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CSTL
Castle Biosciences, Inc. - Common stock — live penny stock scanner data, RVOL, VWAP, and vibe signals.
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Reading today's tape on CSTL…
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About Castle Biosciences, Inc. - Common stock (CSTL)
Castle Biosciences Inc is a molecular diagnostics company. The group provides test solutions for the diagnosis and treatment of dermatologic cancers, Barrett's esophagus (BE), and uveal melanoma. The product portfolio of the company includes DecisionDx-Melanoma, a risk stratification gene expression profile (GEP) test; DecisionDx-SCC, a risk stratification test for cutaneous squamous cell carcinoma; MyPath Melanoma, a diagnostic GEP test for use in patients with difficult-to-diagnose melanocytic lesions; and TissueCypher, a test to predict future development of progression of high-grade dysplasia and/or esophageal cancer. The company derives revenues through the delivery of test reports for its molecular diagnostic tests.
CSTL trades on NASDAQ and is tracked by the PennyStock.Ninja real-time scanner. The scanner monitors CSTL for premarket gaps, unusual relative volume (RVOL), VWAP reclaims and rejections, and vibe signals such as the Surfer breakout, Ninja stealth accumulation, and Fade caution patterns. Biotech and healthcare names like this one are highly catalyst-driven — FDA decisions, clinical trial results, and PDUFA dates can move the stock 50-200% in a single session, so position sizing and stop discipline matter more here than in any other sector.
What to watch on CSTL
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Frequently asked questions about CSTL
Why is CSTL moving today?
CSTL (Castle Biosciences, Inc. - Common stock) moves on relative volume (RVOL), VWAP behavior, sector rotation, and catalysts like earnings, FDA decisions, contract wins, or unusual options flow. See the live "Why is CSTL moving today?" panel above for an auto-generated read on today's tape, and the news section for current headlines.
Is CSTL a good penny stock to buy?
PennyStock.Ninja does not give buy or sell recommendations on CSTL. We give you the data — live RVOL, VWAP, float, short interest, analyst consensus, and vibe signals — so you can make your own decision. Always do your own research and never risk more than you can afford to lose.
What is CSTL's RVOL and why does it matter?
RVOL compares CSTL's current volume to its 30-day average. RVOL above 3× often signals a real catalyst — but watch the price action. High RVOL with the stock dumping below VWAP is distribution, not opportunity.
When does CSTL report earnings?
Earnings dates for CSTL are tracked in the PennyStock.Ninja scanner. See the "Upcoming Catalysts" panel above for the scanner's current estimate. Castle Biosciences, Inc. - Common stock typically reports quarterly; check the company's investor relations page for the next confirmed date.
What is CSTL's float and short interest?
CSTL float is shown in the "Short Interest & Float" panel above. Low-float names (under 75M shares) with elevated short interest can squeeze violently — always check both before sizing into a momentum trade. Live short interest, days-to-cover, and the Ninja Squeeze Score are members-only.
How can I get alerts on CSTL?
Sign up for a free 7-day PennyStock.Ninja trial (no credit card required) to set real-time alerts on CSTL for premarket gaps, RVOL spikes, VWAP reclaims, halts, and Ninja vibe signals.
Glossary quick reference
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