CSTL Option Chain
Castle Biosciences, Inc.
$33.11
+$0.23(+0.70%)
57
Overall
60
Value
54
Tech
57
Quality
Market Cap
$1.01B
Volume
243.17K
52W Range
$17.72 - $44.28
Target Price
$45.11
Castle Biosciences, Inc. (CSTL) Options Chain Summary
CSTL option chain: Castle Biosciences, Inc. has 4 listed option expirations and 96 contracts. In the latest session, traders exchanged 0 calls and 0 puts, a put/call volume ratio of N/A. Open interest stands at 391 calls and 86 puts. Max pain for the nearest expiration, Oct 16, 2026, is $20.00, 39.7% below the last close of $33.17.
- Expirations
- 4
- Contracts
- 96
- Call volume
- 0
- Put volume
- 0
- Put/call ratio (volume)
- N/A
- Call open interest
- 391
- Put open interest
- 86
- Put/call ratio (OI)
- 0.22
CSTL Options Volume, Open Interest and Max Pain by Expiration
| Expiration | Call Volume | Put Volume | Call OI | Put OI | Put/Call OI | Max Pain |
|---|---|---|---|---|---|---|
| Oct 16, 2026 | 0 | 0 | 319 | 43 | 0.13 | $20.00 |
| Nov 20, 2026 | 0 | 0 | 4 | 0 | 0.00 | $17.50 |
| Jan 15, 2027 | 0 | 0 | 62 | 17 | 0.27 | $25.00 |
| Apr 16, 2027 | 0 | 0 | 6 | 26 | 4.33 | $35.00 |
End-of-day options data. Max pain is the expiration price at which open calls and puts would pay out the least in total.
| A | B | C | D | |
|---|---|---|---|---|
| 1 | Symbol | Price | Change | Vol |
| 2 | CSTL | $33.11 | +0.7% | 243.17K |
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