Castle Biosciences Inc. (CSTL)
NASDAQ: CSTL
· Real-Time Price · USD
22.72
0.49 (2.20%)
At close: Oct 03, 2025, 3:59 PM
22.72
0.00%
After-hours: Oct 03, 2025, 04:10 PM EDT
CSTL Gamma Exposure By Expiry
The total Gamma Exposure (GEX) for CSTL across all expirations is 2,295.7 shares per 1% move, with 2,467.37 from calls and 171.67 from puts. The put-call GEX ratio of 0.07 shows call-heavy positioning, potentially creating volatility as market makers hedge by selling into strength and buying weakness.
CSTL GEX Table
| Expiry Date | Call GEX | Put GEX | Net GEX | P/C GEX |
|---|---|---|---|---|
| Oct 17, 25 | 1,877.43 | -151.43 | 1,726 | 0.08 |
| Nov 21, 25 | 0 | 0 | 0 | n/a |
| Dec 19, 25 | 0 | 0 | 0 | n/a |
| Jan 16, 26 | 140.38 | -14.15 | 126.23 | 0.10 |
| Apr 17, 26 | 449.56 | -6.09 | 443.47 | 0.01 |