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Castleark Management’s Applied Optoelectronics AAOI Stock Holding History

Castleark Management’s Portfolio AAOI Stock Details AAOI Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		– Sell
-25,700
Closed -$2.17M – 310
2026
Q1 		$2.17M Buy
+25,700
New +$1.64M 0.07% 199
2025
Q4 		– Sell
-125,379
Closed -$3.25M – 295
2025
Q3 		$3.25M Buy
+125,379
New +$3.21M 0.09% 174

Other funds holding AAOI

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
MG
Marex Group London $23.6B AUM 57.16% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
UBS Group
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
OAM
Oberweis Asset Management Lisle, Illinois $4.84B AUM 160.95% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
VARA
Value Aligned Research Advisors Princeton, New Jersey $40.1B AUM 376.19% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return

Castleark Management's AAOI Position: Q2 2026 in Review

Castleark Management sold out of Applied Optoelectronics (AAOI) in Q2 2026, closing a stake of 25,700 shares — an estimated $2.17M sold.

Castleark Management first reported a position in AAOI in Q3 2025 and held it in 2 quarters. The position peaked at $3.25M in Q3 2025. 481 funds tracked by Wall St. Rank hold AAOI as of Q2 2026.

  • Castleark Management reported no remaining Applied Optoelectronics position as of Q2 2026 after selling out during the quarter.
  • Castleark Management sold 25,700 Applied Optoelectronics shares in Q2 2026, an estimated $2.17M.
  • Castleark Management first reported a position in Applied Optoelectronics in Q3 2025 and held it in 2 quarters.
  • Castleark Management's Applied Optoelectronics position peaked at $3.25M in Q3 2025.
  • 481 funds tracked by Wall St. Rank held Applied Optoelectronics as of Q2 2026.

Based on Castleark Management's 13F filing for Q2 2026, filed 14 Aug 2026.