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CB

Castle Biosciences, Inc. (CSTL)

NASDAQ • Healthcare

$33.29
+$0.21 (+0.7%)
Market closed

Last close at October 26, 2026 at 20:00 UTC

Open$33.2
Day Range$32.84 - $33.78
Avg. Volume (3M)335.9K
Market Cap$1B
52 Week Range
$17.72$44.28
Next EarningsIn 9 daysNov 5, 2026

Metrics Over Time

Where the Money Goes

Q2 2026
Revenueeverything earned$103.5M100%
Gross Profitminus cost of goods$79.8M77%

In plain terms: out of every $100 in revenue, Castle Biosciences, Inc. currently loses $2.

Fundamentals & Financials

Revenue (TTM)
$357.2M
Net Income (TTM)
-$19.4M
EPS (TTM)
-$0.66
ROA (TTM)
-3.46%
Current Ratio
6.04

TTM is calculated as the sum of the four most recently completed quarters. This is a standard approach when monthly or real-time data is not available.

Earnings

+65.2%Q1 2026-$0.08
0.0%Q2 2026-$0.49
+82.8%Q3 2026-$0.07
Next

Nov 5

in 9 daysQ4 2026

% — EPS deviation from the forecast (beat / miss); quarters without a forecast show the reported EPS

Latest report — Q3 2026
Beat +82.8%

Castle Biosciences beat expectations in the second fiscal quarter of 2026, with revenue and EPS both topping consensus when results were reported July 30, 2026. Revenue rose 20.1% to about $103.5 million, and in the consensus comparison it topped expectations at $103.5 million versus the $86.2 million estimate, +20.1%, up from about $86.2 million a year ago. EPS of -$0.07 topped the -$0.41 estimate by $0.34, swinging from $0.15 a year ago. Profitability stayed high at the gross line with gross margin at roughly 77%, while operating margin was about -3% as the company posted an operating loss of roughly $3.1 million; net income was a loss of about $2.1 million versus about $4.5 million a year ago. The quarter generated operating cash flow of around $15.2 million. For the next period, consensus calls for EPS of -$0.38 on revenue of $92.1 million.

Next report — what to expect

Castle Biosciences, Inc. (CSTL) reports earnings on November 2, 2026. The next-period consensus calls for EPS of -$0.38 on revenue of $92.3 million. Revenue grew +20.1% year over year last quarter (trailing). CSTL has beaten EPS in 6 of 8 most recent quarters.

View full earnings history

About Castle Biosciences, Inc.

Castle Biosciences, Inc. trades on the NASDAQ as CSTL and operates in cancer diagnostics, with a focus on molecular tests for dermatological cancers. The company generated $344.2 million of revenue in FY2025 from commercial-stage testing services sold to healthcare providers, alongside its diagnostic and prognostic assays.

Name
Castle Biosciences, Inc.
CEO
Derek J. Maetzold
Website
castlebiosciences.com
Industry
Healthcare
Year Founded
2007
Employees
1,002

Today's Snapshot

AI-generated

CSTL ended yesterday 0.7% up at 33.30.

Trading Volume

Below 10d avg (297.9K)

235.8K

vs S&P 500 Today

Inline with Market

-0.03%

Updated: October 27, 2026 at 12:15 UTC

Technical Indicators

3 Buy2 Neutral3 Sell
CSTL’s readings are mixed but tilt toward a cautious sell stance as medium-term moving averages sit above the current price while longer-term averages suggest higher support levels, producing a conflicted trend profile. Momentum is soft with MACD in negative territory and short indicators around neutral, while ADX implies a lack of strong directional conviction. Volatility is moderate and the stock is trading near its pivot, and although OBV is positive, it hasn’t translated into clear price strength. Technical takeaway: Sell.
All signals
  • EMA (5 indicators)$30.98 - $33.57
    Buy
  • RSI (14)48.64
    Neutral
  • Stochastic %K (14, 3, 3)33.27
    Neutral
  • MACD Level (12, 26)-0.19
    Sell

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