Stocktoria
Ribbon Communications Inc. RBBN
Ribbon Communications Inc. institutional holders
| Investor | Shares | Value | % of company |
|---|---|---|---|
| BlackRock Finance, Inc. | 7,383,934 | $24.3M | 4.13% |
| D. E. Shaw & Co., Inc. | 1,538,472 | $3.3M | 0.86% |
| AQR CAPITAL MANAGEMENT LLC | 1,257,347 | $2.7M | 0.7% |
| CITADEL ADVISORS LLC | 592,789 | $1.3M | 0.33% |
| MILLENNIUM MANAGEMENT LLC | 491,320 | $1.0M | 0.27% |
% of company = reported institutional shares ÷ shares outstanding. Based on the latest reports; not every holder reports every quarter.
Computed from company filings · US · as of 2026-03-31. Facts plus Stocktoria's own computed scores — not investment advice.