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CSS LLC’s Applied Optoelectronics AAOI Stock Holding History

CSS LLC’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 		$493K Buy
3,328
+200
+6% +$32.5K 0.02% 557
2026
Q1 		$265K Buy
+3,128
New +$200K 0.01% 689
2025
Q1 		– Sell
-73,590
Closed -$1.85M – 910
2024
Q4 		$2.71M Buy
+73,590
New +$1.98M 0.12% 138

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

CSS LLC's AAOI Position: Q2 2026 in Review

CSS LLC increased its Applied Optoelectronics (AAOI) stake by 6.4% in Q2 2026, buying an estimated $32.5K and bringing the position to 3,328 shares worth $493K. The position accounts for 0.02% of the portfolio, ranked #557.

CSS LLC first reported a position in AAOI in Q4 2024 and has held it in 3 quarters since. The position peaked at $2.71M in Q4 2024. 481 funds tracked by Wall St. Rank hold AAOI as of Q2 2026.

  • CSS LLC held 3,328 shares of Applied Optoelectronics worth $493K as of Q2 2026.
  • CSS LLC bought 200 Applied Optoelectronics shares in Q2 2026, an estimated $32.5K.
  • Applied Optoelectronics made up 0.02% of CSS LLC's portfolio in Q2 2026, its #557 holding.
  • CSS LLC first reported a position in Applied Optoelectronics in Q4 2024 and has held it in 3 quarters since.
  • CSS LLC's Applied Optoelectronics position peaked at $2.71M in Q4 2024.
  • 481 funds tracked by Wall St. Rank held Applied Optoelectronics as of Q2 2026.

Based on CSS LLC's 13F filing for Q2 2026, filed 14 Aug 2026.