Security key
002121101
- Security type / class
- Equity / Common
- Total 13F shares
- 70,175,328
- Total 13F value
- $1,273,706,190
- Share change
- -254,977
- Put/Call ratio
- 194%
- SEC-reported price per share
- $18.15
- Number of holders
- 235
- Value change
- -$5,933,480
- Number of buys
- 126
- Number of sells
- 115
- Shares outstanding
- 71,994,925
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q3 2025
Institutions
235
Top holders
10
ATEN full security history
Ownership snapshot
Full 13F holder table
A10 Networks, Inc. SEC filings
A10 Networks, Inc. company facts
Broader feeds
Ownership snapshot
Top reported holders of ATEN - A10 Networks, Inc. - Common (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Legal & General Investmen...
Disclosed value leader
BlackRock, Inc.
Comparable rows
15/15
Latest evidence
13 Aug 2025
13D/G
3/4/5
13F
Lead comparable stake: 3.1%
13D/G row: Legal & General Investment Management Ltd
Showing 1-6 of 15 holder rows.
Quick read
Legal & General Investment Management Ltd leads the comparable SEC ownership view at 3.1%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Legal & General Investment Management Ltd's linked filing trail.
Comparable ownership
Top 5
Legal & General Investment Manage...
3.1%
Brian Becker
0.11%
BlackRock, Inc.
18%
VANGUARD GROUP INC
10%
Penserra Capital Management LLC
5.5%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Legal & General Investment Management Ltd |
13D/G
Legal & General Group Plc
|
3.1%
|
$46,550,093
2,405,702 shares
|
$0 | 31 Dec 2021 |
| Brian Becker |
3/4/5
Chief Financial Officer
|
0.11%
|
$1,399,109
77,599 shares
|
— | 13 Aug 2025 |
| BlackRock, Inc. |
13F
Company
|
18%
|
$255,994,948
13,229,713 shares
|
— | 30 Jun 2025 |
| VANGUARD GROUP INC |
13F
Company
|
10%
|
$141,789,390
7,327,617 shares
|
— | 30 Jun 2025 |
| Penserra Capital Management LLC |
13F
Company
|
5.5%
|
$76,722,000
3,964,989 shares
|
— | 30 Jun 2025 |
| STATE STREET CORP |
13F
Company
|
4.6%
|
$64,293,336
3,322,653 shares
|
— | 30 Jun 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q3 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
235
Shares
70,175,328
Rows available
235
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q3 2025 vs Q2 2025 Across Filers
Q2 2025 holders
228
Q3 2025 holders
235
Holder diff
7
| Investor | Q2 2025 Shares | Q3 2025 Shares | Share Diff | Share Chg % | Q2 2025 value | Q3 2025 value | Value change | Value Chg % |
|---|