CASTLE BIOSCIENCES INC (CSTL) Stock Fundamental Analysis

NASDAQ:CSTL • US14843C1053

33.67 USD
+0.25 (+0.75%)
At close: Feb 18, 2026
33.67 USD
0 (0%)
After Hours: 2/18/2026, 8:23:18 PM
Overview Stock Chart Technical Analysis Fundamental Analysis Analyst Ratings Earnings Estimates Financials Ownership News
Fundamental Rating

4

CSTL gets a fundamental rating of 4 out of 10. The analysis compared the fundamentals against 102 industry peers in the Health Care Providers & Services industry. CSTL has a great financial health rating, but its profitability evaluates not so good. CSTL is quite expensive at the moment. It does show a decent growth rate.


Dividend Valuation Growth Profitability Health

2

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.
  • The reported operating cash flow has been mixed in the past 5 years: CSTL reported negative operating cash flow in multiple 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

  • Looking at the Return On Assets, with a value of -2.17%, CSTL is doing worse than 60.78% of the companies in the same industry.
  • CSTL's Return On Equity of -2.62% is in line compared to the rest of the industry. CSTL outperforms 48.04% of its industry peers.
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

  • CSTL's Profit Margin has been stable in the last couple of years.
  • In the last couple of years the Operating Margin of CSTL has declined.
  • With an excellent Gross Margin value of 79.94%, CSTL belongs to the best of the industry, outperforming 95.10% of the companies in the same industry.
  • In the last couple of years the Gross Margin of CSTL has remained more or less at the same level.
  • CSTL does not have Profit Margin and Operating Margin available, so we won't be analyzing them here.
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

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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
  • Compared to 5 years ago, CSTL has more shares outstanding
  • 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 6.66. This indicates that CSTL is financially healthy and has little risk of bankruptcy at the moment.
  • CSTL has a Altman-Z score of 6.66. This is amongst the best in the industry. CSTL outperforms 92.16% of its industry peers.
  • 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.
  • Looking at the Debt to FCF ratio, with a value of 0.41, CSTL belongs to the top of the industry, outperforming 90.20% of the companies in the same industry.
  • CSTL has a Debt/Equity ratio of 0.02. This is a healthy value indicating a solid balance between debt and equity.
  • CSTL has a Debt to Equity ratio of 0.02. This is amongst the best in the industry. CSTL outperforms 81.37% of its industry peers.
Industry RankSector Rank
Debt/Equity 0.02
Debt/FCF 0.41
Altman-Z 6.66
ROIC/WACCN/A
WACC8.68%
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

  • A Current Ratio of 6.47 indicates that CSTL has no problem at all paying its short term obligations.
  • CSTL has a better Current ratio (6.47) than 96.08% of its industry peers.
  • A Quick Ratio of 6.31 indicates that CSTL has no problem at all paying its short term obligations.
  • The Quick ratio of CSTL (6.31) is better than 96.08% of its industry peers.
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

  • The Earnings Per Share has grown by an impressive 30.00% over the past year.
  • Measured over the past years, CSTL shows a very strong growth in Earnings Per Share. The EPS has been growing by 29.69% on average per year.
  • Looking at the last year, CSTL shows a quite strong growth in Revenue. The Revenue has grown by 10.15% in the last year.
  • CSTL shows a strong growth in Revenue. Measured over the last years, the Revenue has been growing by 44.95% yearly.
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

  • The Earnings Per Share is expected to decrease by -7.87% on average over the next years.
  • Based on estimates for the next years, CSTL will show a small growth in Revenue. The Revenue will grow by 6.72% on average per year.
EPS Next Y-271.62%
EPS Next 2Y-102.72%
EPS Next 3Y-45.4%
EPS Next 5Y-7.87%
Revenue Next Year2.27%
Revenue Next 2Y0.63%
Revenue Next 3Y4.83%
Revenue Next 5Y6.72%

3.3 Evolution

  • The EPS growth rate is decreasing: in the next years the growth will be less than in the last years.
  • The Revenue growth rate is decreasing: in the next years the growth will be less than in the last years.
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 500M
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

  • A Price/Earnings ratio of 129.50 indicates a quite expensive valuation of CSTL.
  • The rest of the industry has a similar Price/Earnings ratio as CSTL.
  • CSTL's Price/Earnings ratio indicates a rather expensive valuation when compared to the S&P500 average which is at 27.27.
  • The Forward Price/Earnings Ratio is negative for CSTL. No positive earnings are expected for the next year.
Industry RankSector Rank
PE 129.5
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

  • 63.73% of the companies in the same industry are cheaper than CSTL, based on the Enterprise Value to EBITDA ratio.
  • CSTL's Price/Free Cash Flow ratio is in line with the industry average.
Industry RankSector Rank
P/FCF 38.73
EV/EBITDA 64.34
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)4.36
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 (2/18/2026, 8:23:18 PM)

After market: 33.67 0 (0%)

33.67

+0.25 (+0.75%)

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 Change-1.35%
Ins Owners2.46%
Ins Owner Change-1.53%
Market Cap982.83M
Revenue(TTM)343.53M
Net Income(TTM)-12.24M
Analysts87.69
Price Target45.75 (35.88%)
Short Float %5.44%
Short Ratio3.9
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)14.73%
EPS NQ rev (3m)22.87%
EPS NY rev (1m)3.13%
EPS NY rev (3m)41.44%
Revenue NQ rev (1m)3.31%
Revenue NQ rev (3m)5.2%
Revenue NY rev (1m)0.33%
Revenue NY rev (3m)5.46%
Valuation
Industry RankSector Rank
PE 129.5
Fwd PE N/A
P/S 2.86
P/FCF 38.73
P/OCF 15.91
P/B 2.1
P/tB 2.69
EV/EBITDA 64.34
EPS(TTM)0.26
EY0.77%
EPS(NY)-1.33
Fwd EYN/A
FCF(TTM)0.87
FCFY2.58%
OCF(TTM)2.12
OCFY6.29%
SpS11.77
BVpS16
TBVpS12.51
PEG (NY)N/A
PEG (5Y)4.36
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 6.66
F-Score4
WACC8.68%
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-7.87%
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 5Y6.72%
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 4 / 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 2 / 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 129.5 and the Price/Book (PB) ratio is 2.1.