- Type / Class
- Equity / Common Stock
- Shares outstanding
- 71,754,597
- Total 13F shares
- 70,281,976
- Share change
- -482,688
- Total reported value
- $1,243,378,114
- Price per share
- $17.69
- Number of holders
- 240
- Value change
- -$9,201,116
- Number of buys
- 116
- 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.
Need full ownership history?
Open the full security ownership history page.
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- Latest 13F filings for newly reported positions across managers.
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Jump to adjacent filing periods for faster comparison and easier crawl discovery.
Recent filing periods for CUSIP 002121101:
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, Inc. |
13F
|
Company |
18%
|
13,058,107
|
$237,004,635 | — | 30 Sep 2025 | |
| VANGUARD GROUP INC |
13F
|
Company |
10%
|
7,235,070
|
$131,316,521 | — | 30 Sep 2025 | |
| SUMMIT PARTNERS L P |
3/4/5
13F
|
10%+ Owner · Company |
0.26%
from 13F
|
5,388,206
|
$68,484,098 | — | 08 Sep 2022 | |
| Penserra Capital Management LLC |
13F
|
Company |
5.1%
|
3,658,453
|
$66,400,000 | — | 30 Sep 2025 | |
| STATE STREET CORP |
13F
|
Company |
4.6%
|
3,288,187
|
$59,680,594 | — | 30 Sep 2025 | |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. |
13F
|
Company |
3.8%
|
2,699,629
|
$48,996,668 | — | 30 Sep 2025 | |
| Boston Trust Walden Corp |
13F
|
Company |
3.7%
|
2,639,992
|
$47,915,855 | — | 30 Sep 2025 | |
| Legal & General Investment Management Ltd |
13D/G
|
Legal & General Group Plc |
3.1%
|
2,405,702
|
$46,550,093 | $0 | 31 Dec 2021 | |
| RENAISSANCE TECHNOLOGIES LLC |
13F
|
Company |
3.3%
|
2,386,787
|
$43,320,184 | — | 30 Sep 2025 | |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
|
Company |
2.9%
|
2,054,213
|
$37,283,967 | — | 30 Sep 2025 | |
| FIRST TRUST ADVISORS LP |
13F
|
Company |
2.8%
|
2,034,271
|
$36,922,018 | — | 30 Sep 2025 | |
| GEODE CAPITAL MANAGEMENT, LLC |
13F
|
Company |
2.5%
|
1,767,579
|
$32,086,352 | — | 30 Sep 2025 | |
| DIMENSIONAL FUND ADVISORS LP |
13F
|
Company |
2.3%
|
1,633,590
|
$29,649,104 | — | 30 Sep 2025 | |
| PRICE T ROWE ASSOCIATES INC /MD/ |
13F
|
Company |
2.2%
|
1,573,065
|
$28,552,000 | — | 30 Sep 2025 | |
| PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC. |
13F
|
Company |
2%
|
1,431,358
|
$25,979,151 | — | 30 Sep 2025 | |
| BARCLAYS PLC |
13F
|
Company |
1.9%
|
1,365,259
|
$24,779,451 | — | 30 Sep 2025 | |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP |
13F
|
Company |
1.7%
|
1,226,347
|
$22,258,198 | — | 30 Sep 2025 | |
| MORGAN STANLEY |
13F
|
Company |
1.1%
|
755,476
|
$13,711,933 | — | 30 Sep 2025 | |
| Invesco Ltd. |
13F
|
Company |
1%
|
741,030
|
$13,449,694 | — | 30 Sep 2025 | |
| NORTHERN TRUST CORP |
13F
|
Company |
1%
|
727,631
|
$13,206,504 | — | 30 Sep 2025 | |
| Bank of New York Mellon Corp |
13F
|
Company |
1%
|
717,401
|
$13,020,835 | — | 30 Sep 2025 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC |
13F
|
Company |
0.99%
|
709,212
|
$12,872,198 | — | 30 Sep 2025 | |
| ROYCE & ASSOCIATES LP |
13F
|
Company |
0.97%
|
694,828
|
$12,611,128 | — | 30 Sep 2025 | |
| TWO SIGMA INVESTMENTS, LP |
13F
|
Company |
0.95%
|
683,246
|
$12,400,915 | — | 30 Sep 2025 | |
| GOLDMAN SACHS GROUP INC |
13F
|
Company |
0.86%
|
620,182
|
$11,256,298 | — | 30 Sep 2025 | |
| UBS Group AG |
13F
|
Company |
0.84%
|
606,156
|
$11,001,731 | — | 30 Sep 2025 | |
| Qube Research & Technologies Ltd |
13F
|
Company |
0.79%
|
563,476
|
