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 | 1,143,775 | $7.9M | 2.11% |
| D. E. Shaw & Co., Inc. | 1,036,044 | $7.2M | 1.91% |
| AQR CAPITAL MANAGEMENT LLC | 544,869 | $3.8M | 1% |
| Point72 Asset Management, L.P. | 453,011 | $3.1M | 0.84% |
| RENAISSANCE TECHNOLOGIES LLC | 131,300 | $908,596 | 0.24% |
| TWO SIGMA INVESTMENTS, LP | 42,325 | $292,889 | 0.08% |
| CITADEL ADVISORS LLC | 15,000 | $103,800 | 0.03% |
% 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.