Oberweis Asset Management’s Alpha and Omega Semiconductor AOSL Stock Holding History

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2025 Q4	–	Sell	-271,100	Closed	-$7.58M	–	180
2025 Q3	$7.58M	Buy	271,100 +26,800	+11%	+$744K	0.29%	123
2025 Q2	$6.27M	Buy	244,300 +66,600	+37%	+$1.45M	0.27%	129
2025 Q1	$4.42M	Hold	177,700	–	–	0.22%	141
2024 Q4	$6.58M	Sell	177,700 -27,000	-13%	-$1.01M	0.31%	117
2024 Q3	$7.6M	Buy	204,700 +24,700	+14%	+$938K	0.39%	100
2024 Q2	$6.73M	Buy	+180,000	New	+$4.76M	0.41%	92
2022 Q4	–	Sell	-48,700	Closed	-$1.5M	–	166
2022 Q3	$1.5M	Sell	48,700 -13,300	-21%	-$492K	0.35%	64
2022 Q2	$2.07M	Sell	62,000 -12,000	-16%	-$491K	0.52%	35
2022 Q1	$4.04M	Hold	74,000	–	–	0.81%	20
2021 Q4	$4.48M	Hold	74,000	–	–	0.82%	20
2021 Q3	$2.32M	Buy	74,000 +29,000	+64%	+$804K	0.48%	30
2021 Q2	$1.37M	Buy	+45,000	New	+$1.38M	0.3%	59