Ticker · CUSIP 002121101

ATEN

A10 NETWORKS INC
Technology·Software - Infrastructure
···Share
Holders (tracked)
11
Combined shares
7,341,880
Combined value
$102.72M
Last close
—
Quarter
2025Q4
Tracked holders · last 8 quarters
-1 vs previous quarter over the last 8.
11102024Q12025Q4

SEC event timeline

23 events
  1. AQR Capital Management trimmed2026-02-17
    −3,852 shares · 2025Q4
    13F
  2. Izzy Englander (Millennium Mgmt) added2026-02-17
    +67,227 shares · 2025Q4
    13F
  3. T. Rowe Price trimmed2026-02-17
    −36,437 shares · 2025Q4
    13F
  4. Wellington Management trimmed2026-02-17
    −34,146 shares · 2025Q4
    13F
  5. Paul Tudor Jones (Tudor Investment) opened position2026-02-17
    +370,444 shares · 2025Q4
    13F
  6. Ken Griffin (Citadel Advisors) trimmed2026-02-17
    −198,777 shares · 2025Q4
    13F
  7. Two Sigma Investments added2026-02-17
    +50,488 shares · 2025Q4
    13F
  8. D.E. Shaw & Co. exited2026-02-17
    −14,242 shares · 2025Q4
    13F
  9. Renaissance Technologies trimmed2026-02-12
    −252,053 shares · 2025Q4
    13F
  10. Norges Bank (Norway SWF) opened position2026-02-10
    +26,272 shares · 2025Q4
    13F
  11. Ken Fisher (Fisher Asset Mgmt) added2026-02-09
    +4,875 shares · 2025Q4
    13F
  12. Mario Gabelli (GAMCO) added2026-02-05
    +750 shares · 2025Q4
    13F
  13. Paul Tudor Jones (Tudor Investment) exited2025-12-09
    −404,209 shares · 2025Q3
    13F
  14. AQR Capital Management added2025-11-14
    +377 shares · 2025Q3
    13F
  15. Two Sigma Investments added2025-11-14
    +110,082 shares · 2025Q3
    13F
  16. D.E. Shaw & Co. trimmed2025-11-14
    −7,098 shares · 2025Q3
    13F
  17. T. Rowe Price added2025-11-14
    +68,210 shares · 2025Q3
    13F
  18. Wellington Management added2025-11-14
    +588,922 shares · 2025Q3
    13F
  19. Izzy Englander (Millennium Mgmt) added2025-11-14
    +51,718 shares · 2025Q3
    13F
  20. Renaissance Technologies trimmed2025-11-13
    −113,119 shares · 2025Q3
    13F
  21. Norges Bank (Norway SWF) exited2025-11-13
    −26,272 shares · 2025Q3
    13F
  22. Mario Gabelli (GAMCO) trimmed2025-11-12
    −2,000 shares · 2025Q3
    13F
  23. Ken Fisher (Fisher Asset Mgmt) trimmed2025-11-12
    −5,258 shares · 2025Q3
    13F

Insider activity

No insider transactions in the last 30 days.
View full insider history for ATEN →

Who moved on this name in 2025Q4

13F transactions reported for the latest quarter, grouped by direction.
New positions2
Added to4
Trimmed5
Exited1

Institutional ownership over time

Distinct super-investors holding this ticker · combined dollar value, by quarter.
QuarterHoldersCombined value
2022Q1
12
$146.3M
2022Q2
12
$207.8M
2022Q3
12
$223K
2022Q4
14
$206.3M
2023Q1
13
$195.2M
2023Q2
12
$195.5M
2023Q3
10
$201.7M
2023Q4
10
$184.1M
2024Q1
10
$183.3M
2024Q2
13
$239.7M
2024Q3
11
$51.1M
2024Q4
13
$70.5M
2025Q1
12
$83.4M
2025Q2
13
$106.0M
2025Q3
12
$105.6M
2025Q4
11
$102.7M

Who owns ATEN

11 super-investors · 2025Q4
Tracked stake
7.34M
shares
Combined value
$103M
% of shares outstanding
—
shares-out unknown
Quarter action mix
New2Added4Trim5
#ManagerSharesValue
1Renaissance Technologies2.13M$38M
2Wellington Management2.02M$36M
3Two Sigma Investments733.7K$13M
4Paul Tudor Jones
Tudor Investment
370.4K$7M
5Izzy Englander
Millennium Mgmt
212.1K$4M
6Ken Griffin
Citadel Advisors
152.0K$3M
7Ken Fisher
Fisher Asset Mgmt
74.6K$1M
8Mario Gabelli
GAMCO
42.8K$756K
9AQR Capital Management38.6K$683K
10Norges Bank
Norway SWF
26.3K$465K
11T. Rowe Price1.54M$27K

Recent moves

20 transactions
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