Company · Ownership research

A10 Networks, Inc. ATEN

CIK 0001580808 · CUSIP 002121101

Insider trading Initial holdings Institutional holders

Quarter-end disclosures, not live holdings.

Several CUSIPs are reported for this company; this page shows CUSIP 002121101 (ATEN), not CUSIP 002121901 (ATEN), CUSIP 002121951 (ATEN), and does not merge CUSIPs.

This page lists the top 20 of 113 rows by value; the complete set is available through the API.

Some filings reported values in thousands; those figures were scaled ×1,000 to dollars.

Top 20 institutions

Weight means this stock's share of the manager's own portfolio.

By reported value

#	Manager	Value	Manager weight	Change vs prior	Source
01	Boston Trust Walden Corp CIK 1534866 · View history	$81.84M 3,018,750 shares	0.66%	+601.94K(+24.90%)Added	SEC filing ↗ Oct 30, 2026	▾
02	GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history	$57.69M 2,127,782 shares	0.00%	+314.14K(+17.30%)Added	SEC filing ↗ Nov 6, 2026	▾
03	DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history	$44.18M 1,629,751 shares	0.01%	+30.62K(+1.90%)Added	SEC filing ↗ Nov 4, 2026	▾
04	Bank of New York Mellon Corp CIK 1390777 · View history	$17.53M 646,548 shares	0.00%	-13.34K(-2.00%)Reduced	SEC filing ↗ Nov 5, 2026	▾
05	WASATCH ADVISORS LP CIK 814133 · View history	$14.52M 535,558 shares	0.11%	+119.44K(+28.70%)Added	SEC filing ↗ Oct 13, 2026	▾
06	PRINCIPAL FINANCIAL GROUP INC CIK 1126328 · View history	$13.59M 501,171 shares	0.01%	+54.75K(+12.30%)Added	SEC filing ↗ Nov 2, 2026	▾
07	BARCLAYS PLC CIK 312069 · View history	$12.09M 446,090 shares	0.00%	-516.29K(-53.60%)Reduced	SEC filing ↗ Nov 6, 2026	▾
08	Bridge City Capital, LLC CIK 1713521 · View history	$9.08M 334,912 shares	1.89%	+38.67K(+13.10%)Added	SEC filing ↗ Oct 29, 2026	▾
09	SUMMIT PARTNERS L P CIK 830588 · View history	$5.42M 200,065 shares	1.10%	0(0.00%)Unchanged	SEC filing ↗ Oct 29, 2026	▾
10	Hennion & Walsh Asset Management, Inc. CIK 1861642 · View history	$4.91M 181,287 shares	0.14%	+39.31K(+27.70%)Added	SEC filing ↗ Oct 13, 2026	▾
11	DEUTSCHE BANK AG\ CIK 948046 · View history	$4.90M 180,847 shares	0.00%	+93.74K(+107.60%)Added	SEC filing ↗ Nov 6, 2026	▾
12	Robeco Institutional Asset Management B.V. CIK 1418773 · View history	$4.52M 166,833 shares	0.01%	+160.45K(+2,514.50%)Added	SEC filing ↗ Oct 20, 2026	▾
13	Creative Planning CIK 1540235 · View history	$4.16M 153,610 shares	0.00%	+3.99K(+2.70%)Added	SEC filing ↗ Nov 2, 2026	▾
14	HARBOR CAPITAL ADVISORS, INC. CIK 1039128 · View history	$4.07M 150,072 shares	0.28%	+2.40K(+1.60%)Added	SEC filing ↗ Oct 22, 2026	▾
15	TRUIST FINANCIAL CORP CIK 92230 · View history	$3.70M 136,406 shares	0.00%	-1.90K(-1.40%)Reduced	SEC filing ↗ Oct 30, 2026	▾
16	Russell Investments Group, Ltd. CIK 1692234 · View history	$3.47M 127,833 shares	0.00%	-7.16K(-5.30%)Reduced	SEC filing ↗ Nov 6, 2026	▾
17	CITIGROUP INC CIK 831001 · View history	$2.44M 89,935 shares	0.00%	-38.43K(-29.90%)Reduced	SEC filing ↗ Nov 4, 2026	▾
18	Verity Asset Management, Inc. CIK 1597298 · View history	$2.16M 79,624 shares	0.83%	+15.46K(+24.10%)Added	SEC filing ↗ Oct 30, 2026	▾
19	AEGON ASSET MANAGEMENT UK Plc CIK 1539994 · View history	$2.02M 74,609 shares	0.02%	0(0.00%)Unchanged	SEC filing ↗ Nov 4, 2026	▾
20	Vest Financial, LLC CIK 1709632 · View history	$1.92M 70,987 shares	0.02%	+4.32K(+6.50%)Added	SEC filing ↗ Oct 21, 2026	▾

Showing 20 / 113 institutions. The complete set is available through the API.

Coverage & totals by quarter

Reporting institutions

113

Cancelled or null records excluded

Disclosed shares

11,925,072

Not deduplicated across managers

Disclosed value

$324.65M

Not market cap or free float

Reporting institutions by quarter

Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.

A10 Networks, Inc. · Q3 2026

Explore all 113 reporting institutions.

This page includes 20 of 113 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.

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Sources, coverage & how to read this data

Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.