.gov)
Capital World Investors600,000$54munder 0.1%Held013 Aug 2025 (the filing on sec.gov)
Two Sigma Advisers LP577,600$52m0.11%Added+339,10014 Aug 2025 (the filing on sec.gov)
Squarepoint Ops LLC467,691$42munder 0.1%Addedn.a.27 Aug 2025 (the filing on sec.gov)
Artisan Partners LP300,494$27munder 0.1%Trimmed-2,98612 Aug 2025 (the filing on sec.gov)
Baillie Gifford & Co233,227$21munder 0.1%Newnew6 Aug 2025 (the filing on sec.gov)
Tudor Investment Corp222,348$20munder 0.1%Addedn.a.14 Aug 2025 (the filing on sec.gov)
Caxton Associates LLP163,753$15m0.38%Newnew15 Aug 2025 (the filing on sec.gov)
PDT Partners LLC124,642$11m0.64%Added+71,48514 Aug 2025 (the filing on sec.gov)
ExodusPoint Capital Management LP100,632$9.1m0.08%Newnew13 Aug 2025 (the filing on sec.gov)
Freestone Grove Partners LP84,296$7.6m0.06%Newnew14 Aug 2025 (the filing on sec.gov)
Bridgewater Associates LP80,237$7.3munder 0.1%Newnew13 Aug 2025 (the filing on sec.gov)
Brevan Howard Capital Management LP74,466$6.7munder 0.1%Newnew14 Aug 2025 (the filing on sec.gov)
Rokos Capital Management LLP73,107$6.6munder 0.1%Newnew14 Aug 2025 (the filing on sec.gov)
Discovery Capital Management LLC40,800$3.7m0.29%Trimmed-24,70014 Aug 2025 (the filing on sec.gov)
Winton Group Ltd27,766$2.5m0.13%Newnew14 Aug 2025 (the filing on sec.gov)

Largest increases and reductions, by shares

Q1 2025 to Q2 2025, among managers that listed it in both quarters or opened it.

Increases

Reductions

New positions and exits

At least these many: a manager is shown exiting only where its own filing shows the position gone.

New (10)

Exited (2)

Ownership over time

Every quarter on file. A quarter-end value moves with the price as well as with the shares held; buyers and sellers count comparable managers, by shares.
11 in Q3 2024 to 24 in Q2 2026

Tracked managers listing it, at least.

0102030Q1 2024Q2 2024Q3 2024Q4 2024Q1 2025Q2 2025Q3 2025Q4 2025Q1 2026Q2 2026
the quarter shown share split complete books; unmarked quarters rest on listed positionsClick a quarter to open it.
ALAB by quarter
QuarterHoldersReported valueBuyersSellers
Q1 202415$1.5bn150
Q2 20248$1.6bn28
Q3 202411$1.5bn83
Q4 202419$5.4bn128
Q1 202515$2.5bn105
Q2 202523$3.7bn167
Q3 202521$7.5bn1310
Q4 202519$6.1bn1327
Q1 202613$3.9bn1320
Q2 202624$18.9bn2219

Compare with…

Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.

ALAB and NVDA →ALAB and AVGO →ALAB and MU →Choose a stock to compare with ALAB →

How much of the picture this is

A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.

Which funds own ALAB, latest filings →Back to the 13F Explorer →