Nama Insights

Castle Biosciences, Inc. (CSTL)

Healthcare · Diagnostics Research · NASDAQ

Castle Biosciences, Inc. (CSTL) is a Healthcare company in the Diagnostics Research industry. It has a market capitalization of $1.09B and a free-cash-flow yield of 2.8%. Over the most recent reported fiscal year, revenue grew 3.7% and free cash flow per share fell 21.8%. Nama's AI scorecard rates it Sell, 4.2 out of 10. On 12-month momentum it ranks in the middle band of its market.
AI scorecard
Sell · 4.2/10
Negative, at the mild end of Sell — the last band before Hold. As of Oct 4, 2026.
Momentum
Middle · +50.3% over 12 months ex. last
The middle fifth of its market on the past year's move, adjusted for its swings.
Shariah screen
Not Shariah Compliant
At least one of the three ratios or the industry test failed.
Off its high
-48.2%
How far the last close sits under the highest price of the past five years.
Market cap$1.09B
Trailing P/E—
Price / book2.3
Price / sales3.0
FCF yield2.8%
Dividend yield—
Gross margin77.3%
Operating margin-9.0%
Net margin-5.4%
Revenue growth (YoY)+3.7%
Revenue growth (3-yr annual)+35.9%
EPS growth (YoY)-237.1%
FCF/share growth (YoY)-21.8%
Beta1.0
ExchangeNASDAQ
SectorHealthcare
IndustryDiagnostics Research

CSTL earnings

Next report: Nov 2, 2026 (Q3 2026, EPS estimate -$0.35). Beat the EPS estimate in 3 of 4 recent quarters.

QuarterReportedEPSEstimateSurpriseRevenue
Q2 2026 Jul 30, 2026 -$0.07 -$0.41 +82.9% $103.55M
Q1 2026 May 6, 2026 -$0.49 -$0.49 +0.0% $83.68M
Q4 2025 Feb 26, 2026 -$0.08 -$0.26 +69.2% $87.01M
Q3 2025 Nov 3, 2025 -$0.02 -$0.51 +96.1% $83.04M

CSTL analyst price target

Median target $45.00 from 9 analysts, ranging $35.00 – $57.00.

Diagnostics Research peers

TickerCompanyMarket capP/E
TMO Thermo Fisher Scientific Inc. $242.11B 27.5
DHR Danaher Corporation $150.48B 26.4
NTRA Natera, Inc. $59.15B —
A Agilent Technologies, Inc. $47.31B 27.7
IQV IQVIA Holdings Inc. $42.50B 20.7
WAT Waters Corporation $41.75B 31.1
ILMN Illumina, Inc. $41.23B 53.0
IDXX IDEXX Laboratories, Inc. $40.84B 36.5
Explore live CSTL data on Nama Insights →

CSTL FAQ

Is CSTL a buy?
Nama's AI scorecard currently rates Castle Biosciences, Inc. Sell (4.2 out of 10), a call computed from its profitability, cash generation, growth, valuation and balance sheet. It is a research reading, not investment advice.
When does CSTL report earnings?
Castle Biosciences, Inc.'s next scheduled report is on Nov 2, 2026. Analysts expect EPS of -$0.35.
What is the CSTL price target?
The median analyst price target from 9 analysts is $45.00, with a range of $35.00 – $57.00.
Is CSTL Shariah compliant?
Nama's AAOIFI-style screen reads Castle Biosciences, Inc. as Not Shariah Compliant. At least one of the three ratios or the industry test failed.