Healthcare / Diagnostics & ResearchUpdated 2026-05-10 22:07 UTC

CSTL stock hub

Castle Biosciences, Inc. has a live ticker hub with the latest available market, valuation, profitability, growth, ownership, and risk indicators.

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Fair value midpoint

n/a

Fair value pending

Upside to midpoint

n/a

Based on latest report

Confidence

n/a

Data quality and model convergence

Market cap

601.4M

NASDAQ

Market data

Live price

Current market quote for this ticker.

Current price

CSTL

In the news

Latest news · CSTL

Recent company headlines from major financial publishers.

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Fetching the latest headlines.

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Fetching the latest headlines.

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Fetching the latest headlines.

Calendar

Next earnings

Upcoming earnings date and setup when available.

Upcoming

DateLoading

Window—

EPS estimate—

Revenue estimate—

Sector context

Where the current metrics sit

Percentiles come from the backend screener cohort cache for the ticker's country and sector.

Forward P/En/a

P25 12.3P50 18.4P75 33.1

Trailing P/En/a

P25 14.9P50 23.2P75 38.5

ROE-2.8

P25 -105.6P50 -46.5P75 -3.1

ROIC-15

P25 -63.1P50 -27.3P75 0.5

Benchmarks - 1M

S&P 500n/a

Nasdaq Compositen/a

Dow Jones Industrial Averagen/a

Russell 2000n/a

Indicator catalog

All CSTL market and fundamental indicators

A searchable catalog of the available market, valuation, profitability, growth, balance-sheet, ownership, and analyst metrics for this ticker.

Available fields

222

Groups with data

Currency

USD

Showing 222 of 222 available metrics for this ticker.

Profile and market data

Ticker identity, listing, currency, market cap, and source dates.

Metric	Value
Cik	0001447362
Company name	Castle Biosciences, Inc.
Country	United States
Country code	US
Cusip	14843C105
Employees	883
Employees Change	122%
Employees Change Percent	16.03
Enterprise value	$376.5M
Exchange	NASDAQ
Financial currency	USD
First seen	2026-05-09
Industry	Diagnostics & Research
IPO Date	2019-07-25
Isin	US14843C1053
Last refreshed	2026-05-10
Market cap	$601.4M
Market cap category	Small-Cap
Price	$19.83
Price currency	USD
Rev Per Employee	384,960.36x
Sector	Healthcare
Sic	8071
Symbol	CSTL
Website	https://castlebiosciences.com

Valuation

Multiples, yields, enterprise-value ratios, and valuation checks.

Metric	Value
Earnings Yield	-2.13%
EV Sales Forward	1.04x
EV/FCF	83.33x
EV/Sales	1.11x
FCF yield	0.75%
P/B ratio	1.3x
P/S ratio	1.77x
PS Forward	1.66x

Profitability

Margins, returns on capital, cash conversion, and quality metrics.

Metric	Value
EBIT Margin	-9.79%
EBITDA Margin	-5.4%
FCF margin	1.33%
Gross margin	77.88%
Gross Profit	$264.7M
Gross Profit Growth	-6.91%
Gross Profit Growth Q	-11.81%
Gross Profit Growth3 Y	31.67%
Gross Profit Growth5 Y	35.61%
Net Income	$-12.8M
Net Income Growth Quarters	1%
Net Income Growth Years	0%
Pretax Margin	-5.19%
Profit Margin	-3.78%
Profit Per Employee	$-14,532
ROA	-3.96
Roa5y	-5.79
ROCE	-6.67
ROE	-2.85
Roe5y	-7.91
ROIC	-14.97
Roic5y	-40.26

Growth

Revenue, earnings, cash-flow, and forward growth indicators.

Metric	Value
Cagr1y	16.32%
Cagr3y	-3.76%
Cagr5y	-19.95%
EPS Growth Quarters	1
EPS Growth Years	0
FCF Growth	-89.18%
FCF Growth5 Y	24.94%
OCF Growth	-26.52%
OCF Growth5 Y	49.39%
Revenue Growth	-2.06x
Revenue Growth Q	-4.9x
Revenue Growth Years	8x
Revenue Growth3 Y	30.71x
Revenue Growth5 Y	37.95x

Financial strength

Debt, cash, solvency, accounting-quality, and balance-sheet signals.

Metric	Value
Asset Turnover	$0.65
Assets	$547.8M
Cash	$261.7M
Current Assets	$328.9M
Current Liabilities	$48.8M
Debt	$36.7M
Debt Equity	$0.08
Debt FCF	$8.13
Equity	$461.4M
Interest Coverage	-164
Liabilities	$86.4M
Long Term Assets	$218.9M
Long Term Liabilities	$37.6M
Net Cash	$225M
Net Cash By Market Cap	$37.4
Net Cash Growth	-11.74%
Net Debt Equity	$-0.49
Net Debt FCF	$-49.79
Tangible Book Value	$364.1M
Tangible Book Value Per Share	$12.02
WACC	9.78

Liquidity

Current-asset coverage and working-capital efficiency metrics.

Metric	Value
Current ratio	6.75
Inventory Turnover	8.69
Net Working Capital	$21.4M
Quick ratio	6.26
Working Capital	$280.1M
Working Capital Turnover	$1.15

Dividends and buybacks

Dividend yield, payout, buybacks, and shareholder-yield indicators.

Metric	Value
Buyback Yield	-4.45%
Dividend Yield	0%

Performance and technicals

Returns, volatility, beta, momentum, RSI, and moving-average context.

