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. | 1,790,375 | $4.2M | 1% |
| AQR CAPITAL MANAGEMENT LLC | 1,409,795 | $3.3M | 0.79% |
| CITADEL ADVISORS LLC | 1,268,900 | $3.0M | 0.71% |
| MILLENNIUM MANAGEMENT LLC | 698,458 | $1.6M | 0.39% |
| TWO SIGMA INVESTMENTS, LP | 102,187 | $239,118 | 0.06% |
% 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.