A10 Networks, Inc. (ATEN) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

71,711,765Shares Outstanding

1,217,514Shares held by institutions

$24,423,331Value of institutional holdings

94.06%Institutional ownership %

2.00%Shares Changed QoQ

231No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

The institutional landscape for A10 Networks, Inc. (NYSE:ATEN) includes 231 filers as of the latest reporting cycle ending December 2025.

Institutional ownership in A10 Networks edged down to 94.1% in December 2025, compared to 97.9% in September 2025.
On a quarter-over-quarter basis, institutional holdings shifted by 2.00%, with a year-over-year an increase of 6.45% in the count of filers.
Of these 231 institutional investors, 118 increased their holdings in A10 Networks, while 85 of them reduced positions, and 28 investors maintained their exposure.
Collectively, institutional investors increased their stake in A10 Networks to 67.46Mn shares as of December 2025, a change that is up by 1.32Mn shares quarter on quarter and up 2.59Mn shares year over year.
The top institutional stake in A10 Networks as of December 31, 2025 belongs to BlackRock, Inc., which owns 12.99Mn shares, or 18.11% of the company.
Among the most significant buyers of A10 Networks during December 2025 were Boston Partners (840.14K), Penserra Capital Management LLC (601.81K), Defiance ETFs, LLC (560.33K), BARCLAYS PLC (476.65K), FIRST TRUST ADVISORS LP (429.07K).
Leading sellers of A10 Networks stock in December 2025 included MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. (1.25Mn), VICTORY CAPITAL MANAGEMENT INC (301.32K), RENAISSANCE TECHNOLOGIES LLC (252.05K), Boston Trust Walden Corp (199.34K), CITADEL ADVISORS LLC (198.78K).
The top 10 institutional holders of A10 Networks for the quarter ending December 2025 included BlackRock, Inc. (12.99Mn), VANGUARD GROUP INC (7.24Mn), Penserra Capital Management LLC (4.26Mn), STATE STREET CORP (3.12Mn), FIRST TRUST ADVISORS LP (2.46Mn), Boston Trust Walden Corp (2.44Mn), RENAISSANCE TECHNOLOGIES LLC (2.13Mn), WELLINGTON MANAGEMENT GROUP LLP (2.02Mn), BARCLAYS PLC (1.84Mn), GEODE CAPITAL MANAGEMENT, LLC (1.78Mn).

231 Institutional Holders

1,217,514 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	12,985,049	-73,058	-0.56%	$229,705,512.00
VANGUARD GROUP INC	31 Dec, 2025	7,241,762	6,692	0.09%	$128,106,771.00
Penserra Capital Management LLC	31 Dec, 2025	4,260,259	601,806	16.45%	$75,363.00
STATE STREET CORP	31 Dec, 2025	3,116,155	-172,032	-5.23%	$55,124,782.00
FIRST TRUST ADVISORS LP	31 Dec, 2025	2,463,337	429,066	21.09%	$43,576,431.00
Boston Trust Walden Corp	31 Dec, 2025	2,440,649	-199,343	-7.55%	$43,175,081.00
RENAISSANCE TECHNOLOGIES LLC	31 Dec, 2025	2,134,734	-252,053	-10.56%	$37,763,444.00
WELLINGTON MANAGEMENT GROUP LLP	31 Dec, 2025	2,020,067	-34,146	-1.66%	$35,734,985.00
BARCLAYS PLC	31 Dec, 2025	1,841,906	476,647	34.91%	$32,583,318.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	1,777,631	10,052	0.57%	$31,451,945.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	1,648,788	15,198	0.93%	$29,168,131.00
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	31 Dec, 2025	1,448,929	-1,250,700	-46.33%	$25,634,840.00
PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC.	31 Dec, 2025	1,435,626	4,268	0.30%	$25,396,224.00
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	31 Dec, 2025	1,095,287	-131,060	-10.69%	$19,375,627.00
GOLDMAN SACHS GROUP INC	31 Dec, 2025	1,034,491	414,309	66.80%	$18,300,145.00
Boston Partners	31 Dec, 2025	840,140	840,140	0.00%	$14,795,379.00
MORGAN STANLEY	31 Dec, 2025	804,350	48,874	6.47%	$14,228,989.00
TWO SIGMA INVESTMENTS, LP	31 Dec, 2025	733,734	50,488	7.39%	$12,979,754.00
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	31 Dec, 2025	728,568	19,356	2.73%	$12,888,370.00
ROYCE & ASSOCIATES LP	31 Dec, 2025	727,410	32,582	4.69%	$12,867,883.00

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