What does CUSIP 002121101 represent in this 13F holders report?

CUSIP 002121101 is the security identifier for ATEN - A10 Networks, Inc. - Common Stock used to aggregate holder disclosures.

How many institutions held ATEN - A10 Networks, Inc. - Common Stock in Q2 2023?

195 institutional investors reported ATEN - A10 Networks, Inc. - Common Stock for Q2 2023. Use the holders table for investor-level position and value details.

A10 Networks, Inc. - Common Stock (ATEN)

CUSIP: 002121101

Q2 2023 13F Holders as of 30 Jun 2023

Type / Class: Equity / Common Stock
Shares outstanding: 77,603,290
Total 13F shares: 65,353,425
Share change: +2,306,702
Total reported value: $953,578,596
Put/Call ratio: 144%
Price per share: $14.59
Number of holders: 195
Value change: +$32,328,411
Number of buys: 89
Number of sells: 118

Quarterly Holders Quick Answers

What is CUSIP 002121101?
CUSIP 002121101 identifies ATEN - A10 Networks, Inc. - Common Stock in SEC institutional holdings data.

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Explore More Reporting Periods

Jump to adjacent filing periods for faster comparison and easier crawl discovery.

Newer quarter: Q3 2023
Previous quarter: Q1 2023

Recent filing periods for CUSIP 002121101:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Top shareholders of ATEN - A10 Networks, Inc. - Common Stock (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
BlackRock Finance, Inc.	13F	Company	15%	11,848,389	$183,531,547	—	31 Mar 2023	13F
VANGUARD GROUP INC	13F	Company	7.2%	5,625,851	$87,144,433	—	31 Mar 2023	13F
SUMMIT PARTNERS L P	3/4/5 13F	10%+ Owner · Company	5% from 13F	5,388,206	$68,484,098	—	08 Sep 2022	3/4/5 13F
Legal & General Investment Management Ltd	13D/G	Legal & General Group Plc	3.1%	2,405,702	$46,550,093	$0	31 Dec 2021	13D/G
RENAISSANCE TECHNOLOGIES LLC	13F	Company	3.2%	2,487,433	$38,530,000	—	31 Mar 2023	13F
ALLIANCEBERNSTEIN L.P.	13F	Company	3.1%	2,413,880	$37,391,001	—	31 Mar 2023	13F
STATE STREET CORP	13F	Company	3%	2,363,228	$36,606,402	—	31 Mar 2023	13F
FIRST TRUST ADVISORS LP	13F	Company	2.9%	2,257,744	$34,972,454	—	31 Mar 2023	13F
Mirae Asset Global Investments Co., Ltd.	13F	Company	2.4%	1,861,541	$28,835,270	—	31 Mar 2023	13F
Bank of New York Mellon Corp	13F	Company	2.2%	1,675,858	$25,959,032	—	31 Mar 2023	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	1.9%	1,474,456	$22,838,559	—	31 Mar 2023	13F
MORGAN STANLEY	13F	Company	1.6%	1,277,337	$19,785,959	—	31 Mar 2023	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	1.6%	1,206,760	$18,692,717	—	31 Mar 2023	13F
PRICE T ROWE ASSOCIATES INC /MD/	13F	Company	1.4%	1,109,092	$17,181,000	—	31 Mar 2023	13F
Impax Asset Management Group plc	13F	Company	1.3%	1,015,000	$15,722,350	—	31 Mar 2023	13F
PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC.	13F	Company	1.2%	952,339	$14,751,731	—	31 Mar 2023	13F
PEREGRINE CAPITAL MANAGEMENT LLC	13F	Company	1.1%	858,307	$13,295,175	—	31 Mar 2023	13F
WELLS FARGO & COMPANY/MN	13F	Company	1%	807,927	$12,514,798	—	31 Mar 2023	13F
Assenagon Asset Management S.A.	13F	Company	0.93%	719,490	$11,144,900	—	31 Mar 2023	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	0.83%	647,763	$10,033,848	—	31 Mar 2023	13F
Mesirow Institutional Investment Management, Inc.	13F	Company	0.83%	645,837	$10,004,015	—	31 Mar 2023	13F
