A10 Networks, Inc. (ATEN) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

73,046,000Shares Outstanding

69,929,503Shares held by institutions

$1,677,608,777Value of institutional holdings

95.73%Institutional ownership %

0.33%Shares Changed QoQ

238No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

A10 Networks, Inc. (NYSE:ATEN) has 238 institutional investors that have filed 13F reports for the period ending December 2025.

They owned 94.1% of outstanding stock in December 2025, down from 97.4% the prior quarter.
They increased total shares held in A10 Networks by 0.82% from the prior quarter, while the number of investors in ATEN increased 9.17% year over year.
Activity in ATEN broke down as 121 buyers, 90 sellers, and 27 unchanged among 238 total holders.
In total, institutional investors held 68.74Mn shares in A10 Networks as of December 2025, up by 556.08K shares quarter on quarter, and up 1.49Mn shares year over year.
BlackRock, Inc. leads ownership in ATEN with 12.99Mn shares as of December 31, 2025, equal to 17.78% of outstanding shares.
The largest buyers of A10 Networks for the quarter ending 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).
The largest sales of ATEN for the quarter ending December 2025 came from MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. (1.25Mn), Jpmorgan Chase & Co (543.32K), VICTORY CAPITAL MANAGEMENT INC (301.32K), TUDOR INVESTMENT CORP ET AL (268.4K), RENAISSANCE TECHNOLOGIES LLC (252.05K).
According to Business Quant data, leading holders of ATEN for December 2025 are 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).

238 Institutional Holders

69,929,503 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
Goldman Sachs Group Inc	31 Dec, 2025	2,068,982	1,448,800	233.61%	$36,600,290.00
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	-1,040,850	-36.11%	$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
Boston Partners	31 Dec, 2025	840,140	840,140	0.00%	$14,795,379.00
Invesco Ltd.	31 Dec, 2025	836,178	95,148	12.84%	$14,791,987.00
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

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