SAN JOSE, CA
A10 NETWORKS, INC.ATEN— Latest position per institution from SEC 13F filings
15
Institutional holders
71.25M
Total shares held
1.30B
Estimated value
3.56M
Avg. position size
BLACKROCK, INC.
CIK 2012383
Shares
13.09M
Value
302.60M
Filed
Mar 31, 2026
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
12.73M
Value
176.28M
Filed
Jun 30, 2024
VANGUARD GROUP INC
CIK 102909
Shares
7.24M
Value
128.11M
Filed
Dec 31, 2025
WALLEYE CAPITAL LLC
CIK 1758720
Shares
5M
Value
5.96M
Filed
Mar 31, 2026
PENSERRA CAPITAL MANAGEMENT LLC
CIK 1593324
Shares
3.59M
Value
83.09K
Filed
Mar 31, 2026
VANGUARD PORTFOLIO MANAGEMENT LLC
CIK 2100121
Shares
3.39M
Value
78.33M
Filed
Mar 31, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
3.12M
Value
72.16M
Filed
Mar 31, 2026
STATE STREET CORP
CIK 93751
Shares
3.09M
Value
71.45M
Filed
Mar 31, 2026
BOSTON TRUST WALDEN CORP
CIK 1534866
Shares
2.17M
Value
50.25M
Filed
Mar 31, 2026
WELLINGTON MANAGEMENT GROUP LLP
CIK 902219
Shares
2.07M
Value
47.96M
Filed
Mar 31, 2026
BARCLAYS PLC
CIK 312069
Shares
1.87M
Value
43.34M
Filed
Mar 31, 2026
RENAISSANCE TECHNOLOGIES LLC
CIK 1037389
Shares
1.78M
Value
41.27M
Filed
Mar 31, 2026
FIRST TRUST ADVISORS LP
CIK 1125816
Shares
1.72M
Value
39.76M
Filed
Mar 31, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
1.72M
Value
39.71M
Filed
Mar 31, 2026
DIMENSIONAL FUND ADVISORS LP
CIK 354204
Shares
1.64M
Value
37.82M
Filed
Mar 31, 2026
MIRAE ASSET GLOBAL ETFS HOLDINGS LTD.
CIK 1705339
Shares
1.56M
Value
35.97M
Filed
Mar 31, 2026
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 1164508
Shares
1.50M
Value
34.61M
Filed
Mar 31, 2026
PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC.
CIK 1238990
Shares
1.46M
Value
33.75M
Filed
Mar 31, 2026
TWO SIGMA INVESTMENTS, LP
CIK 1179392
Shares
1.32M
Value
30.52M
Filed
Mar 31, 2026
GOLDMAN SACHS GROUP INC
CIK 886982
Shares
1.19M
Value
27.44M
Filed
Mar 31, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | BLACKROCK, INC. | 2012383 | 13.09M | 302.60M | Mar 31, 2026 |
| 2 | BLACKROCK FINANCE, INC. | 1364742 | 12.73M | 176.28M | Jun 30, 2024 |
| 3 | VANGUARD GROUP INC | 102909 | 7.24M | 128.11M | Dec 31, 2025 |
| 4 | WALLEYE CAPITAL LLC | 1758720 | 5M | 5.96M | Mar 31, 2026 |
| 5 | PENSERRA CAPITAL MANAGEMENT LLC | 1593324 | 3.59M | 83.09K | Mar 31, 2026 |
| 6 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | 3.39M | 78.33M | Mar 31, 2026 |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 3.12M | 72.16M | Mar 31, 2026 |
| 8 | STATE STREET CORP | 93751 | 3.09M | 71.45M | Mar 31, 2026 |
| 9 | BOSTON TRUST WALDEN CORP | 1534866 | 2.17M | 50.25M | Mar 31, 2026 |
| 10 | WELLINGTON MANAGEMENT GROUP LLP | 902219 | 2.07M | 47.96M | Mar 31, 2026 |
| 11 | BARCLAYS PLC | 312069 | 1.87M | 43.34M | Mar 31, 2026 |
| 12 | RENAISSANCE TECHNOLOGIES LLC | 1037389 | 1.78M | 41.27M | Mar 31, 2026 |
| 13 | FIRST TRUST ADVISORS LP | 1125816 | 1.72M | 39.76M | Mar 31, 2026 |
| 14 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 1.72M | 39.71M | Mar 31, 2026 |
| 15 | DIMENSIONAL FUND ADVISORS LP | 354204 | 1.64M | 37.82M | Mar 31, 2026 |
| 16 | MIRAE ASSET GLOBAL ETFS HOLDINGS LTD. | 1705339 | 1.56M | 35.97M | Mar 31, 2026 |
| 17 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 1164508 | 1.50M | 34.61M | Mar 31, 2026 |
| 18 | PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC. | 1238990 | 1.46M | 33.75M | Mar 31, 2026 |
| 19 | TWO SIGMA INVESTMENTS, LP | 1179392 | 1.32M | 30.52M | Mar 31, 2026 |
| 20 | GOLDMAN SACHS GROUP INC | 886982 | 1.19M | 27.44M | Mar 31, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.