CSTL
Castle Biosciences Inc
NASDAQ: CSTL · HEALTHCARE · DIAGNOSTICS & RESEARCH
$24.49
+1.03% today
Updated 2026-04-30
Market cap
$734.37M
P/E ratio
—
P/S ratio
2.13x
EPS (TTM)
$-0.83
Dividend yield
—
52W range
$15 – $44
Volume
0.4M
Castle Biosciences Inc (CSTL) Earnings
Quarterly earnings history, analyst estimates, and stock price reaction.
EPS beat streak
7 of 8
Last 8 quarters
Avg EPS surprise
+25.1%
Last 4 quarters
Revenue YoY growth
+0.8%
Most recent quarter
EPS YoY growth
-125.0%
Most recent quarter
Earnings surprise history (last 12 quarters)
Beat estimate Missed estimate
Quarterly EPS and revenue trend
Quarterly revenue EPS (diluted)
How the stock reacts to earnings
Avg 1-day reaction
+19.6%
Last 3 reports
Positive reaction rate
67%
2 of 3 quarters
Largest single-day move
+38.9%
2025-08-04
| Report date | EPS actual | Surprise | Close before | Close after | 1-day reaction |
|---|---|---|---|---|---|
| 2026-02-26 | $-0.08 | +75.0% | $30.83 | $29.57 | -4.1% |
| 2025-11-03 | $-0.02 | +96.2% | $25.50 | $31.63 | +24.0% |
| 2025-08-04 | $0.15 | +129.4% | $14.65 | $20.35 | +38.9% |
Quarterly earnings history
| Fiscal quarter ending | EPS estimate | EPS actual | Surprise | Revenue | YoY revenue |
|---|---|---|---|---|---|
| 2025-12-31 | $-0.32 | $-0.08 | +75.0% | $87.01M | +0.8% |
| 2025-09-30 | $-0.52 | $-0.02 | +96.2% | $83.04M | -3.2% |
| 2025-06-30 | $-0.51 | $0.15 | +129.4% | $86.19M | -0.9% |
| 2025-03-31 | $-0.07 | $-0.90 | -1275.2% | $87.99M | +20.6% |
| 2024-12-31 | $0.04 | $0.32 | +700.0% | $86.31M | +30.5% |
| 2024-09-30 | $-0.06 | $0.08 | +233.3% | $85.78M | +39.5% |
| 2024-06-30 | $-0.27 | $0.31 | +214.8% | $87.00M | +73.5% |
| 2024-03-31 | $-0.33 | $-0.09 | +72.7% | $72.97M | — |
| 2023-12-31 | $-0.54 | $-0.10 | +81.5% | $66.12M | — |
| 2023-09-30 | $-0.76 | $-0.26 | +65.8% | $61.49M | — |
| 2023-06-30 | $-0.91 | $-0.70 | +23.1% | $50.14M | — |
Frequently asked questions
Has Castle Biosciences Inc beaten earnings estimates?
Castle Biosciences Inc has beaten Wall Street EPS estimates in 7 of its last 8 quarterly reports, with an average EPS surprise of +25.1% over the last 4 quarters.
How does CSTL stock react to earnings?
CSTL stock has moved an average of +19.6% in the trading day following earnings over its last 3 reports, with positive reactions in 67% of those quarters.
What is Castle Biosciences Inc's revenue growth rate?
Castle Biosciences Inc reported year-over-year revenue growth of +0.8% in its most recent quarter, with EPS growing -125.0% year-over-year.