30.33 USD
↘ 0.14 (0.46%)PRE MARKET (AS OF 04:40 AM EDT)
CSTL Stock Premarket
Castle Biosciences, Inc. Common Stock
CSTLNASDAQ • USD
Market: OPEN
Premarket trading runs 4:00 AM – 9:30 AM ET.
CSTL is trading at $30.33 in premarket, down $0.14 (0.46%) from its previous close of $30.47.
📅 CSTL reported earnings on Aug 3, 2026 after the close, with an estimated EPS of $-0.44. CSTL earnings details →
CSTL Premarket Chart
CSTL Premarket News
Gap Analytics — 5-year history, 5% minimum gap
No qualifying gap events found for CSTL.
Frequently Asked Questions
What is CSTL's premarket price?
Castle Biosciences (CSTL) is trading at $30.33 in premarket, down $0.14 (0.46%) from the previous close of $30.47.
Why is CSTL moving in premarket?
Castle Biosciences (CSTL) is down 0.46% from its previous close in premarket trading. Premarket moves are usually driven by company-specific news, earnings results, analyst rating or price-target changes, or broad market and sector sentiment. Check the latest CSTL premarket headlines and gap history below for the likely catalyst.
When does CSTL premarket trading start?
Premarket trading for CSTL on the NASDAQ runs from 4:00 AM to 9:30 AM Eastern Time, ahead of the regular session (9:30 AM – 4:00 PM ET). After-hours runs from 4:00 PM to 8:00 PM ET.
When does CSTL report earnings?
CSTL reported earnings on Aug 3, 2026 after the close, with an estimated EPS of $-0.44.