Castle Biosciences, Inc. Common Stock

CSTLNASDAQ • USD
33.99 USD
↘ 2.66 (7.26%)🟢LIVE (AS OF 12:06 PM EDT)
🟢Market: OPEN

Castle Biosciences, Inc. Common Stock (CSTL) is currently trading at $33.99. There is a divergence between signals — technical indicators rate "Buy" but underlying fundamentals lean "Sell". This is driven by a robust Altman Z-Score, a weak Piotroski F-Score of 2/9, negative Return on Equity and a bullish Golden Cross on the moving averages. Valuation metrics suggest CSTL is trading at a discount to its peers, earning an "Attractively Valued" rating.

Technical & fundamental data as of Oct 5, 2026.

Open?$36.65
High?$37.73
Low?$33.78
Prev. Close?$36.65
Volume?147.0K
Avg. Volume?351.5K
VWAP?$35.26
Rel. Volume?0.42x
Bid / Ask
Bid?$29.44 × 100
Ask?$34.30 × 100
Spread?$4.86
Midpoint?$31.87
Valuation & Ratios
Market Cap?1.1B
Shares Out?30.5M
Float?28.6M
Float %?93.5%
P/E Ratio?N/A
P/B Ratio?2.38
EPS?-$0.64
Dividend?0.00%
Ex-Dividend?N/A
News
Profile
Castle Biosciences Inc is a molecular diagnostics company. The group provides test solutions for the diagnosis and treatment of dermatologic cancers, Barrett's esophagus (BE), and uveal melanoma. The product portfolio of the company includes DecisionDx-Melanoma, a risk stratification gene expression profile (GEP) test; DecisionDx-SCC, a risk stratification test for cutaneous squamous cell carcinoma; MyPath Melanoma, a diagnostic GEP test for use in patients with difficult-to-diagnose melanocytic lesions; and TissueCypher, a test to predict future development of progression of high-grade dysplasia and/or esophageal cancer. The company derives revenues through the delivery of test reports for its molecular diagnostic tests.
Employees
1.0K
Market Cap
1.1B
Industry
SERVICES-MEDICAL LABORATORIES
Listed
2019-07-25
Address
1500 W. PARKWOOD AVE.
FRIENDSWOOD, TX 77546
Phone: 866-788-9007
Technical OutlookBuy
Strong SellNeutralStrong Buy
Long-Term (Tide)?▲ Bullish(+2/3)
Medium-Term (Wave)?– Neutral(0/3)
Short-Term (Ripple)?▲ Bullish(+1/3)
MA Alignment?Mixed
Full Technical Analysis →
Fundamental OutlookSell
Strong SellNeutralStrong Buy
F-Score?
12
Z-Score?
100
Momentum?
14
Short Sent.?
42
Piotroski F-Score?2/9Weak
Altman Z-Score?14.44Safe
Confidence?51%Low
Full Fundamental Analysis →
Short InterestHigh
Short % of Float?6.65%Elevated
Short Interest?1.9M
Days to Cover?7.4
Free Float28.6M
Avg Daily Volume257.9K
Settlement Date2026-09-15
Financial Health
Current Ratio?6.04Strong
Quick Ratio?5.85Strong
Cash Ratio?1.10Strong
Debt/Equity?0.02Low
ValuationATTRACTIVELY VALUEDvs 1 peers + S&P 500
Score
92/100
P/E?
N/A▾
P/B?
Peers
100
S&P
66
2.38CHEAP▾
P/S?
Peers
100
S&P
49
3.13FAIR▾
P/FCF?
N/A▾
EV/EBITDA?
S&P
97
-64.7CHEAP▾
EV/Sales?
Peers
100
S&P
61
2.99CHEAP▾
Returns & Efficiency
ROE?
S&P
12
-4.1%WEAK▾
ROA?
S&P
3
-3.5%WEAK▾
Cash Flow & Enterprise
FCF?$-489000
Enterprise Value?$1.1B
Fundamentals ratios updated end of day