GAMCO Investors’s Applied Optoelectronics AAOI Stock Holding History

GAMCO Investors’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	–	Sell	-9,200	Closed	-$321K	–	1009
2025 Q4	$321K	Sell	9,200 -19,800	-68%	-$591K	﹤0.01%	908
2025 Q3	$752K	Sell	29,000 -12,500	-30%	-$320K	0.01%	708
2025 Q2	$1.07M	Sell	41,500 -6,000	-13%	-$97.1K	0.01%	646
2025 Q1	$729K	Sell	47,500 -15,500	-25%	-$390K	0.01%	611
2024 Q4	$2.32M	Sell	63,000 -4,800	-7%	-$129K	0.02%	480
2024 Q3	$970K	Sell	67,800 -25,000	-27%	-$259K	0.01%	593
2024 Q2	$769K	Sell	92,800 -4,600	-5%	-$50.6K	0.01%	631
2024 Q1	$1.35M	Sell	97,400 -16,500	-14%	-$278K	0.01%	547
2023 Q4	$2.2M	Sell	113,900 -28,600	-20%	-$374K	0.02%	481
2023 Q3	$1.56M	Sell	142,500 -40,500	-22%	-$430K	0.02%	510
2023 Q2	$1.09M	Buy	183,000 +149,000	+438%	+$391K	0.01%	564
2023 Q1	$75.1K	Buy	+34,000	New	+$83.3K	﹤0.01%	870
2022 Q4	–	Sell	-55,035	Closed	-$150K	–	883
2022 Q3	$150K	Buy	+55,035	New	+$124K	﹤0.01%	850

Other funds holding AAOI

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 New York $777B AUM 61.18% 1-Year Est. Return

D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return

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 Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

GAMCO Investors's AAOI Position: Q1 2026 in Review

GAMCO Investors sold out of Applied Optoelectronics (AAOI) in Q1 2026, closing a stake of 9,200 shares — an estimated $321K sold.

GAMCO Investors first reported a position in AAOI in Q3 2022 and held it in 13 quarters. The position peaked at $2.32M in Q4 2024. 375 funds tracked by Wall St. Rank hold AAOI as of Q1 2026.

GAMCO Investors reported no remaining Applied Optoelectronics position as of Q1 2026 after selling out during the quarter.
GAMCO Investors sold 9,200 Applied Optoelectronics shares in Q1 2026, an estimated $321K.
GAMCO Investors first reported a position in Applied Optoelectronics in Q3 2022 and held it in 13 quarters.
GAMCO Investors's Applied Optoelectronics position peaked at $2.32M in Q4 2024.
375 funds tracked by Wall St. Rank held Applied Optoelectronics as of Q1 2026.

Based on GAMCO Investors's 13F filing for Q1 2026, filed 14 May 2026.