Robeco Institutional Asset Management’s A10 Networks ATEN Stock Holding History

Robeco Institutional 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	$238K	Buy	+6,381	New	+$185K	﹤0.01%	822
2025 Q4	–	Sell	-11,973	Closed	-$217K	–	828
2025 Q3	$217K	Hold	11,973	–	–	﹤0.01%	844
2025 Q2	$232K	Sell	11,973 -8,619	-42%	-$147K	﹤0.01%	846
2025 Q1	$336K	Buy	20,592 +6,893	+50%	+$132K	﹤0.01%	858
2024 Q4	$252K	Buy	13,699 +2,690	+24%	+$43.9K	﹤0.01%	875
2024 Q3	$159K	Hold	11,009	–	–	﹤0.01%	896
2024 Q2	$152K	Buy	+11,009	New	+$157K	﹤0.01%	905
2023 Q4	–	Sell	-10,419	Closed	-$157K	–	1100
2023 Q3	$157K	Hold	10,419	–	–	﹤0.01%	942
2023 Q2	$152K	Hold	10,419	–	–	﹤0.01%	958
2023 Q1	$161K	Hold	10,419	–	–	﹤0.01%	956
2022 Q4	$173K	Hold	10,419	–	–	﹤0.01%	926
2022 Q3	$138K	Buy	+10,419	New	+$148K	﹤0.01%	862
2022 Q2	–	Sell	-15,119	Closed	-$211K	–	927
2022 Q1	$211K	Sell	15,119 -2,946	-16%	-$41.4K	﹤0.01%	842
2021 Q4	$300K	Buy	+18,065	New	+$274K	﹤0.01%	809

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

Robeco Institutional Asset Management's ATEN Position: Q2 2026 in Review

Robeco Institutional Asset Management opened a new position in A10 Networks (ATEN) in Q2 2026: 6,381 shares worth $238K. The stake represents ﹤0.01% of the portfolio and ranks #822 among its holdings. This is a return to the name: Robeco Institutional Asset Management previously reported a position in ATEN as recently as Q3 2025.

Robeco Institutional Asset Management first reported a position in ATEN in Q4 2021 and has held it in 14 quarters since. The position peaked at $336K in Q1 2025. 310 funds tracked by Wall St. Rank hold ATEN as of Q2 2026.

Robeco Institutional Asset Management held 6,381 shares of A10 Networks worth $238K as of Q2 2026.
A10 Networks was a new Robeco Institutional Asset Management position in Q2 2026.
A10 Networks made up ﹤0.01% of Robeco Institutional Asset Management's portfolio in Q2 2026, its #822 holding.
Robeco Institutional Asset Management first reported a position in A10 Networks in Q4 2021 and has held it in 14 quarters since.
Robeco Institutional Asset Management's A10 Networks position peaked at $336K in Q1 2025.
310 funds tracked by Wall St. Rank held A10 Networks as of Q2 2026.

Based on Robeco Institutional Asset Management's 13F filing for Q2 2026, filed 21 Jul 2026.