Castle Biosciences Inc. (CSTL) Options Analysis - Options Chain, Volume & Implied Volatility - Stocknear
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    Castle Biosciences Inc.

    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 Option Overview

    Overview for all option chains of CSTL. As of October 05, 2025, CSTL options have an IV of 180.11% and an IV rank of 123.25%. The volume is 207 contracts, which is 559.46% of average daily volume of 37 contracts. The volume put-call ratio is 0.02, indicating a bullish sentiment in the market.

    Implied Volatility

    Implied Volatility (30d)
    180.11%
    IV Rank
    100%
    Historical Volatility
    52.36%
    IV Low
    59.91% on Jan 28, 2025
    IV High
    157.43% on Sep 22, 2025

    Open Interest (OI)

    Today's Open Interest
    1,825
    Put-Call Ratio
    0.1
    Put Open Interest
    161
    Call Open Interest
    1,664
    Open Interest Avg (30-day)
    1,807
    Today vs Open Interest Avg (30-day)
    101%

    Option Volume

    Today's Volume
    207
    Put-Call Ratio
    0.02
    Put Volume
    4
    Call Volume
    203
    Volume Avg (30-day)
    37
    Today vs Volume Avg (30-day)
    559.46%

    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
    Oct 17, 2025 2 0 0 1,011 130 0.13 180.11% 17.5
    Nov 21, 2025 0 0 0 0 0 0 82.7% 12.5
    Dec 19, 2025 0 0 0 0 0 0 27.6% 350
    Jan 16, 2026 0 4 0 134 25 0.19 67.55% 15
    Apr 17, 2026 201 0 0 519 6 0.01 57.77% 22.5

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