ATEN
A10 Networks, Inc. · Technology · Software - Infrastructure
Momentum inputs (comparable managers): holder breadth 0.0% · share flow -11.1% · net new positions 0.0% — formula
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 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 ✦ | 1.95M | -14.6% | $28.14M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 2 | Geode Capital Management ✦ (passive) | 1.66M | +5.7% | $24.01M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 3 | Geode Capital Management ✦ (passive) | 1.66M | +5.7% | $24.01M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 4 | T. Rowe Price ✦ | 1.43M | +6.6% | $20.65M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 5 | T. Rowe Price ✦ | 1.43M | +6.6% | $20.65M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 6 | Citadel Advisors ✦ | 607.73K | -11.5% | $8.78M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 7 | Citadel Advisors ✦ | 607.73K | -11.5% | $8.78M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 8 | Two Sigma Investments ✦ | 268.32K | +57.9% | $3.87M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 9 | Millennium Management ✦ | 172.92K | -75.0% | $2.50M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 10 | Marshall Wace ✦ | 147.11K | -23.0% | $2.12M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 11 | Marshall Wace ✦ | 147.11K | -23.0% | $2.12M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 12 | Fisher Asset Management ✦ | 99.24K | +9.4% | $1.43M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 13 | AQR Capital Management ✦ | 87.21K | +234.7% | $1.26M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 14 | AQR Capital Management ✦ | 87.21K | +234.7% | $1.26M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 15 | Arrowstreet Capital ✦ | 62.01K | New | $895,352 | 0.0% | New | 1 | SEC ↗ |
| 16 | GAMCO Investors ✦ | 44.00K | 0.0% | $635,360 | 0.0% | Held | 2 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Arrowstreet Capital | $895,352 | 0.0% |
Exited
| D. E. Shaw & Co. | $3.41M | was 0.0% |
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