Castle Biosciences, Inc. Common Stock

CSTLNASDAQUSD
21.01 USD
0.59 (2.73%)AT CLOSE (11:59 AM EDT)
21.06
0.05 (0.24%)
POST MARKET (AS OF 04:16 PM EDT)
Post Market
AS OF 04:16 PM EDT
21.06
0.05 (0.24%)
🔴Market: CLOSED
Open?$21.57
High?$21.78
Low?$20.99
Prev. Close?$21.60
Volume?212.5K
Avg. Volume?471.8K
VWAP?$21.24
Rel. Volume?0.45x
Bid / Ask
Bid?$18.06 × 100
Ask?$24.06 × 100
Spread?$6.00
Midpoint?$21.06
Valuation & Ratios
Market Cap?637.2M
Shares Out?30.3M
Float?28.3M
Float %?93.5%
P/E Ratio?N/A
P/B Ratio?1.38
EPS?-$0.42
Dividend?0.00%
Ex-Dividend?N/A

Castle Biosciences, Inc. Common Stock (CSTL) is currently trading at $21.01. Technical and fundamental signals converge bearish — technicals rate "Sell" while fundamentals read "Sell". This is driven by a robust Altman Z-Score, a weak Piotroski F-Score of 2/9, negative Return on Equity and a bearish Death Cross on the long-term moving averages. Valuation metrics suggest CSTL is trading at a discount to its peers, earning an "Attractively Valued" rating.

Technical & fundamental data as of Jun 5, 2026.

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
942
Market Cap
637.2M
Industry
SERVICES-MEDICAL LABORATORIES
Listed
2019-07-25
Address
1500 W. PARKWOOD AVE.
FRIENDSWOOD, TX 77546
Phone: 866-788-9007
Technical OutlookSell
Strong SellNeutralStrong Buy
Long-Term (Tide)? Bearish(-2/3)
Medium-Term (Wave)? Bearish(-1/3)
Short-Term (Ripple)? Bearish(-1/3)
MA Alignment?Mixed
Full Technical Analysis →
Fundamental OutlookSell
Strong SellNeutralStrong Buy
F-Score?
12
Z-Score?
100
Momentum?
3
Short Sent.?
75
Piotroski F-Score?2/9Weak
Altman Z-Score?9.27Safe
Confidence?51%Low
Full Fundamental Analysis →
Short InterestLow
Short % of Float?5.00%Low
Short Interest?1.4M
Days to Cover?2.2
Free Float28.3M
Avg Daily Volume633.9K
Settlement Date2026-05-15
Financial Health
Current Ratio?6.75Strong
Quick Ratio?6.53Strong
Cash Ratio?1.31Strong
Debt/Equity?0.02Low
ValuationATTRACTIVELY VALUEDvs 1 peers + S&P 500
Score
87/100
P/E?
N/A
P/B?
Peers
100
S&P
90
1.38CHEAP
P/S?
Peers
100
S&P
69
1.87CHEAP
P/FCF?
Peers
100
S&P
3
141.0PRICEY
EV/EBITDA?
S&P
97
-31.8CHEAP
EV/Sales?
Peers
100
S&P
80
1.72CHEAP
Returns & Efficiency
ROE?
S&P
13
-2.8%WEAK
ROA?
S&P
3
-2.3%WEAK
Cash Flow & Enterprise
FCF?$4.5M
Enterprise Value?$583.8M
Fundamentals ratios updated end of day