UPB Earnings Reaction History
Upstream Bio, Inc.
EPS, Revenue, Stock Move
UPB stock rises 0.4% on average on the first trading day after earnings.
When UPB delivers a double beat, the stock falls 1.5% on average on the first trading day.
Across 7 releases, UPB has delivered a positive next-day return 57.1% of the time.
Reaction Snapshot (Avg Day 1-3)
Day 1
+0.45%
Day 2
-3.60%
Day 3
+1.16%
Conditioned Moves (Day 1 Basis)
Double Beat
-1.47%
Mixed
+1.88%
Double Miss
—
EPS Beat Rate
42.9%
Revenue Beat Rate
100.0%
Positive Rate
57.1%
Both Beat Rate
42.9%
Recent Earnings History
| Date | EPS | Revenue | Day 1 | Day 2 | Day 3 | Detail |
|---|---|---|---|---|---|---|
| 2026-08-11 | Beat+6.41% | Beat+37.70% | -4.70% | -2.54% | ±0.00% | Open |
| 2026-05-13 | Beat+6.25% | Beat+0.62% | +4.58% | -6.09% | +3.41% | Open |
| 2026-03-26 | Miss-8.22% | Beat+14.38% | +3.38% | -11.44% | +1.27% | Open |
| 2025-11-05 | Beat+19.23% | Beat+30.95% | -4.27% | -1.29% | -2.96% | Open |
| 2025-08-06 | Miss-21.31% | Beat+195.58% | +7.87% | -5.26% | +1.01% | Open |
| 2025-05-06 | Miss-4.08% | Beat+78.55% | -5.41% | +4.51% | +3.03% | Open |
| 2024-11-07 | Miss-1100.00% | Beat+52.80% | +1.69% | -3.11% | +2.37% | Open |
FAQ
How much does UPB usually move after earnings?
UPB moves about 0.4% on average on the first trading day after earnings. Net average direction is +0.45%.
What is UPB's biggest post-earnings gain?
UPB's largest recorded next-day earnings gain is +7.87%, on 2025-08-06.