RBBN
Ribbon Communications Inc. · Technology · Software - Application
Momentum inputs (comparable managers):
holder breadth -11.1% ·
share flow +7.3% ·
net new positions -12.5%
· formula
Concentrated accumulation: rising shares among fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q3 2026 | 3 | 0 | 52.34K | $91,530 | n/a | n/a |
| Q2 2026 | 76 | +11 | 109.05M | $244.73M | +11 | n/a |
| Q1 2026 | 67 | -4 | 105.51M | $217.82M | +8 | −12 |
| Q4 2025 | 71 | 0 | 109.43M | $311.01M | +1 | −1 |
| Q3 2025 | 16 | +1 | 125.31M | $476.18M | +2 | −1 |
| Q2 2025 | 12 | +1 | 21.73M | $87.13M | +1 | n/a |
| Q1 2025 | 8 | -1 | 5.77M | $22.63M | +1 | −2 |
| Q4 2024 | 9 | +1 | 5.38M | $22.37M | +1 | n/a |
| Q3 2024 | 7 | -2 | 3.35M | $10.90M | n/a | −2 |
| Q2 2024 | 9 | n/a | 3.74M | $12.31M | n/a | n/a |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Geode Capital Management ✦ (passive) | 2.13M | +1.8% | $8.37M | 0.0% | ▲ Add | 4 | SEC ↗ ×2 |
| 2 | State Street Global Advisors ✦ (passive) | 2.00M | +0.8% | $7.85M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 3 | Arrowstreet Capital ✦ | 556.32K | -5.7% | $2.18M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 4 | D. E. Shaw & Co. ✦ | 416.69K | -11.2% | $1.63M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 5 | Millennium Management ✦ | 245.10K | +2040.0% | $960,788 | 0.0% | ▲ Add | 4 | SEC ↗ |
| 6 | AQR Capital Management ✦ | 205.29K | New | $804,725 | 0.0% | New | 1 | SEC ↗ ×5 |
| 7 | Renaissance Technologies ✦ | 144.81K | +927.0% | $567,663 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 8 | T. Rowe Price ✦ | 67.33K | +7.6% | $264,000 | 0.0% | ▲ Add | 4 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| AQR Capital Management | $804,725 | 0.0% |
Exited
| Citadel Advisors | $550,285 | was 0.0% |
| Two Sigma Investments | $60,266 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 148 holders, 77.21M shares, $155.98M 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.