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CSTL
Castle Biosciences, Inc. Common Stock
stock NASDAQ

At Close
Aug 5, 2026 3:59:56 PM EDT
30.40USD-2.502%(-0.78)520,194
26.29Bid   36.31Ask   10.02Spread
Pre-market
0.00USD-100.000%(-30.39)0
After-hours
Aug 4, 2026 4:00:30 PM EDT
31.18USD0.000%(0.00)0
OverviewOption ChainMax PainOptionsHistoricalExchange VolumeDark Pool LevelsDark Pool PrintsExchangesShort VolumeShort Interest - DailyShort InterestBorrow Fee (CTB)Failure to Deliver (FTD)ShortsTrendsNewsMore
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Market Cap
926.87M
Industry
Diagnostics & Research
CSTL Stats
Avg. Vol. 10 Day
617,981
Avg. Vol. 30 Day
429,204
Employees
542
Market Cap
926,872,042
Shares Out.
30,549,507
On/Off Exchange
63%/37%
6 Month Beta
1.18
1 Year Beta
0.90
2 Year Beta
0.85
3 Year Beta
1.02
52 Week Low
17.72
52 Week High
44.28
SMA50
23.09
SMA200
28.95
1 Week
+24.04%
1 Month
+25.32%
3 Month
+23.33%
6 Month
-6.36%
1 Year
+49.09%
2 Year
+38.86%
5 Year
-58.96%
Profile
castle biosciences, inc. specializes in diagnostic tests for cancers. founded in 2008, the company goal has been to help advance the care for cancers through objective testing. our team works with outstanding members of the oncology community throughout the discovery, development and utilization of these tests. currently, castle biosciences has tests to help doctors treat cutaneous melanoma, uveal melanoma, esophageal adenocarcinoma, mesothelioma and glioma. we have active research programs in rectal cancer and soft tissue sarcoma, and anticipate tests for these and other under-served cancers to be available in the near future please visit us at www.castlebiosciences.com for more information on our company and products.

CSTL Stock Summary

Castle Biosciences, Inc. Common Stock (NASDAQ:CSTL) stock price today is $30.40, and today's volume is 520,194. CSTL is down -2.502% today. The 30 day average volume is 429,204. CSTL market cap is 926.87M with 30,549,507 shares outstanding.



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