CASTLE BIOSCIENCES INC (CSTL) Stock Fundamental Analysis

NASDAQ:CSTL • US14843C1053

33.33 USD
+1.43 (+4.48%)
Last: Feb 13, 2026, 12:17 PM
Overview Stock Chart Technical Analysis Fundamental Analysis Analyst Ratings Earnings Estimates Financials Ownership News
Fundamental Rating

5

CSTL gets a fundamental rating of 5 out of 10. The analysis compared the fundamentals against 102 industry peers in the Health Care Providers & Services industry. No worries on liquidiy or solvency for CSTL as it has an excellent financial health rating, but there are worries on the profitability. While showing a medium growth rate, CSTL is valued expensive at the moment.


Dividend Valuation Growth Profitability Health

3

1. Profitability

1.1 Basic Checks

  • In the past year CSTL was profitable.
  • In the past year CSTL had a positive cash flow from operations.
  • In the past 5 years CSTL reported 4 times negative net income.
  • In multiple years CSTL reported negative operating cash flow during the last 5 years.
CSTL Yearly Net Income VS EBIT VS OCF VS FCFCSTL Yearly Net Income VS EBIT VS OCF VS FCFYearly Net Income VS EBIT VS OCF VS FCF 2017 2018 2019 2020 2021 2022 2023 2024 0 50M -50M

1.2 Ratios

  • CSTL has a Return On Assets of -2.17%. This is comparable to the rest of the industry: CSTL outperforms 40.20% of its industry peers.
  • CSTL has a Return On Equity (-2.62%) which is comparable to the rest of the industry.
Industry RankSector Rank
ROA -2.17%
ROE -2.62%
ROIC N/A
ROA(3y)-8.08%
ROA(5y)-6.67%
ROE(3y)-9.16%
ROE(5y)-7.51%
ROIC(3y)N/A
ROIC(5y)N/A
CSTL Yearly ROA, ROE, ROICCSTL Yearly ROA, ROE, ROICYearly ROA, ROE, ROIC 2017 2018 2019 2020 2021 2022 2023 2024 0 50 -50 100 -100 -150

1.3 Margins

  • In the last couple of years the Profit Margin of CSTL has remained more or less at the same level.
  • CSTL's Operating Margin has declined in the last couple of years.
  • CSTL has a Gross Margin of 79.94%. This is amongst the best in the industry. CSTL outperforms 95.10% of its industry peers.
  • In the last couple of years the Gross Margin of CSTL has remained more or less at the same level.
  • The Profit Margin and Operating Margin are not available for CSTL so they could not be analyzed.
Industry RankSector Rank
OM N/A
PM (TTM) N/A
GM 79.94%
OM growth 3YN/A
OM growth 5Y-28.6%
PM growth 3YN/A
PM growth 5Y-1.01%
GM growth 3Y-0.54%
GM growth 5Y-0.96%
CSTL Yearly Profit, Operating, Gross MarginsCSTL Yearly Profit, Operating, Gross MarginsYearly Profit, Operating, Gross Margins 2017 2018 2019 2020 2021 2022 2023 2024 0 50 -50 -100

More info and screens

ROAROEROICOperating and Profit MarginShow most profitable peers

8

2. Health

2.1 Basic Checks

  • CSTL does not have a ROIC to compare to the WACC, probably because it is not profitable.
  • Compared to 1 year ago, CSTL has more shares outstanding
  • CSTL has more shares outstanding than it did 5 years ago.
  • The debt/assets ratio for CSTL is higher compared to a year ago.
CSTL Yearly Shares OutstandingCSTL Yearly Shares OutstandingYearly Shares Outstanding 2017 2018 2019 2020 2021 2022 2023 2024 5M 10M 15M 20M 25M
CSTL Yearly Total Debt VS Total AssetsCSTL Yearly Total Debt VS Total AssetsYearly Total Debt VS Total Assets 2017 2018 2019 2020 2021 2022 2023 2024 100M 200M 300M 400M 500M

