Position
Fidelity in Upstream Bio, Inc.
Back to the book · All holders of UPB
Estimated mark uses implied 13F prices (value ÷ shares). Adds are treated as happening at this quarter’s mark; cuts at last quarter’s. Share jumps can be splits, not buys. This is not realized P&L.
Latest estimated mark −$16.9M$9.00 → $6.92
| Quarter | Shares | Value | Implied px | Est. mark | Flow | Weight |
|---|---|---|---|---|---|---|
| Q4 2025 | 7.52M | $204.1M | — | — | — | 0.0% |
| Q1 2026 | 8.1M | $72.9M | $9.00 | −$136.5M | $5.25M | 0.0% |
| Q2 2026 | 8.16M | $56.5M | $6.92 | −$16.9M | $424.4K | 0.0% |