Oberweis Asset Management’s A10 Networks ATEN Stock Holding History

Oberweis Asset Management’s Portfolio ATEN Stock Details ATEN Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$20.6M	Buy	552,000 +47,700	+9%	+$1.39M	0.43%	85
2026 Q1	$11.7M	Buy	+504,300	New	+$9.86M	0.34%	105
2023 Q4	–	Sell	-215,000	Closed	-$3.23M	–	200
2023 Q3	$3.23M	Buy	215,000 +6,400	+3%	+$94.8K	0.34%	116
2023 Q2	$3.04M	Sell	208,600 -5,100	-2%	-$73.8K	0.37%	107
2023 Q1	$3.31M	Buy	213,700 +82,500	+63%	+$1.26M	0.51%	48
2022 Q4	$2.18M	Buy	131,200 +20,800	+19%	+$356K	0.46%	60
2022 Q3	$1.47M	Buy	110,400 +7,400	+7%	+$105K	0.34%	68
2022 Q2	$1.48M	Buy	+103,000	New	+$1.49M	0.37%	60
2021 Q1	–	Sell	-88,100	Closed	-$869K	–	168
2020 Q4	$869K	Buy	+88,100	New	+$692K	0.23%	66

Other funds holding ATEN

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

First Trust Advisors Wheaton, Illinois $170B AUM 46.21% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

PCM

Penserra Capital Management Orinda, California $13B AUM 71.84% 1-Year Est. Return

BTW

Boston Trust Walden Boston, Massachusetts $13.1B AUM 24.63% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return

Oberweis Asset Management's ATEN Position: Q2 2026 in Review

Oberweis Asset Management increased its A10 Networks (ATEN) stake by 9.5% in Q2 2026, buying an estimated $1.39M and bringing the position to 552,000 shares worth $20.6M. The position accounts for 0.43% of the portfolio, ranked #85.

Oberweis Asset Management first reported a position in ATEN in Q4 2020 and has held it in 9 quarters since. 311 funds tracked by Wall St. Rank hold ATEN as of Q2 2026.

Oberweis Asset Management held 552,000 shares of A10 Networks worth $20.6M as of Q2 2026.
Oberweis Asset Management bought 47,700 A10 Networks shares in Q2 2026, an estimated $1.39M.
A10 Networks made up 0.43% of Oberweis Asset Management's portfolio in Q2 2026, its #85 holding.
Oberweis Asset Management first reported a position in A10 Networks in Q4 2020 and has held it in 9 quarters since.
311 funds tracked by Wall St. Rank held A10 Networks as of Q2 2026.

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