Stocktoria
Upstream Bio, Inc. UPB
Nasdaq · XNAS · stock · Pharmaceutical Preparations · website · IPO 2024-10-11
Upstream Bio, Inc. institutional holders (13F)
| Investor | Shares | Value |
|---|---|---|
| MILLENNIUM MANAGEMENT LLC | 937,323 | $8.4M |
| D. E. Shaw & Co., Inc. | 820,480 | $7.4M |
| Point72 Asset Management, L.P. | 189,668 | $1.7M |
| CITADEL ADVISORS LLC | 78,500 | $706,500 |
| AQR CAPITAL MANAGEMENT LLC | 72,171 | $649,539 |
| RENAISSANCE TECHNOLOGIES LLC | 62,100 | $558,900 |
Source: SEC EDGAR filings · CIK 0002022626 · as of 2025-12-31. Facts from filings plus Stocktoria's own computed scores — not investment advice.