SPRO Earnings Reaction History
Spero Therapeutics, Inc.
EPS, Revenue, Stock Move
SPRO stock falls 2.7% on average on the first trading day after earnings.
When SPRO delivers a double beat, the stock falls 3.5% on average on the first trading day.
Across 36 releases, SPRO has delivered a positive next-day return 27.8% of the time.
Reaction Snapshot (Avg Day 1-3)
Day 1
-2.68%
Day 2
+0.38%
Day 3
-0.44%
Conditioned Moves (Day 1 Basis)
Double Beat
-3.45%
Mixed
-1.60%
Double Miss
-5.08%
EPS Beat Rate
63.9%
Revenue Beat Rate
30.6%
Positive Rate
27.8%
Both Beat Rate
16.7%
Recent Earnings History
| Date | EPS | Revenue | Day 1 | Day 2 | Day 3 | Detail |
|---|---|---|---|---|---|---|
| 2026-08-12 | Beat+5.88% | — | +4.20% | -0.81% | -3.25% | Open |
| 2026-05-13 | Beat+27.78% | Miss±0.00% | +13.11% | +1.09% | -7.53% | Open |
| 2026-03-26 | Beat+365.00% | Beat+58.83% | -1.69% | -3.86% | +4.46% | Open |
| 2025-11-13 | Beat+48.00% | Miss-74.60% | -1.23% | +0.83% | +1.65% | Open |
| 2025-08-12 | Beat+92.11% | Beat+7.29% | -17.80% | +2.06% | -3.54% | Open |
| 2025-05-13 | Beat+54.55% | Miss-46.60% | -5.78% | +0.17% | -0.03% | Open |
| 2025-03-27 | Miss-8.57% | Beat+50.90% | -10.88% | -6.07% | -3.61% | Open |
| 2024-11-14 | Miss-18.52% | Beat+225.86% | -5.60% | -3.39% | +1.75% | Open |
FAQ
How much does SPRO usually move after earnings?
SPRO moves about 2.7% on average on the first trading day after earnings. Net average direction is -2.68%.
What is SPRO's biggest post-earnings gain?
SPRO's largest recorded next-day earnings gain is +13.11%, on 2026-05-13.