A10 Networks ATEN Institutional Ownership

NYSE ATEN

$27.75 +0.15 (+0.53%)

As of: Oct 2, 2026 · 12:45 PM EDT

Institutions by Trading Activity

313 Institutions

Increased 171 54.6%

Unchanged 42 13.4%

Reduced 100 31.9%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

107.04%

▼-0.83 pp QoQ

Shares Held by Institutions

77.24Mn

of 72.16Mn outstanding

▲+10.33% QoQ

Shares Outstanding

72.16Mn

-5.08Mn held outside 13F filers

Institutional Investors

313

filed 13F for Jun 2026

▲+48 vs prior quarter

Net Shares Added (QoQ)

+7.23Mn

accumulated since last quarter

Value of Holdings

$2.09Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

A10 Networks, Inc. (NYSE:ATEN) is held by 312 institutional investors per 13F filings through June 2026.

These investors collectively held 107.0% of A10 Networks's outstanding shares in June 2026, down from 107.9% in March 2026.
They increased total shares held in A10 Networks by 10.33% from the prior quarter, while the number of investors in ATEN increased 35.06% year over year.
During the quarter, 170 of these 312 funds increased positions in ATEN, 100 reduced exposure, and 42 held steady.
Altogether, these fund groups held 77.22Mn shares in ATEN by June 2026, up by 7.23Mn shares quarter on quarter, and up 8.14Mn shares year over year.
As of June 30, 2026, BlackRock, Inc. held the largest stake in A10 Networks with 13.57Mn shares, accounting for 18.8% of total shares outstanding.
Top purchasers of ATEN stock for the quarter ending June 2026 included FIRST TRUST ADVISORS LP (1.52Mn), FMR LLC (1.41Mn), NOMURA ASSET MANAGEMENT INTERNATIONAL INC. (896.52K), LOOMIS SAYLES & CO L P (884.02K), Invesco Ltd. (880.38K).
The biggest sellers of A10 Networks for the quarter ending June 2026 included Barclays Plc (912.12K), Penserra Capital Management LLC (526.07K), JANE STREET GROUP, LLC (502.07K), CITADEL ADVISORS LLC (420.78K), PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC. (271.16K).
Per Business Quant, the top 10 investors in ATEN for the quarter ending June 2026 include BlackRock, Inc. (13.57Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (3.46Mn), FIRST TRUST ADVISORS LP (3.24Mn), State Street Corp (3.08Mn), VANGUARD CAPITAL MANAGEMENT LLC (3.07Mn), Penserra Capital Management LLC (3.07Mn), Boston Trust Walden Corp (2.42Mn), WELLINGTON MANAGEMENT GROUP LLP (1.96Mn), GEODE CAPITAL MANAGEMENT, LLC (1.81Mn), Goldman Sachs Group Inc (1.78Mn).

Form 13F Holdings

313 Institutional Holders

Report period 30 Jun, 2026

Total shares held 77.24Mn

Of outstanding 107.04%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	13,568,496	18.80%	▲480,219	+3.67%	$506.92Mn
2	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	3,462,058	4.80%	▲74,210	+2.19%	$129.34Mn
3	FIRST TRUST ADVISORS LP	0001125816	3,244,739	4.50%	▲1,524,922	+88.67%	$121.22Mn
4	State Street Corp	0000093751	3,082,631	4.27%	▼7,554	-0.24%	$115.17Mn
5	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	3,071,071	4.26%	▼49,944	-1.60%	$114.74Mn
6	Penserra Capital Management LLC	0001593324	3,068,045	4.25%	▼526,067	-14.64%	$114.62K
7	Boston Trust Walden Corp	0001534866	2,416,808	3.35%	▲243,547	+11.21%	$90.29Mn
8	WELLINGTON MANAGEMENT GROUP LLP	0000902219	1,959,853	2.72%	▼114,658	-5.53%	$73.22Mn
9	GEODE CAPITAL MANAGEMENT, LLC	0001214717	1,813,638	2.51%	▲96,232	+5.60%	$67.77Mn
10	Goldman Sachs Group Inc	0000886982	1,784,946	2.47%	▲598,203	+50.41%	$66.69Mn
11	DIMENSIONAL FUND ADVISORS LP	0000354204	1,599,129	2.22%	▼36,818	-2.25%	$59.74Mn
12	RENAISSANCE TECHNOLOGIES LLC	0001037389	1,520,287	2.11%	▼264,700	-14.83%	$56.80Mn
13	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	0001164508	1,437,650	1.99%	▼59,494	-3.97%	$53.71Mn
14	FMR LLC	0000315066	1,433,878	1.99%	▲1,405,772	+5,001.68%	$53.57Mn
15	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	0001705339	1,426,608	1.98%	▼129,568	-8.33%	$53.27Mn
16	Invesco Ltd.	0000914208	1,243,053	1.72%	▲880,381	+242.75%	$46.44Mn
17	PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC.	0001238990	1,188,747	1.65%	▼271,163	-18.57%	$44.41Mn
18	TWO SIGMA INVESTMENTS, LP	0001179392	1,124,963	1.56%	▼195,026	-14.77%	$42.03Mn
19	Prudential Financial Inc	0001137774	1,048,320	1.45%	▲163,113	+18.43%	$39.17Mn
20	Barclays Plc	0000312069	962,382	1.33%	▼912,120	-48.66%	$35.95Mn

Showing 1 to 20 of 313 holders