Castle Biosciences, Inc.
CSTL
NASDAQ·Healthcare·Medical - Diagnostics & Research·Mkt cap $1.0B
$32.91
▲ +0.80%
P/E
-50.11
Mkt Cap
$1.0B
52-Wk Range
$17.72–$44.28
52-Week Range
$17.72 - $44.28
P/E
Fwd P/E
Beta
Div Yield
Avg Vol
Shares Out
Mkt Cap
Price action
Price chart
Up 36.8% over the trailing year
Total returns
Price performance
Total return across standard periods - splits & dividends adjusted by FMP. Periods longer than 1Y show annualized in the tooltip.
Why we rate it this way
The thesis at a glance
Bull and bear case · plain-English context across the five lenses we evaluate.
Bull Case
5 reasons
- Proprietary multi-gene expression profiling technology with clinical validation
- Comprehensive test portfolio covering multiple dermatological cancers
- Strong physician relationships and integrated diagnostic workflow
- Established reimbursement pathways and payer coverage
- First-mover advantage in precision diagnostics for skin cancer
Bear Case
1 risk
- Average volatility.
Growth
Stable outlook
Rising incidence of melanoma and non-melanoma skin cancers globally
Value
Deep value opportunity - significant discount to Life Sciences Tools peers
Momentum
Hot
+56.6% over 3m
Quality
Excellent
Strong fundamentals
Dividend
None
No dividend
Smart-money signal
Who's buying CSTL right now
Insider Form 4s, 13F institutional filings, and Congressional disclosures - at a glance.
Earnings track record
Latest print - beat on both lines
AI-summarized recap of last quarter, plus the surprise on every print.
Next: Nov 2, 2026
JUL 30, 2026
Reported EPS of -$0.07 vs -$0.41 consensus (+82.8% surprise). Revenue of $103.5M vs $86.2M expected (+20.1%). Beat on both top and bottom lines.
EPS surprise · last 4Q
1 of 1 beats
Estimate
Actual
Q3 26
+82.8%
Revenue trend · last 8Q
—
+31%
+21%
-1%
-3%
+1%
-5%
+20%
Q3 24
Q4 24
Q1 25
Q2 25
Q3 25
Q4 25
Q1 26
Q2 26
$85.8M
$86.3M
$88.0M
$86.2M
$83.0M
$87.0M
$83.7M
$103.5M
Margins · last 8Q
Gross
0.0%
Operating
0.0%
Profit
-2.0%
Wall Street consensus
4 analysts · 100% Buy
Live ratings and price targets aggregated across covering analysts.
Buy
100%
Hold
0%
Sell
0%
Median Price Target
—
Latest: BTIG · Aug 3, 2026
vs Industry
How CSTL stacks vs Medical - Diagnostics & Research
Stock metrics vs industry averages. Green = better than industry.
Industry comparison data unavailable for this stock.
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