Castle Biosciences Inc. (CSTL)
NASDAQ: CSTL
· Real-Time Price · USD
19.82
0.41 (2.11%)
At close: Aug 14, 2025, 3:59 PM
19.82
-0.03%
Pre-market: Aug 15, 2025, 08:45 AM EDT
CSTL Option Overview
Overview for all option chains of CSTL. As of August 15, 2025, CSTL options have an IV of 458.24% and an IV rank of 347.39%. The volume is 33 contracts, which is 35.11% of average daily volume of 94 contracts. The volume put-call ratio is 0.22, indicating a bullish sentiment in the market.
Implied Volatility
Implied Volatility (30d)
458.24%IV Rank
347.39%Historical Volatility
94.91%IV Low
59.91% on Jan 28, 2025IV High
174.57% on Aug 13, 2025Open Interest (OI)
Today's Open Interest
1,936Put-Call Ratio
0.36Put Open Interest
512Call Open Interest
1,424Open Interest Avg (30-day)
1,074Today vs Open Interest Avg (30-day)
180.26%Option Volume
Today's Volume
33Put-Call Ratio
0.22Put Volume
6Call Volume
27Volume Avg (30-day)
94Today vs Volume Avg (30-day)
35.11%Option Chain Statistics
This table provides a comprehensive overview of all CSTL options grouped by their expiration dates.
| Expiration | Call Vol | Put Vol | P/C Vol | Call OI | Put OI | P/C OI | Implied Volatility | Max Pain |
| Aug 15, 2025 | 27 | 2 | 0.07 | 736 | 318 | 0.43 | 458.24% | 20 |
| Sep 19, 2025 | 0 | 4 | 0 | 6 | 43 | 7.17 | 89.29% | 20 |
| Oct 17, 2025 | 0 | 0 | 0 | 634 | 129 | 0.2 | 99.83% | 17.5 |
| Dec 19, 2025 | 0 | 0 | 0 | 0 | 0 | 0 | 27.6% | 350 |
| Jan 16, 2026 | 0 | 0 | 0 | 48 | 22 | 0.46 | 54.81% | 17.5 |
| Apr 17, 2026 | 0 | 0 | 0 | 0 | 0 | 0 | 53.7% | 2.5 |