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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
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 $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
OAM
Oberweis Asset Management Lisle, Illinois $3.39B AUM 105.5% 1-Year Est. Return
Jane Street
Jane Street New York $777B AUM 61.18% 1-Year Est. Return
D.E. Shaw & Co
D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

CSS LLC's AAOI Position: Q1 2026 in Review

CSS LLC opened a new position in Applied Optoelectronics (AAOI) in Q1 2026: 3,128 shares worth $265K. The stake represents 0.01% of the portfolio and ranks #689 among its holdings. This is a return to the name: CSS LLC previously reported a position in AAOI as recently as Q4 2024.

CSS LLC first reported a position in AAOI in Q4 2024 and has held it in 2 quarters since. The position peaked at $2.71M in Q4 2024. 375 funds tracked by Wall St. Rank hold AAOI as of Q1 2026.

  • CSS LLC held 3,128 shares of Applied Optoelectronics worth $265K as of Q1 2026.
  • Applied Optoelectronics was a new CSS LLC position in Q1 2026.
  • Applied Optoelectronics made up 0.01% of CSS LLC's portfolio in Q1 2026, its #689 holding.
  • CSS LLC first reported a position in Applied Optoelectronics in Q4 2024 and has held it in 2 quarters since.
  • CSS LLC's Applied Optoelectronics position peaked at $2.71M in Q4 2024.
  • 375 funds tracked by Wall St. Rank held Applied Optoelectronics as of Q1 2026.

Based on CSS LLC's 13F filing for Q1 2026, filed 15 May 2026.