ATEN
A10 Networks, Inc. · Technology · Software - Infrastructure
Momentum inputs (comparable managers):
holder breadth +25.0% ·
share flow +13.1% ·
net new positions +20.0%
— formula
Broad accumulation — rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q4 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 | State Street Global Advisors ✦ (passive) | 3.33M | — | $61.28M | 0.0% | n/c | 1 | SEC ↗ |
| 2 | Renaissance Technologies ✦ | 1.93M | -0.8% | $35.57M | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 3 | Geode Capital Management ✦ (passive) | 1.68M | +0.9% | $30.87M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 4 | Geode Capital Management ✦ (passive) | 1.68M | +0.9% | $30.87M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 5 | T. Rowe Price ✦ | 1.47M | +2.6% | $27.01M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 6 | T. Rowe Price ✦ | 1.47M | +2.6% | $27.01M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 7 | Marshall Wace ✦ | 683.71K | +364.8% | $12.58M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 8 | Marshall Wace ✦ | 683.71K | +364.8% | $12.58M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 9 | Norges Bank ✦ (passive) | 391.43K | New | $7.20M | 0.0% | New | 1 | SEC ↗ |
| 10 | Citadel Advisors ✦ | 388.20K | -36.1% | $7.14M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 11 | Citadel Advisors ✦ | 388.20K | -36.1% | $7.14M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 12 | Millennium Management ✦ | 275.52K | +59.3% | $5.07M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 13 | Arrowstreet Capital ✦ | 246.97K | +298.3% | $4.54M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 14 | Wellington Management ✦ | 230.20K | New | $4.24M | 0.0% | New | 1 | SEC ↗ |
| 15 | Wellington Management ✦ | 230.20K | New | $4.24M | 0.0% | New | 1 | SEC ↗ |
| 16 | Wellington Management ✦ | 230.20K | New | $4.24M | 0.0% | New | 1 | SEC ↗ |
| 17 | Two Sigma Investments ✦ | 229.65K | -14.4% | $4.23M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 18 | AQR Capital Management ✦ | 134.68K | +54.4% | $2.48M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 19 | AQR Capital Management ✦ | 134.68K | +54.4% | $2.48M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 20 | AQR Capital Management ✦ | 134.68K | +54.4% | $2.48M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 21 | Fisher Asset Management ✦ | 91.88K | -7.4% | $1.69M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 22 | GAMCO Investors ✦ | 44.00K | 0.0% | $809,600 | 0.0% | Held | 3 | SEC ↗ |
| 23 | Point72 Asset Management ✦ | 24.34K | New | $447,807 | 0.0% | New | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Norges Bank | $7.20M | 0.0% |
| Wellington Management | $4.24M | 0.0% |
| Wellington Management | $4.24M | 0.0% |
| Wellington Management | $4.24M | 0.0% |
| Point72 Asset Management | $447,807 | 0.0% |
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