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A10 Networks ATEN

US equityMarket cap rank #2762
$28.19 +$0.56 (+2.03%)
Pre-market · Oct 6, 7:40 am ET · After hours $28.20 +0.04%
Open$27.78
Prev close$27.63
Day range$27.25 – $28.45
Volume993.1K
Market cap$2.05B
P/E (TTM)48.6
Dividend yield0.85%

Ownership & positioning

Who holds it, who is betting against it, and where the big money is moving

Institutional ownership108.3%-0.51 pts vs. prior quarter
Institutions holding386-1 vs. prior quarter
Insider trades (recent)21 buys / 29 sellsNet selling
Short interest13.38% of floatDays to cover 9.9 · as of 15 Sep 2026
Short-sale volume share21.0%5-day average of daily volume

Short-sale volume as % of daily volume

5%13%22%31%Sep '26Sep '26Oct '26

Large-order net flow, last 20 sessions

Net of large-order buying minus selling, in USD. Over this window: −$4.13M (7 inflow days, 13 outflow days).

The five largest holders on file together own 37.1% of shares outstanding.

Largest holders

  • BlackRock18.69%
  • Vanguard Capital Management, LLC4.93%
  • Vanguard Portfolio Management, LLC4.77%
  • First Trust Advisors L.P.4.47%
  • State Street Global Advisors4.25%
  • Penserra Capital Management LLC4.23%
  • Boston Trust Walden National Association3.33%
  • Wellington Management Group2.70%

By investor type

  • Mutual Fund93.31%
  • Hedge Fund6.16%
  • Public Company4.77%
  • Private Company2.03%
  • Individual/Insider1.74%
  • Government Pension Fund1.17%
  • Family Office/Trust0.29%
  • VC/PE Fund0.28%

Reported short interest has risen from 9.96% to 13.38% of float over the last 6 biweekly reports (30 Jun 2026 to 15 Sep 2026).

Short interest, by report

Report dateShares short% of floatDays to cover
15 Sep 2026 9,713,373 13.4% 9.9
31 Aug 2026 8,941,365 12.3% 6.3
14 Aug 2026 7,543,199 10.4% 5.3
31 Jul 2026 7,614,474 10.6% 5.6
15 Jul 2026 6,846,972 9.5% 6.1
30 Jun 2026 7,169,187 10.0% 4.6

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