2.2 Solvency

  • CSTL has an Altman-Z score of 6.33. This indicates that CSTL is financially healthy and has little risk of bankruptcy at the moment.
  • Looking at the Altman-Z score, with a value of 6.33, CSTL belongs to the top of the industry, outperforming 91.18% of the companies in the same industry.
  • CSTL has a debt to FCF ratio of 0.41. This is a very positive value and a sign of high solvency as it would only need 0.41 years to pay back of all of its debts.
  • CSTL has a Debt to FCF ratio of 0.41. This is amongst the best in the industry. CSTL outperforms 91.18% of its industry peers.
  • CSTL has a Debt/Equity ratio of 0.02. This is a healthy value indicating a solid balance between debt and equity.
  • Looking at the Debt to Equity ratio, with a value of 0.02, CSTL belongs to the top of the industry, outperforming 81.37% of the companies in the same industry.
Industry RankSector Rank
Debt/Equity 0.02
Debt/FCF 0.41
Altman-Z 6.33
ROIC/WACCN/A
WACC8.81%
CSTL Yearly LT Debt VS Equity VS FCFCSTL Yearly LT Debt VS Equity VS FCFYearly LT Debt VS Equity VS FCF 2017 2018 2019 2020 2021 2022 2023 2024 0 100M 200M 300M 400M

2.3 Liquidity

  • CSTL has a Current Ratio of 6.47. This indicates that CSTL is financially healthy and has no problem in meeting its short term obligations.
  • The Current ratio of CSTL (6.47) is better than 96.08% of its industry peers.
  • CSTL has a Quick Ratio of 6.31. This indicates that CSTL is financially healthy and has no problem in meeting its short term obligations.
  • Looking at the Quick ratio, with a value of 6.31, CSTL belongs to the top of the industry, outperforming 96.08% of the companies in the same industry.
Industry RankSector Rank
Current Ratio 6.47
Quick Ratio 6.31
CSTL Yearly Current Assets VS Current LiabilitesCSTL Yearly Current Assets VS Current LiabilitesYearly Current Assets VS Current Liabilites 2017 2018 2019 2020 2021 2022 2023 2024 100M 200M 300M 400M

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WACCDebt/EquityHow to determine the health of a companyAltman-Z scoreShow peers with great health

6

3. Growth

3.1 Past

  • CSTL shows a strong growth in Earnings Per Share. In the last year, the EPS has been growing by 30.00%, which is quite impressive.
  • The Earnings Per Share has been growing by 29.69% on average over the past years. This is a very strong growth
  • The Revenue has grown by 10.15% in the past year. This is quite good.
  • Measured over the past years, CSTL shows a very strong growth in Revenue. The Revenue has been growing by 44.95% on average per year.
EPS 1Y (TTM)30%
EPS 3YN/A
EPS 5Y29.69%
EPS Q2Q%-125%
Revenue 1Y (TTM)10.15%
Revenue growth 3Y52.25%
Revenue growth 5Y44.95%
Sales Q2Q%-3.19%

3.2 Future

  • CSTL is expected to show a very negative growth in Earnings Per Share. In the coming years, the EPS will decrease by -15.79% yearly.
  • Based on estimates for the next years, CSTL will show a small growth in Revenue. The Revenue will grow by 6.51% on average per year.
EPS Next Y-271.62%
EPS Next 2Y-102.72%
EPS Next 3Y-45.4%
EPS Next 5Y-15.78%
Revenue Next Year2.27%
Revenue Next 2Y0.63%
Revenue Next 3Y4.83%
Revenue Next 5Y6.51%

3.3 Evolution

  • When comparing the EPS growth rate of the last years to the growth rate of the upcoming years, we see that the growth is decreasing.
  • When comparing the Revenue growth rate of the last years to the growth rate of the upcoming years, we see that the growth is decreasing.
CSTL Yearly Revenue VS EstimatesCSTL Yearly Revenue VS EstimatesYearly Revenue VS Estimates 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 100M 200M 300M 400M
CSTL Yearly EPS VS EstimatesCSTL Yearly EPS VS EstimatesYearly EPS VS Estimates 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 0 -1 -2

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Find the best growth stocksShow best growing peers

