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Astera Labs
ALAB

657 hedge funds and large institutions have $21.7B invested in Astera Labs in 2025 Q3 according to their latest regulatory filings, with 220 funds opening new positions, 188 increasing their positions, 208 reducing their positions, and 71 closing their positions.

New
Increased
Maintained
Reduced
Closed

210% more first-time investments, than exits

New positions opened: 220 | Existing positions closed: 71

150% more funds holding in top 10

Funds holding in top 10: 6 → 15 (+9)

134% more capital invested

Capital invested by funds: $9.29B → $21.7B (+$12.4B)

28% more funds holding

Funds holding: 513 → 657 (+144)

4.35% more ownership

Funds ownership: 62.3% → 66.65% (+4.3%)

10% less repeat investments, than reductions

Existing positions increased: 188 | Existing positions reduced: 208

16% less call options, than puts

Call options by funds: $1.95B | Put options by funds: $2.34B

Holders
657
Holders Change
+144
Holders Change %
+28.07%
% of All Funds
8.62%
Holding in Top 10
15
Holding in Top 10 Change
+9
Holding in Top 10 Change %
+150%
% of All Funds
0.2%
New
220
Increased
188
Reduced
208
Closed
71
Calls
$1.95B
Puts
$2.34B
Net Calls
-$383M
Net Calls Change
-$425M

Top Buyers

1
BlackRock
BlackRock
New York
+$675M
2
Barclays
Barclays
United Kingdom
+$323M
3
Vanguard Group
Vanguard Group
Pennsylvania
+$279M
4
Amundi
Amundi
France
+$217M
5
Bank of America
Bank of America
North Carolina
+$194M

Top Sellers

1
AllianceBernstein
AllianceBernstein
Tennessee
-$571M
2
Ameriprise
Ameriprise
Minnesota
-$152M
3
AM
Atreides Management
Massachusetts
-$147M
4
FFM
FengHe Fund Management
Singapore
-$141M
5
Fidelity Investments
Fidelity Investments
Massachusetts
-$119M
Name Holding Trade Value Shares
Change 		Change in
Stake
Robeco Institutional Asset Management
676
Robeco Institutional Asset Management
Netherlands
– -$3M -33,132 Closed
OF
677
Optimize Financial
California
– -$2.58M -28,581 Closed
WG
678
Winton Group
United Kingdom
– -$2.51M -27,766 Closed
MG
679
Marex Group
– -$2.2M -24,300 Closed
FIG
680
Fortress Investment Group
New York
– -$2.03M -22,500 Closed
PCP
681
Proficio Capital Partners
Massachusetts
– -$1.83M -20,188 Closed
RFM
682
Royal Fund Management
Florida
– -$1.61M -17,758 Closed
NERM
683
New England Research & Management
Illinois
– -$1.25M -13,825 Closed
SSIM
684
Sheets Smith Investment Management
Texas
– -$1.15M -12,696 Closed
PP
685
Paloma Partners
Connecticut
– -$1.08M -11,999 Closed
LCM
686
Landscape Capital Management
New Jersey
– -$936K -10,355 Closed
IP
687
Interval Partners
New York
– -$904K -10,000 Closed
Balyasny Asset Management
688
Balyasny Asset Management
Illinois
– -$1.61M -9,763 Closed
MYIA
689
Mount Yale Investment Advisors
Colorado
– -$862K -9,532 Closed
PMAM
690
Picton Mahoney Asset Management
Ontario, Canada
– -$809K -8,950 Closed
MP
691
Mangrove Partners
Connecticut
– -$712K -7,875 Closed
RAM
692
Revere Asset Management
Texas
– -$683K -7,550 Closed
EAM
693
Eventide Asset Management
Massachusetts
– -$626K -6,923 Closed
Jacobs Levy Equity Management
694
Jacobs Levy Equity Management
New Jersey
– -$605K -6,690 Closed
BCM
695
Bayesian Capital Management
New York
– -$571K -6,312 Closed
CCS
696
Concentric Capital Strategies
Connecticut
– -$529K -5,850 Closed
DFCM
697
Dark Forest Capital Management
Puerto Rico
– -$528K -5,835 Closed
SG
698
StoneX Group
New York
– -$496K -5,480 Closed
SSWM
699
Sheets Smith Wealth Management
North Carolina
– -$481K -5,316 Closed
GCA
700
Greenwood Capital Associates
South Carolina
– -$437K -4,834 Closed
26 27
28
29 30

ALAB Hedge Fund Activity: Q3 2025 in Review

657 of the 7,619 institutional investors tracked by Wall St. Rank reported a position in Astera Labs (ALAB) for Q3 2025, worth a combined $21.7B — up 134% from $9.29B a quarter earlier.

Buyers outnumbered sellers: 220 funds opened new ALAB positions and 71 closed out — a net gain of 149 holders — while 188 added to existing stakes and 208 trimmed.

The largest buyer was BlackRock, adding an estimated $675M. The largest seller was AllianceBernstein, cutting an estimated $571M.

  • 657 institutional investors held Astera Labs (ALAB) as of Q3 2025, up from 513 in Q2 2025.
  • Funds reported $21.7B of Astera Labs stock for Q3 2025, up 134% quarter-over-quarter.
  • 220 funds opened new Astera Labs positions in Q3 2025 and 71 closed out, a net change of +149 holders.
  • The largest Astera Labs buyer in Q3 2025 was BlackRock, an estimated $675M added.
  • The largest Astera Labs seller in Q3 2025 was AllianceBernstein, an estimated $571M sold.

Based on aggregated 13F filings for Q3 2025.