Upstream Bio shares owned by Boxer Capital Management
Quarter-by-quarter ownership of Upstream Bio (UPB) shares owned by Boxer Capital Management
from 13F filings
Historical chart of Boxer Capital Management investment in Upstream Bio
Tip: Access up to 7 years of quarterly data
All positions including Upstream Bio held by Boxer Capital Management consolidated in one spreadsheet with up to 7 years of data
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Quarterly reported holdings in Upstream Bio by Boxer Capital Management
| Quarter filed | Position value | Share count | Share price at filing |
|---|---|---|---|
| 2026-06-30 | $1.0M | 150k | 6.92 |
| 2026-03-31 | $1.4M | 150k | 9.00 |
| 2025-12-31 | $4.1M | 150k | 27.15 |