AMPL
Amplitude, Inc. · Technology · Software - Application
Momentum inputs (comparable managers):
holder breadth +20.0% ·
share flow +12.0% ·
net new positions +16.7%
— formula
Broad accumulation — rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 74 | -8 | 54.15M | $414.06M | +1 | −10 |
| Q1 2026 | 86 | +5 | 57.50M | $393.68M | +9 | −4 |
| Q4 2025 | 81 | +1 | 59.90M | $693.58M | +1 | — |
| Q3 2025 | 17 | -4 | 37.31M | $399.92M | — | −4 |
| Q2 2025 | 18 | +3 | 34.21M | $424.20M | +3 | — |
| Q1 2025 | 12 | +2 | 9.07M | $92.46M | +2 | — |
| Q4 2024 | 10 | +2 | 5.23M | $55.15M | +2 | — |
| Q3 2024 | 7 | 0 | 2.54M | $22.81M | — | — |
| Q2 2024 | 7 | — | 2.41M | $21.49M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | The Vanguard Group ✦ (passive) | 9.64M | — | $119.52M | 0.0% | n/c | 1 | SEC ↗ ×5 |
| 2 | BlackRock ✦ (passive) | 8.53M | — | $105.82M | 0.0% | n/c | 1 | SEC ↗ ×14 |
| 3 | Fidelity (FMR) ✦ | 3.29M | — | $40.78M | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 4 | State Street Global Advisors ✦ (passive) | 2.19M | +6.0% | $27.13M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 5 | Geode Capital Management ✦ (passive) | 2.16M | +7.4% | $26.77M | 0.0% | ▲ Add | 5 | SEC ↗ ×2 |
| 6 | Baillie Gifford ✦ | 1.98M | -0.6% | $24.53M | 0.0% | ▼ Trim | 2 | SEC ↗ ×4 |
| 7 | Millennium Management ✦ | 1.91M | +808.5% | $23.64M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 8 | Point72 Asset Management ✦ | 1.20M | +247.8% | $14.82M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 9 | Marshall Wace ✦ | 725.75K | +56.8% | $9.00M | 0.0% | ▲ Add | 3 | SEC ↗ ×4 |
| 10 | Citadel Advisors ✦ | 498.62K | -57.4% | $6.18M | 0.0% | ▼ Trim | 5 | SEC ↗ ×2 |
| 11 | Two Sigma Investments ✦ | 472.28K | New | $5.86M | 0.0% | New | 1 | SEC ↗ |
| 12 | Arrowstreet Capital ✦ | 418.09K | +1454.4% | $5.18M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 13 | Adage Capital Partners ✦ | 275.00K | New | $3.41M | 0.0% | New | 1 | SEC ↗ |
| 14 | Renaissance Technologies ✦ | 247.30K | -35.5% | $3.07M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 15 | T. Rowe Price ✦ | 245.24K | +52.7% | $3.04M | 0.0% | ▲ Add | 5 | SEC ↗ ×2 |
| 16 | Wellington Management ✦ | 229.37K | New | $2.84M | 0.0% | New | 1 | SEC ↗ ×2 |
| 17 | AQR Capital Management ✦ | 199.16K | -12.1% | $2.47M | 0.0% | ▼ Trim | 5 | SEC ↗ ×4 |
| 18 | D. E. Shaw & Co. ✦ | 11.55K | -49.4% | $143,282 | 0.0% | ▼ Trim | 5 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Two Sigma Investments | $5.86M | 0.0% |
| Adage Capital Partners | $3.41M | 0.0% |
| Wellington Management | $2.84M | 0.0% |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 215 holders, 83.03M shares, $560.03M 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)
Officer, Director, 10% owner · 70.09K sh · $1.02M
Officer, Director, 10% owner · 3.54K sh · $51,139
Officer, Director, 10% owner · 1.37K sh · $19,858
Officer, Director, 10% owner · 185.00K sh · $2.28M
Officer · 300.00K sh · $3.90M
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology