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 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 $5.72T AUM 30.48% 1-Year Est. Return

PCM

Penserra Capital Management Orinda, California $8.52B AUM 37.76% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

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

BTW

Boston Trust Walden Boston, Massachusetts $12.2B AUM 12.45% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

Barclays London, United Kingdom $416B AUM 33.63% 1-Year Est. Return

Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return

First Trust Advisors Wheaton, Illinois $140B AUM 27.84% 1-Year Est. Return

Oberweis Asset Management's ATEN Position: Q1 2026 in Review

Oberweis Asset Management opened a new position in A10 Networks (ATEN) in Q1 2026: 504,300 shares worth $11.7M. The stake represents 0.34% of the portfolio and ranks #105 among its holdings. This is a return to the name: Oberweis Asset Management previously reported a position in ATEN as recently as Q3 2023.

Oberweis Asset Management first reported a position in ATEN in Q4 2020 and has held it in 8 quarters since. 264 funds tracked by Wall St. Rank hold ATEN as of Q1 2026.

Oberweis Asset Management held 504,300 shares of A10 Networks worth $11.7M as of Q1 2026.
A10 Networks was a new Oberweis Asset Management position in Q1 2026.
A10 Networks made up 0.34% of Oberweis Asset Management's portfolio in Q1 2026, its #105 holding.
Oberweis Asset Management first reported a position in A10 Networks in Q4 2020 and has held it in 8 quarters since.
264 funds tracked by Wall St. Rank held A10 Networks as of Q1 2026.

Based on Oberweis Asset Management's 13F filing for Q1 2026, filed 15 May 2026.