ATEN
A10 Networks, Inc. · Technology · Software - Infrastructure
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2024
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 111 | +13 | 56.93M | $2.09B | +19 | −5 |
| Q1 2026 | 100 | +6 | 51.94M | $1.20B | +8 | −3 |
| Q4 2025 | 95 | -2 | 53.78M | $951.26M | +1 | −2 |
| Q3 2025 | 21 | +1 | 36.30M | $658.81M | +1 | −1 |
| Q2 2025 | 18 | +1 | 34.16M | $661.04M | +1 | — |
| Q1 2025 | 14 | -1 | 13.16M | $215.02M | — | −1 |
| Q4 2024 | 15 | +3 | 11.15M | $205.16M | +3 | — |
| Q3 2024 | 11 | 0 | 6.53M | $94.30M | +1 | −1 |
| Q2 2024 | 11 | — | 7.34M | $101.70M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Renaissance Technologies ✦ | 2.28M | — | $31.61M | 0.1% | n/c | 1 | SEC ↗ |
| 2 | Geode Capital Management ✦ (passive) | 1.57M | — | $21.79M | 0.0% | n/c | 1 | SEC ↗ |
| 3 | Geode Capital Management ✦ (passive) | 1.57M | — | $21.79M | 0.0% | n/c | 1 | SEC ↗ |
| 4 | T. Rowe Price ✦ | 1.34M | — | $18.58M | 0.0% | n/c | 1 | SEC ↗ |
| 5 | T. Rowe Price ✦ | 1.34M | — | $18.58M | 0.0% | n/c | 1 | SEC ↗ |
| 6 | Millennium Management ✦ | 690.41K | — | $9.56M | 0.0% | n/c | 1 | SEC ↗ |
| 7 | Citadel Advisors ✦ | 686.66K | — | $9.51M | 0.0% | n/c | 1 | SEC ↗ |
| 8 | Citadel Advisors ✦ | 686.66K | — | $9.51M | 0.0% | n/c | 1 | SEC ↗ |
| 9 | D. E. Shaw & Co. ✦ | 246.41K | — | $3.41M | 0.0% | n/c | 1 | SEC ↗ |
| 10 | Marshall Wace ✦ | 191.13K | — | $2.65M | 0.0% | n/c | 1 | SEC ↗ |
| 11 | Marshall Wace ✦ | 191.13K | — | $2.65M | 0.0% | n/c | 1 | SEC ↗ |
| 12 | Two Sigma Investments ✦ | 169.97K | — | $2.35M | 0.0% | n/c | 1 | SEC ↗ |
| 13 | Fisher Asset Management ✦ | 90.71K | — | $1.26M | 0.0% | n/c | 1 | SEC ↗ |
| 14 | GAMCO Investors ✦ | 44.00K | — | $609,400 | 0.0% | n/c | 1 | SEC ↗ |
| 15 | AQR Capital Management ✦ | 26.06K | — | $360,903 | 0.0% | n/c | 1 | SEC ↗ |
| 16 | AQR Capital Management ✦ | 26.06K | — | $360,903 | 0.0% | n/c | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| No new tracked buyers this quarter. |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 263 holders, 71.95M shares, $1.53B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Director · 2.65K sh · $68,024
Officer · 14.09K sh · $392,436
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology