BAND
Bandwidth Inc. · Technology · Software - Infrastructure
Momentum inputs (comparable managers):
holder breadth -11.8% ·
share flow -1.4% ·
net new positions -13.3%
— formula
Broad distribution — falling shares and fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 96 | +25 | 19.71M | $1.24B | +31 | −6 |
| Q1 2026 | 73 | +2 | 16.12M | $286.88M | +5 | −3 |
| Q4 2025 | 71 | +1 | 15.74M | $243.20M | +1 | — |
| Q3 2025 | 15 | -2 | 9.73M | $162.19M | — | −2 |
| Q2 2025 | 14 | -1 | 8.93M | $142.00M | — | −1 |
| Q1 2025 | 12 | +1 | 3.45M | $45.26M | +2 | −1 |
| Q4 2024 | 11 | 0 | 3.03M | $51.59M | +1 | −1 |
| Q3 2024 | 10 | -2 | 2.28M | $39.91M | — | −2 |
| Q2 2024 | 12 | — | 2.59M | $43.78M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 2.87M | -0.8% | $47.76M | 0.0% | ▼ Trim | 2 | SEC ↗ ×11 |
| 2 | The Vanguard Group ✦ (passive) | 1.99M | +3.5% | $33.15M | 0.0% | ▲ Add | 2 | SEC ↗ ×4 |
| 3 | Geode Capital Management ✦ (passive) | 664.87K | +2.5% | $11.09M | 0.0% | ▲ Add | 6 | SEC ↗ ×2 |
| 4 | Renaissance Technologies ✦ | 648.90K | -9.6% | $10.82M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 5 | State Street Global Advisors ✦ (passive) | 632.77K | +5.0% | $10.55M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 6 | Goldman Sachs Group ✦ | 540.34K | — | $9.01M | 0.0% | n/c | 1 | SEC ↗ ×2 |
| 7 | Wellington Management ✦ | 437.26K | +197.7% | $7.29M | 0.0% | ▲ Add | 3 | SEC ↗ ×5 |
| 8 | AQR Capital Management ✦ | 432.13K | -26.4% | $7.20M | 0.0% | ▼ Trim | 6 | SEC ↗ ×5 |
| 9 | D. E. Shaw & Co. ✦ | 367.33K | -21.2% | $6.12M | 0.0% | ▼ Trim | 6 | SEC ↗ ×2 |
| 10 | Fidelity (FMR) ✦ | 365.35K | +6.6% | $6.09M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 11 | Morgan Stanley ✦ | 297.10K | — | $4.95M | 0.0% | n/c | 1 | SEC ↗ ×9 |
| 12 | Arrowstreet Capital ✦ | 192.37K | -48.5% | $3.21M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 13 | Two Sigma Investments ✦ | 166.46K | +77.3% | $2.77M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 14 | JPMorgan Chase ✦ | 103.45K | — | $1.72M | 0.0% | n/c | 1 | SEC ↗ ×12 |
| 15 | T. Rowe Price ✦ | 27.65K | +2.5% | $461,000 | 0.0% | ▲ Add | 6 | 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
| Millennium Management | $1.42M | was 0.0% |
| Citadel Advisors | $434,165 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 6 holders, 64.43M shares, $57.53M 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 · 1.50K sh · $72,900
Officer · 753 sh · $37,115
Officer · 1.15K sh · $55,827
Officer · 2.10K sh · $99,643
Officer · 3.29K sh · $164,443
Officer · 1.40K sh · $68,582
Officer · 2.54K sh · $121,057
Officer · 3.07K sh · $150,546
Officer, Director · 1.59K sh · $77,481
Officer · 2.85K sh · $139,096
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology