Wellington Management Group’s A10 Networks ATEN Stock Holding History

Wellington Management Group’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	$73.2M	Sell	1,959,853 -114,658	-6%	-$3.33M	0.01%	631
2026 Q1	$48M	Buy	2,074,511 +54,444	+3%	+$1.06M	0.01%	745
2025 Q4	$35.7M	Sell	2,020,067 -34,146	-2%	-$605K	0.01%	831
2025 Q3	$37.3M	Buy	2,054,213 +588,922	+40%	+$10.7M	0.01%	818
2025 Q2	$28.4M	Buy	1,465,291 +335,172	+30%	+$5.73M	0.01%	856
2025 Q1	$18.5M	Buy	1,130,119 +899,919	+391%	+$17.3M	﹤0.01%	979
2024 Q4	$4.24M	Buy	+230,200	New	+$3.76M	﹤0.01%	1387
2023 Q1	–	Sell	-34,732	Closed	-$578K	–	1996
2022 Q4	$578K	Buy	34,732 +15,018	+76%	+$257K	﹤0.01%	1782
2022 Q3	$262K	Sell	19,714 -24,148	-55%	-$344K	﹤0.01%	1935
2022 Q2	$631K	Buy	+43,862	New	+$635K	﹤0.01%	1769
2017 Q2	–	Sell	-29,293	Closed	-$268K	–	2201
2017 Q1	$268K	Hold	29,293	–	–	﹤0.01%	2170
2016 Q4	$243K	Buy	29,293 +11,063	+61%	+$95.1K	﹤0.01%	2109
2016 Q3	$195K	Buy	+18,230	New	+$159K	﹤0.01%	2140

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

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

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

Wellington Management Group's ATEN Position: Q2 2026 in Review

Wellington Management Group reduced its A10 Networks (ATEN) stake by 5.5% in Q2 2026, selling an estimated $3.33M and leaving 1,959,853 shares worth $73.2M. The position accounts for 0.01% of the portfolio, ranked #631.

Wellington Management Group first reported a position in ATEN in Q3 2016 and has held it in 13 quarters since. 310 funds tracked by Wall St. Rank hold ATEN as of Q2 2026.

Wellington Management Group held 1,959,853 shares of A10 Networks worth $73.2M as of Q2 2026.
Wellington Management Group sold 114,658 A10 Networks shares in Q2 2026, an estimated $3.33M.
A10 Networks made up 0.01% of Wellington Management Group's portfolio in Q2 2026, its #631 holding.
Wellington Management Group first reported a position in A10 Networks in Q3 2016 and has held it in 13 quarters since.
310 funds tracked by Wall St. Rank held A10 Networks as of Q2 2026.

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