Metric	Value
1Y total return	16.31%
200-day SMA	28.57
3Y total return	-10.88%
50-day SMA	25.06
50-day SMA vs 200-day SMA	50under200
5Y total return	-67.13%
All Time High	107.7
All Time High Change	-81.59%
All Time High Date	2021-02-10
All Time Low	9.26
All Time Low Change	114.15%
All Time Low Date	2023-06-05
ATR	1.47
Beta	1.11
Beta1y	0.59
Beta2y	0.44
Ch YTD	-49.02
High	19.85
High52	44.28
High52 Date	2026-01-26
High52ch	-55.22%
Low	18.66
Low52	14.59
Low52 Date	2025-08-04
Low52ch	35.92%
Ma50ch	-20.88%
Premarket Change Percent	2.6
Premarket Price	$19.74
Premarket Volume	11,690
Price vs 200-day SMA	-30.6%
RSI	30.13
RSI Monthly	43.99
RSI Weekly	31.91
Sharpe ratio	0.48x
Sortino ratio	0.86
Total Return	-4.45%
Tr YTD	-49.02
Tr1m	-20.14%
Tr1w	-20.07%
Tr3m	-39.45%

Analyst estimates

Ratings, targets, revisions, and forward estimate fields.

Metric	Value
Analyst Count	6
Analyst Ratings	Strong Buy
Earnings EPS Estimate	$-0.5
Earnings Revenue Estimate	79,690,400x
Earnings Revenue Estimate Growth	-9.44x
Operating Income	$-33.3M
Operating margin	-9.79
Price target	$45.33
Price Target Change	$129

Ownership and float

Institutional, insider, float, short-interest, and share-count fields.

Metric	Value
Float	25,775,513%
Float Percent	84.98%
Net Borrowing	-113,000
Shares Insiders	2.34%
Shares Institutions	78.17%
Shares Out	30,329,952
Shares Qo Q	1.9%
Shares Yo Y	4.45%
Short Float	5.68%
Short Ratio	4.87
Short Shares	4.82

Other indicators

Additional ticker metrics that do not fit the primary research groupings yet.

Metric	Value
Adjusted FCF	$-40M
Average Volume	393,411.55x
Bv Per Share	15.23
CAPEX	$-43.7M
Ch1m	-20.14
Ch1w	-20.07
Ch1y	16.31
Ch3m	-39.45
Ch3y	-10.88
Ch5y	-67.13
Ch6m	-39.98
Change	3.07%
Change From Open	2.96
Close	19.24
Days Gap	0.1
Depreciation Amortization	14,936,000
Dollar Volume	9,886,206.8
Earnings Date	2026-05-06
Earnings Time	amc
EBIT	$-33.3M
EBITDA	$-18.4M
EPS	$-0.44
F Score	3
FCF	$4.5M
FCF EV Yield	1.2x
FCF Per Share	$0.15
Financing CF	-10,440,000
Fiscal Year End	December
Founded	2,007
Goodwill	10,691,000
Income Tax	$-4.8M
Investing CF	-63,739,000
Ipr	23.94
Iprfo	-0.85
Is Primary Listing	1
Is Spac	No
Last Earnings Date	2026-05-06
Last Report Date	2026-03-31
Last Split Type	Never
Last10k Filing Date	2026-02-26
Ma150	31.13
Ma150ch	-36.3%
Ma20	24.11
Ma20ch	-17.77%
Net CF	-25,925,000
Next Earnings Date	2026-08-03
Open	19.26
Optionable	Yes
P FCF Ratio	133.1
P OCF Ratio	12.46
Position In Range	98.32
Ppne	115,358,000
Pre Close	19.24
Price Date	2026-05-08
Ptbv Ratio	1.65
Relative Volume	1.27x
Revenue	339,920,000x
SBC By Revenue	13.09x
Share Based Comp	44,490,000
Tax By Revenue	-1.42x
Tr6m	-39.98%
Us State	Texas
Volume	498,548
Z Score	5.67

Fast facts

Decision checkpoints

A compact product layer over the same report payload.

Risk gate

n/a

Named kill scenarios are reviewed before any bullish rating can stand.

Moat score

n/a

Business quality stays separate from stock attractiveness.

Forward P/E

n/a

Valuation uses the full report model stack, not a single multiple.

Next action

Research pending

Final action steps are kept in the recommendation tab.

Income

Does CSTL pay a dividend?

Capital-return profile for this ticker.

Performance

CSTL stock returns vs the market

Total return (incl. dividends) compared to S&P 500.

Ownership

Who owns CSTL?

Insider, institutional, and short-interest positioning.

Institutional ownership

+78.2%

Float: +85.0% of shares outstanding

Insider ownership

+2.3%

Stake held by company insiders. Higher generally signals alignment.

Negative means the company is buying back shares.

Technical

CSTL momentum and risk profile

RSI, moving-average stack, beta, and risk-adjusted return.

RSI (14)

30.1

Neutral momentum band

Price vs 200-day MA

-30.6%

50/200-day relationship not available

Beta (5Y)

1.11

Moves roughly with the market

Sharpe ratio

0.48

Risk-adjusted return — higher is better; >1.0 is solid.

Questions

About CSTL

Hub-level FAQ points readers to the deeper analysis pages.

What is the current CSTL stock rating?

Castle Biosciences, Inc. is currently shown with the latest rating in the latest report. The hub links directly to the full analysis surface where the rating, fair-value bridge, risks, and scorecard are documented together.

Where can I read the full CSTL analysis?

The full report lives at /stocks/CSTL/analysis. The bare ticker page is a product hub that summarizes the latest read and sends readers into the relocated analysis tabs without making the analysis surface depend on the hub.

What fair-value range is used for CSTL?

The latest report frames CSTL around the latest fair-value range. Treat that range as the entry point, then check the valuation, sensitivity, and bear-case tabs before making an investment decision.

How often is the CSTL page updated?

The hub updates with the latest published stock report and live backend market data. The analysis pages remain reachable under /analysis, so a hub rollback does not remove the report reader.