1

4. Valuation

4.1 Price/Earnings Ratio

  • Based on the Price/Earnings ratio of 128.19, the valuation of CSTL can be described as expensive.
  • The rest of the industry has a similar Price/Earnings ratio as CSTL.
  • Compared to an average S&P500 Price/Earnings ratio of 27.67, CSTL is valued quite expensively.
  • CSTL is expected to report negative earnings next year, which makes the Forward Price/Earnings Ratio negative.
Industry RankSector Rank
PE 128.19
Fwd PE N/A
CSTL Price Earnings VS Forward Price EarningsCSTL Price Earnings VS Forward Price Earnings ChartPrice Earnings - Forward Price Earnings PE FPE 0 50 100

4.2 Price Multiples

  • Based on the Enterprise Value to EBITDA ratio, CSTL is valued a bit more expensive than the industry average as 61.76% of the companies are valued more cheaply.
  • CSTL's Price/Free Cash Flow ratio is in line with the industry average.
Industry RankSector Rank
P/FCF 38.34
EV/EBITDA 57.74
CSTL Per share dataCSTL EPS, Sales, OCF, FCF, BookValue per sharePer Share Data Per Share 0 5 10 15

4.3 Compensation for Growth

  • A cheap valuation may be justified as CSTL's earnings are expected to decrease with -45.40% in the coming years.
PEG (NY)N/A
PEG (5Y)4.32
EPS Next 2Y-102.72%
EPS Next 3Y-45.4%

More info and screens

Price/EarningsPrice/FCFFCF per shareEV/EBITDAPEG RATIOShow best valued peers

0

5. Dividend

5.1 Amount

  • CSTL does not give a dividend.
Industry RankSector Rank
Dividend Yield 0%

More info and screens

Find the best dividend stocksShow peers with best dividend

CASTLE BIOSCIENCES INC

NASDAQ:CSTL (2/13/2026, 12:17:11 PM)

33.33

+1.43 (+4.48%)