$10,227,089 | — | 30 Sep 2025 | |
| VICTORY CAPITAL MANAGEMENT INC |
13F
|
Company |
0.65%
|
467,367
|
$8,482,711 | — | 30 Sep 2025 | |
| TWO SIGMA ADVISERS, LP |
13F
|
Company |
0.63%
|
453,400
|
$8,229,210 | — | 30 Sep 2025 | |
| Aptus Capital Advisors, LLC |
13F
|
Company |
0.62%
|
448,423
|
$8,138,878 | — | 30 Sep 2025 | |
| PRINCIPAL FINANCIAL GROUP INC |
13F
|
Company |
0.59%
|
421,423
|
$7,648,827 | — | 30 Sep 2025 | |
| Bridge City Capital, LLC |
13F
|
Company |
0.58%
|
419,748
|
$7,618,426 | — | 30 Sep 2025 | |
| PARADIGM CAPITAL MANAGEMENT INC/NY |
13F
|
Company |
0.57%
|
407,000
|
$7,387,050 | — | 30 Sep 2025 | |
| JPMORGAN CHASE & CO |
13F
|
Company |
0.53%
|
380,161
|
$6,899,933 | — | 30 Sep 2025 | |
| Impax Asset Management Group plc |
13F
|
Company |
0.5%
|
360,000
|
$6,534,000 | — | 30 Sep 2025 | |
| CITADEL ADVISORS LLC |
13F
|
Company |
0.49%
|
350,793
|
$6,366,893 | — | 30 Sep 2025 | |
| TUDOR INVESTMENT CORP ET AL |
13F
|
Company |
0.45%
|
319,422
|
$5,797,509 | — | 30 Sep 2025 | |
| CRAWFORD INVESTMENT COUNSEL INC |
13F
|
Company |
0.4%
|
286,817
|
$5,205,729 | — | 30 Sep 2025 | |
| PUBLIC SECTOR PENSION INVESTMENT BOARD |
13F
|
Company |
0.39%
|
281,460
|
$5,108,499 | — | 30 Sep 2025 | |
| RICE HALL JAMES & ASSOCIATES, LLC |
13F
|
Company |
0.38%
|
273,797
|
$4,969,416 | — | 30 Sep 2025 | |
| Connor, Clark & Lunn Investment Management Ltd. |
13F
|
Company |
0.37%
|
268,944
|
$4,881,334 | — | 30 Sep 2025 | |
| PEREGRINE CAPITAL MANAGEMENT LLC |
13F
|
Company |
0.35%
|
252,746
|
$4,587,340 | — | 30 Sep 2025 | |
| VOYA INVESTMENT MANAGEMENT LLC |
13F
|
Company |
0.35%
|
248,468
|
$4,509,695 | — | 30 Sep 2025 | |
| AMERICAN CENTURY COMPANIES INC |
13F
|
Company |
0.34%
|
245,534
|
$4,456,442 | — | 30 Sep 2025 | |
| Robert D. Cochran |
3/4/5
|
EVP Legal & Corp Collaboration |
—
class O/S missing
|
344,161
|
$4,374,286 | — | 27 Jun 2022 | |
| IQ EQ FUND MANAGEMENT (IRELAND) Ltd |
13F
|
Company |
0.33%
|
238,252
|
$4,324,274 | — | 30 Sep 2025 | |
| HARBOR CAPITAL ADVISORS, INC. |
13F
|
Company |
0.33%
|
238,135
|
$4,322,000 | — | 30 Sep 2025 | |
| Legal & General Group Plc |
13F
|
Company |
0.3%
|
214,466
|
$3,892,557 | — | 30 Sep 2025 | |
| HUSSMAN STRATEGIC ADVISORS, INC. |
13F
|
Company |
0.29%
|
210,000
|
$3,811,500 | — | 30 Sep 2025 | |
| Man Group plc |
13F
|
Company |
0.29%
|
206,937
|
$3,755,907 | — | 30 Sep 2025 |
Institutional Holders of A10 Networks, Inc. - Common Stock (ATEN) as of Q4 2025
As of 31 Dec 2025,
A10 Networks, Inc. - Common Stock (ATEN) was held by
240 institutional
shareholders
that filed Form 13F with the SEC.
Together, they reported ownership of
70,281,976 shares.
The largest 10 holders included
BlackRock, Inc., VANGUARD GROUP INC, Penserra Capital Management LLC, STATE STREET CORP, FIRST TRUST ADVISORS LP, Boston Trust Walden Corp, RENAISSANCE TECHNOLOGIES LLC, WELLINGTON MANAGEMENT GROUP LLP, BARCLAYS PLC, and GEODE CAPITAL MANAGEMENT, LLC.
This page lists
240
institutional shareholders reporting positions in this security
for the Q4 2025 filing period.
| Investor | Option | Weight % | Change % | Value $ | * Price | Shares | Share Change | Activity | Report Period |
|---|
Compare Q4 2025 vs Q3 2025 Across Filers
Q3 2025 holders
235
Q4 2025 holders
240
Holder diff
5
| Investor | Q3 2025 Shares | Q4 2025 Shares | Share Diff | Share Chg % | Q3 2025 Value $ | Q4 2025 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.
An asterisk sign (*) next to the price indicates that the price is likely invalid.