Stock ownership
Upstream Bio Inc - US
- Ticker
- UPB
- CUSIP
- 91678A107
- Held by
- 1 fund
- Combined value
- $237,708
+% bought more, −% sold down — each fund's last-quarter move (change in share count).
| Fund | Quarter | Last quarter | Value | % of fund |
|---|---|---|---|---|
| Tudor Investment Corp position history | Q1 2026 | NEW | $237,708 | 0.0% |