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Castleark Management’s Astera Labs ALAB Stock Holding History

Castleark Management’s Portfolio ALAB Stock Details ALAB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-26,221
Closed -$5.13M – 346
2025
Q3 		$5.13M Sell
26,221
-35,309
-57% -$5.81M 0.14% 145
2025
Q2 		$5.56M Buy
+61,530
New +$4.86M 0.17% 116
2025
Q1 		– Sell
-2,750
Closed -$364K – 352
2024
Q4 		$364K Buy
+2,750
New +$258K 0.01% 242

Other funds holding ALAB

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
AllianceBernstein
AllianceBernstein Nashville, Tennessee $309B AUM 23.92% 1-Year Est. Return
FAM
Fred Alger Management New York $22.8B AUM 64.63% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
AM
Atreides Management Boston, Massachusetts $5B AUM 78.34% 1-Year Est. Return

Castleark Management's ALAB Position: Q4 2025 in Review

Castleark Management sold out of Astera Labs (ALAB) in Q4 2025, closing a stake of 26,221 shares — an estimated $5.13M sold.

Castleark Management first reported a position in ALAB in Q4 2024 and held it in 3 quarters. The position peaked at $5.56M in Q2 2025. 700 funds tracked by Wall St. Rank hold ALAB as of Q4 2025.

  • Castleark Management reported no remaining Astera Labs position as of Q4 2025 after selling out during the quarter.
  • Castleark Management sold 26,221 Astera Labs shares in Q4 2025, an estimated $5.13M.
  • Castleark Management first reported a position in Astera Labs in Q4 2024 and held it in 3 quarters.
  • Castleark Management's Astera Labs position peaked at $5.56M in Q2 2025.
  • 700 funds tracked by Wall St. Rank held Astera Labs as of Q4 2025.

Based on Castleark Management's 13F filing for Q4 2025, filed 13 Feb 2026.