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Castle Biosciences CSTL 32.52 -1.68 -4.91%

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ATM IV
0.66
Put Call Ratio (OI)
0.903
Put Call Ratio (Vol)
18
IV Rank
36.4
IV Percentile
44.9
Max pain
30

Gamma exposure (2026-11-06)

GEX estimates dealer hedging flow at each strike.

Positive GEX = dealers are long gamma; they buy the dip and sell the rip, dampening volatility. Negative GEX = dealers are short gamma; they sell the dip and buy the rip, amplifying volatility.

DTE \text{DTE}
14.0
161.0
| Δ | |\Delta|
0.00
1.00
Moneyness Moneyness
-30.3
30.3
View values by strike
CSTL · Gamma exposure · 2026-11-06. USD of exposure per 1% underlying move.
StrikeCallsPuts
2.50 0.287 0
5.00 0.137 0
12.50 0 -8.36
15.00 9.15 -22.1
17.50 0 -16.2
20.00 0 -76.4
22.50 11.4 -114
25.00 89.9 -288
30.00 192 -59.2 K
35.00 1.9 K -178
40.00 35.4 K -71.2
45.00 544 0