CSTL · Expected Move
Castle Biosciences, Inc. Common Stock
The expected move for CSTL is derived from at-the-money straddle pricing — the market's implied one-standard-deviation move through the next 30 days. Comparing it to realized moves reveals when options are pricing in too much (premium-selling regime) vs too little (premium-buying regime).
CSTL straddle price & implied vol
59 sessionsBars: at-the-money straddle price (30-day and 7-day) — the market's priced move. Line: average implied volatility (right axis).
Current CSTL Expected Move
30-Day Straddle
$2.70
7-Day Straddle
$2.70
Avg IV
154.1%
IV Rank
58%
Implied one-standard-deviation move through the next 30 days. Compare to CSTL's realized
move over the same window to gauge whether options are pricing in too much (premium-selling regime)
or too little (premium-buying regime). The
Expected Move Tracker ranks every symbol by
this measure.
CSTL Straddle Price — Last 60 Days
| Date | 30D Straddle | 7D Straddle | Avg IV | IV Rank |
|---|---|---|---|---|
| 20261002 | $2.70 | $2.70 | 154.1% | 58% |
| 20261001 | $3.12 | $3.12 | 211.8% | 100% |
| 20260930 | $3.15 | $3.15 | 146.0% | 56% |
| 20260929 | $3.58 | $3.58 | 201.6% | 100% |
| 20260928 | $3.30 | $3.30 | 135.8% | 51% |
| 20260925 | $3.67 | $3.67 | 135.0% | 50% |
| 20260924 | $4.05 | $4.05 | 105.8% | 26% |
| 20260923 | $3.62 | $3.62 | 128.4% | 45% |
| 20260922 | $3.75 | $3.75 | 159.5% | 70% |
| 20260921 | $3.73 | $3.73 | 116.7% | 35% |
| 20260918 | $3.95 | $1.90 | 155.7% | 67% |
| 20260917 | $4.45 | $2.30 | 118.1% | 36% |
| 20260916 | $4.00 | $2.25 | 120.7% | 38% |
| 20260915 | $4.12 | $2.15 | 107.6% | 27% |
| 20260914 | $4.95 | $3.23 | 88.7% | 12% |
| 20260911 | $5.08 | $3.48 | 102.9% | 24% |
| 20260910 | $4.65 | $3.02 | 100.1% | 21% |
| 20260909 | $5.60 | $4.07 | 130.5% | 46% |
| 20260908 | $4.95 | $3.75 | 94.1% | 16% |
| 20260904 | $5.53 | $4.22 | 111.2% | 30% |
| 20260903 | $5.45 | $3.77 | 112.2% | 31% |
| 20260902 | $2.95 | $2.95 | 155.4% | 67% |
| 20260901 | $3.68 | $3.68 | 141.5% | 56% |
| 20260831 | $3.88 | $3.88 | 138.8% | 53% |
| 20260828 | $3.55 | $3.55 | 132.8% | 48% |
| 20260827 | $4.30 | $4.30 | 116.5% | 35% |
| 20260826 | $4.40 | $4.40 | 123.3% | 40% |
| 20260825 | $4.00 | $4.00 | 121.2% | 39% |
| 20260824 | $3.78 | $3.78 | 131.4% | 47% |
| 20260821 | $4.65 | $1.90 | 116.8% | 35% |
| 20260820 | $4.30 | $2.55 | 101.7% | 23% |
| 20260819 | $5.20 | $2.38 | 111.4% | 31% |
| 20260818 | $4.90 | $2.02 | 108.6% | 28% |
| 20260817 | $4.15 | $1.85 | 103.6% | 24% |
| 20260814 | $4.42 | $2.58 | 113.6% | 32% |
| 20260813 | $4.42 | $2.55 | 115.9% | 34% |
| 20260812 | $4.85 | $3.02 | 104.7% | 25% |
| 20260811 | $5.22 | $3.95 | 102.2% | 23% |
| 20260810 | $5.12 | $3.42 | 106.5% | 27% |
| 20260806 | $4.70 | $2.62 | 108.1% | 28% |
| 20260805 | $3.00 | $3.00 | 143.4% | 57% |
| 20260804 | $3.00 | $3.00 | 116.8% | 35% |
| 20260803 | $3.78 | $3.78 | 122.7% | 40% |
| 20260731 | $4.55 | $4.55 | 121.0% | 39% |
| 20260730 | $5.28 | $5.28 | 108.1% | 28% |
| 20260729 | $4.50 | $4.50 | 116.7% | 35% |
| 20260728 | $4.25 | $4.25 | 106.0% | 26% |
| 20260727 | $3.88 | $3.88 | 103.1% | 24% |
| 20260724 | $4.67 | $4.67 | 107.2% | 27% |
| 20260723 | $4.32 | $4.32 | 91.3% | 14% |
| 20260722 | $4.20 | $4.20 | 80.8% | 5% |
| 20260721 | $4.15 | $4.15 | 95.2% | 17% |
| 20260720 | $4.28 | $4.28 | 91.2% | 14% |
| 20260716 | $5.12 | $1.27 | 78.5% | 3% |
| 20260715 | $5.40 | $1.55 | 78.4% | 3% |
| 20260714 | $4.47 | $1.18 | 74.4% | 0% |
| 20260713 | $4.47 | $2.00 | 85.1% | 7% |
| 20260710 | $4.43 | $2.23 | 85.3% | 7% |
| 20260709 | $5.53 | $1.88 | 76.4% | 0% |
More on CSTL
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.