Chartmill FA Rating
GICS SectorHealth Care
GICS IndustryGroupHealth Care Equipment & Services
GICS IndustryHealth Care Providers & Services
Earnings (Last)11-03
Earnings (Next)02-26
Inst Owners91.09%
Inst Owner Change0.1%
Ins Owners2.46%
Ins Owner Change-3.66%
Market Cap972.90M
Revenue(TTM)343.53M
Net Income(TTM)-12.24M
Analysts88.57
Price Target45.75 (37.26%)
Short Float %5.5%
Short Ratio3.89
Dividend
Industry RankSector Rank
Dividend Yield 0%
Yearly DividendN/A
Dividend Growth(5Y)N/A
DPN/A
Div Incr Years0
Div Non Decr Years0
Ex-DateN/A
Surprises & Revisions
EPS beat(2)2
Avg EPS beat(2)112.17%
Min EPS beat(2)96.25%
Max EPS beat(2)128.1%
EPS beat(4)3
Avg EPS beat(4)151.85%
Min EPS beat(4)-175.74%
Max EPS beat(4)558.79%
EPS beat(8)7
Avg EPS beat(8)149.84%
EPS beat(12)10
Avg EPS beat(12)106.51%
EPS beat(16)13
Avg EPS beat(16)87.37%
Revenue beat(2)2
Avg Revenue beat(2)16.33%
Min Revenue beat(2)14.33%
Max Revenue beat(2)18.34%
Revenue beat(4)4
Avg Revenue beat(4)10.84%
Min Revenue beat(4)3.31%
Max Revenue beat(4)18.34%
Revenue beat(8)8
Avg Revenue beat(8)11.87%
Revenue beat(12)12
Avg Revenue beat(12)11.82%
Revenue beat(16)16
Avg Revenue beat(16)10.9%
PT rev (1m)18.83%
PT rev (3m)25.91%
EPS NQ rev (1m)16.47%
EPS NQ rev (3m)41.55%
EPS NY rev (1m)5.6%
EPS NY rev (3m)41.44%
Revenue NQ rev (1m)3.23%
Revenue NQ rev (3m)8.14%
Revenue NY rev (1m)1.17%
Revenue NY rev (3m)5.46%
Valuation
Industry RankSector Rank
PE 128.19
Fwd PE N/A
P/S 2.83
P/FCF 38.34
P/OCF 15.75
P/B 2.08
P/tB 2.66
EV/EBITDA 57.74
EPS(TTM)0.26
EY0.78%
EPS(NY)-1.33
Fwd EYN/A
FCF(TTM)0.87
FCFY2.61%
OCF(TTM)2.12
OCFY6.35%
SpS11.77
BVpS16
TBVpS12.51
PEG (NY)N/A
PEG (5Y)4.32
Graham Number9.67
Profitability
Industry RankSector Rank
ROA -2.17%
ROE -2.62%
ROCE N/A
ROIC N/A
ROICexc N/A
ROICexgc N/A
OM N/A
PM (TTM) N/A
GM 79.94%
FCFM 7.39%
ROA(3y)-8.08%
ROA(5y)-6.67%
ROE(3y)-9.16%
ROE(5y)-7.51%
ROIC(3y)N/A
ROIC(5y)N/A
ROICexc(3y)N/A
ROICexc(5y)N/A
ROICexgc(3y)N/A
ROICexgc(5y)N/A
ROCE(3y)N/A
ROCE(5y)N/A
ROICexgc growth 3YN/A
ROICexgc growth 5YN/A
ROICexc growth 3YN/A
ROICexc growth 5YN/A
OM growth 3YN/A
OM growth 5Y-28.6%
PM growth 3YN/A
PM growth 5Y-1.01%
GM growth 3Y-0.54%
GM growth 5Y-0.96%
F-Score4
Asset Turnover0.61
Health
Industry RankSector Rank
Debt/Equity 0.02
Debt/FCF 0.41
Debt/EBITDA 1.33
Cap/Depr 85.13%
Cap/Sales 10.6%
Interest Coverage N/A
Cash Conversion 789.13%
Profit Quality N/A
Current Ratio 6.47
Quick Ratio 6.31
Altman-Z 6.33
F-Score4
WACC8.81%
ROIC/WACCN/A
Cap/Depr(3y)113.65%
Cap/Depr(5y)290.73%
Cap/Sales(3y)6.28%
Cap/Sales(5y)6.02%
Profit Quality(3y)N/A
Profit Quality(5y)N/A
High Growth Momentum
Growth
EPS 1Y (TTM)30%
EPS 3YN/A
EPS 5Y29.69%
EPS Q2Q%-125%
EPS Next Y-271.62%
EPS Next 2Y-102.72%
EPS Next 3Y-45.4%
EPS Next 5Y-15.78%
Revenue 1Y (TTM)10.15%
Revenue growth 3Y52.25%
Revenue growth 5Y44.95%
Sales Q2Q%-3.19%
Revenue Next Year2.27%
Revenue Next 2Y0.63%
Revenue Next 3Y4.83%
Revenue Next 5Y6.51%
EBIT growth 1Y-3265.41%
EBIT growth 3YN/A
EBIT growth 5Y3.5%
EBIT Next Year646.51%
EBIT Next 3Y2.43%
EBIT Next 5Y-26.67%
FCF growth 1Y160.68%
FCF growth 3YN/A
FCF growth 5Y43.14%
OCF growth 1Y304.51%
OCF growth 3YN/A
OCF growth 5Y56%

CASTLE BIOSCIENCES INC / CSTL FAQ

What is the fundamental rating for CSTL stock?

ChartMill assigns a fundamental rating of 5 / 10 to CSTL.


Can you provide the valuation status for CASTLE BIOSCIENCES INC?

ChartMill assigns a valuation rating of 1 / 10 to CASTLE BIOSCIENCES INC (CSTL). This can be considered as Overvalued.


Can you provide the profitability details for CASTLE BIOSCIENCES INC?

CASTLE BIOSCIENCES INC (CSTL) has a profitability rating of 3 / 10.


What are the PE and PB ratios of CASTLE BIOSCIENCES INC (CSTL) stock?

The Price/Earnings (PE) ratio for CASTLE BIOSCIENCES INC (CSTL) is 128.19 and the Price/Book (PB) ratio is 2.08.