AMERIPRISE FINANCIAL INC	13F	Company	0.83%	643,811	$9,972,631	—	31 Mar 2023	13F
NORTHERN TRUST CORP	13F	Company	0.82%	638,720	$9,893,773	—	31 Mar 2023	13F
ROYCE & ASSOCIATES LP	13F	Company	0.81%	625,294	$9,685,804	—	31 Mar 2023	13F
BRIDGEWAY CAPITAL MANAGEMENT, LLC	13F	Company	0.79%	614,200	$9,513,958	—	31 Mar 2023	13F
MILLENNIUM MANAGEMENT LLC	13F	Company	0.76%	587,440	$9,099,000	—	31 Mar 2023	13F
TWO SIGMA ADVISERS, LP	13F	Company	0.69%	536,200	$8,305,738	—	31 Mar 2023	13F
Nuveen Asset Management, LLC	13F	Company	0.65%	507,892	$7,867,000	—	31 Mar 2023	13F
RICE HALL JAMES & ASSOCIATES, LLC	13F	Company	0.61%	472,343	$7,316,593	—	31 Mar 2023	13F
GOLDMAN SACHS GROUP INC	13F	Company	0.58%	450,858	$6,983,797	—	31 Mar 2023	13F
TWO SIGMA INVESTMENTS, LP	13F	Company	0.57%	438,743	$6,796,129	—	31 Mar 2023	13F
PARADIGM CAPITAL MANAGEMENT INC/NY	13F	Company	0.55%	427,800	$6,626,622	—	31 Mar 2023	13F
Invesco Ltd.	13F	Company	0.52%	404,688	$6,268,618	—	31 Mar 2023	13F
ALGERT GLOBAL LLC	13F	Company	0.52%	400,560	$6,205,000	—	31 Mar 2023	13F
PRINCIPAL FINANCIAL GROUP INC	13F	Company	0.51%	399,122	$6,182,401	—	31 Mar 2023	13F
DEPRINCE RACE & ZOLLO INC	13F	Company	0.48%	374,511	$5,801,175	—	31 Mar 2023	13F
ETF MANAGERS GROUP, LLC	13F	Company	0.48%	373,301	$5,782,432	—	31 Mar 2023	13F
Cubist Systematic Strategies, LLC	13F	Company	0.43%	337,525	$5,228,262	—	31 Mar 2023	13F
Hillsdale Investment Management Inc.	13F	Company	0.43%	336,600	$5,213,934	—	31 Mar 2023	13F
JPMORGAN CHASE & CO	13F	Company	0.43%	332,462	$5,150,000	—	31 Mar 2023	13F
Allianz Asset Management GmbH	13F	Company	0.42%	324,745	$5,030,300	—	31 Mar 2023	13F
VOYA INVESTMENT MANAGEMENT LLC	13F	Company	0.41%	318,981	$4,941,016	—	31 Mar 2023	13F
Russell Investments Group, Ltd.	13F	Company	0.37%	290,053	$4,492,919	—	31 Mar 2023	13F
Robert D. Cochran	3/4/5	EVP Legal & Corp Collaboration	— class O/S missing	344,161	$4,374,286	—	27 Jun 2022	3/4/5
SEI INVESTMENTS CO	13F	Company	0.33%	254,012	$3,934,649	—	31 Mar 2023	13F
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	13F	Company	0.32%	246,787	$3,823,000	—	31 Mar 2023	13F
Bridge City Capital, LLC	13F	Company	0.31%	236,779	$3,667,707	—	31 Mar 2023	13F
Squarepoint Ops LLC	13F	Company	0.28%	220,631	$3,417,574	—	31 Mar 2023	13F
BNP PARIBAS FINANCIAL MARKETS	13F	Company	0.28%	213,774	$3,311,359	—	31 Mar 2023	13F
OBERWEIS ASSET MANAGEMENT INC/	13F	Company	0.28%	213,700	$3,310,213	—	31 Mar 2023	13F

Institutional Holders of A10 Networks, Inc. - Common Stock (ATEN) as of Q2 2023

As of 30 Jun 2023, A10 Networks, Inc. - Common Stock (ATEN) was held by 195 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 65,353,425 shares. The largest 10 holders included BlackRock Inc., VANGUARD GROUP INC, SUMMIT PARTNERS L P, ALLIANCEBERNSTEIN L.P., STATE STREET CORP, RENAISSANCE TECHNOLOGIES LLC, FIRST TRUST ADVISORS LP, Mirae Asset Global Investments Co., Ltd., Bank of New York Mellon Corp, and DIMENSIONAL FUND ADVISORS LP. This page lists 196 institutional shareholders reporting positions in this security for the Q2 2023 filing period.

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q2 2023 vs Q1 2023 Across Filers

Q1 2023 holders

214

Q2 2023 holders

195

Holder diff

-19

Investor	Q1 2023 Shares	Q2 2023 Shares	Share Diff	Share Chg %	Q1 2023 Value $	Q2 2023 Value $	Value Diff $	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.