Stocktoria
Upstream Bio, Inc. UPB
Nasdaq · stock · Pharmaceutical Preparations · website · IPO 2024-10-11
Upstream Bio, Inc. institutional holders
| Investor | Shares | Value | % of company |
|---|---|---|---|
| MILLENNIUM MANAGEMENT LLC | 937,323 | $8.4M | 1.73% |
| D. E. Shaw & Co., Inc. | 820,480 | $7.4M | 1.51% |
| Point72 Asset Management, L.P. | 189,668 | $1.7M | 0.35% |
| CITADEL ADVISORS LLC | 78,500 | $706,500 | 0.14% |
| AQR CAPITAL MANAGEMENT LLC | 72,171 | $649,539 | 0.13% |
| RENAISSANCE TECHNOLOGIES LLC | 62,100 | $558,900 | 0.11% |
% 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 2025-12-31. Facts plus Stocktoria's own computed scores — not investment advice.