CS
CSTL
Castle Biosciences, Inc. $32.33 1M +2.9% 3M +53.9% YTD -16.1% as of 2026-09-11↑↓ next ticker · ⌘+↑↓ or scroll to zoom · ←→ pan · 0 reset
▲ buy ▼ sell · size ≈ trade size · earnings ● beat ● miss · ring ◯ before open ◯ after close · ─ moving averages · click the buttons above to hide them
Model view — historical tendencies for the days ahead, not a forecast
Next 1 day
+0.3%
Next 1 week
+0.5%
Next 1 month
-0.4%
Mean reversion
Oversold — RSI(2) at 18
RSI(2) under 15 is oversold (this name has historically bounced); over 85 is overbought.
Its dip-buy edge in history is -0.16%/day.
Mean-reversion stats →
1-month breakdown —
Market · β 0.93 -0.2% · Seasonal tilt (6y) -0.2%
$11M/day volume
56% volatility
+41% 1-year
-70% from ATH
52-week range · 55% of the way up · -27% from the high
$17.72$44.28
Congressional trades in CSTL Full tracker →
2 members · 2 buys / 1 sells · $3K–$45K disclosed · latest filing Apr 17, 2022.
| SELL | $1K–$15K | |
| BUY | $1K–$15K | |
| BUY | $1K–$15K |
Earnings Full history →
Next report 2026-11-02 (Monday, after close, in 49 days) · EPS est. -0.36.
1-day std dev
12.9%
Finished up
48%
Biggest pop
+32.8%
Biggest drop
-26.0%
Standard deviation of the close-to-close move over the last 29 reports. History, not a forecast.
Data from the U.S. House Clerk and FINRA, plus end-of-day prices. Not investment advice.