Harbor Capital Advisors’s A10 Networks ATEN Stock Holding History

Harbor Capital Advisors’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	$5.52M	Sell	147,669 -39,461	-21%	-$1.15M	0.38%	51
2026 Q1	$4.33M	Sell	187,130 -30,382	-14%	-$594K	0.35%	52
2025 Q4	$3.85M	Sell	217,512 -20,623	-9%	-$365K	0.3%	62
2025 Q3	$4.32M	Sell	238,135 -590,481	-71%	-$10.7M	0.34%	51
2025 Q2	$16M	Buy	828,616 +19,870	+2%	+$339K	0.67%	20
2025 Q1	$13.2M	Sell	808,746 -7,419	-0.9%	-$142K	0.6%	27
2024 Q4	$15M	Buy	816,165 +20,537	+3%	+$335K	0.66%	17
2024 Q3	$11.5M	Buy	795,628 +506,332	+175%	+$6.83M	0.5%	47
2024 Q2	$4.01M	Buy	289,296 +205,760	+246%	+$2.93M	0.31%	78
2024 Q1	$1.14M	Buy	83,536 +70,163	+525%	+$943K	0.15%	181
2023 Q4	$176K	Buy	13,373 +816	+6%	+$9.89K	0.03%	370
2023 Q3	$189K	Sell	12,557 -159	-1%	-$2.35K	0.04%	358
2023 Q2	$186K	Buy	+12,716	New	+$184K	0.04%	369

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

Harbor Capital Advisors's ATEN Position: Q2 2026 in Review

Harbor Capital Advisors reduced its A10 Networks (ATEN) stake by 21% in Q2 2026, selling an estimated $1.15M and leaving 147,669 shares worth $5.52M. The position accounts for 0.38% of the portfolio, ranked #51.

Harbor Capital Advisors first reported a position in ATEN in Q2 2023 and has held it in 13 quarters since. The position peaked at $16M in Q2 2025. 311 funds tracked by Wall St. Rank hold ATEN as of Q2 2026.

Harbor Capital Advisors held 147,669 shares of A10 Networks worth $5.52M as of Q2 2026.
Harbor Capital Advisors sold 39,461 A10 Networks shares in Q2 2026, an estimated $1.15M.
A10 Networks made up 0.38% of Harbor Capital Advisors's portfolio in Q2 2026, its #51 holding.
Harbor Capital Advisors first reported a position in A10 Networks in Q2 2023 and has held it in 13 quarters since.
Harbor Capital Advisors's A10 Networks position peaked at $16M in Q2 2025.
311 funds tracked by Wall St. Rank held A10 Networks as of Q2 2026.

Based on Harbor Capital Advisors's 13F filing for Q2 2026, filed 7 Aug 2026.