RBBN
Ribbon Communications Inc. · Technology · Software - Application
Momentum inputs (comparable managers):
holder breadth +12.5% ·
share flow +0.7% ·
net new positions +11.1%
· 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 |
|---|---|---|---|---|---|---|
| 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) | 2.10M | -0.3% | $8.72M | 0.0% | ▼ Trim | 3 | SEC ↗ ×2 |
| 2 | State Street Global Advisors ✦ (passive) | 1.99M | n/a | $8.27M | 0.0% | n/c | 1 | SEC ↗ |
| 3 | Arrowstreet Capital ✦ | 589.76K | -14.5% | $2.45M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 4 | D. E. Shaw & Co. ✦ | 469.50K | +22.1% | $1.95M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 5 | Citadel Advisors ✦ | 132.28K | +62.8% | $550,285 | 0.0% | ▲ Add | 3 | SEC ↗ |
| 6 | T. Rowe Price ✦ | 62.60K | +8.6% | $261,000 | 0.0% | ▲ Add | 3 | SEC ↗ |
| 7 | Two Sigma Investments ✦ | 14.49K | +0.9% | $60,266 | 0.0% | ▲ Add | 3 | SEC ↗ |
| 8 | Renaissance Technologies ✦ | 14.10K | New | $58,656 | 0.0% | New | 1 | SEC ↗ |
| 9 | Millennium Management ✦ | 11.45K | -54.9% | $47,644 | 0.0% | ▼ Trim | 3 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value: the conviction measure. ✦ = curated manager.
New buyers
| Renaissance Technologies | $58,656 | 0.0% |
Exited
| No tracked exits this quarter. |
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.