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CASTLE BIOSCIENCES, INC. (CSTL) Overview

CASTLE BIOSCIENCES, INC. (CSTL) Overview

  • 1 Apr 2026: Period ending 30 Jun 2026; Estimate (m); Actual -0.07; Beat / miss (m).
  • 1 Jan 2026: Period ending 31 Mar 2026; Estimate (m); Actual -0.49; Beat / miss (m).
  • 1 Jul 2025: Period ending 30 Sept 2025; Estimate (m); Actual -0.02; Beat / miss (m).
  • 1 Apr 2025: Period ending 30 Jun 2025; Estimate (m); Actual 0.15; Beat / miss (m).

Stock Price Chart

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Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$17.24$20.91$25.35$30.74$37.27$45.192025-11-062026-11-06$11.08$15.76$22.42$31.90$45.39$64.592021-11-082026-11-06$11.08$17.28$26.94$42.02$65.53$102.202019-07-252026-11-06$11.08$17.28$26.94$42.02$65.53$102.202019-07-252026-11-06$11.08$17.28$26.94$42.02$65.53$102.202019-07-252026-11-06

Logarithmic scale. Both lines share the same starting value for the selected range.

Last close
$32.48
Previous close
$34.88
Change
-$2.40
Change (%)
-6.87%
Close date
2026-11-06
Previous close date
2026-09-29
Open
(m)
Day high
(m)
Day low
(m)
Last session volume
(m)
Last session value
(m)
Currency
USD
Price basis
split-adjusted
Volume basis
(m)

Performance

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Cumulative total returns · 2026-09-29

YTD

CSTL
-10.33%
S&P 500
(m)

1 year

CSTL
+55.99%
S&P 500
(m)

3 years

CSTL
+106.51%
S&P 500
(m)

5 years

CSTL
-46.20%
S&P 500
(m)

Earnings trends

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Earnings per share

USD / share · As filed

30 Jun 2026 ○ Estimate (m) ● Actual -0.07

-0.98-0.65-0.320.000.3331 Mar 2025: estimate (m); actual -0.9031 Mar 2025(m)30 Jun 2025: estimate (m); actual 0.1530 Jun 2025(m)30 Sept 2025: estimate (m); actual -0.0230 Sept 2025(m)31 Mar 2026: estimate (m); actual -0.4931 Mar 2026(m)30 Jun 2026: estimate (m); actual -0.0730 Jun 2026(m)
Comparison details
Period startPeriod endingEstimateActualBeat / missReport date
1 Apr 202630 Jun 2026(m)-0.07(m)(m)
1 Jan 202631 Mar 2026(m)-0.49(m)(m)
1 Jul 202530 Sept 2025(m)-0.02(m)(m)
1 Apr 202530 Jun 2025(m)0.15(m)(m)
1 Jan 202531 Mar 2025(m)-0.90(m)(m)

31 Dec 2025 ○ Estimate (m) ● Actual -0.83

-2.66-1.80-0.93-0.070.8031 Dec 2021: estimate (m); actual -1.2431 Dec 2021(m)31 Dec 2022: estimate (m); actual -2.5831 Dec 2022(m)31 Dec 2023: estimate (m); actual -2.1431 Dec 2023(m)31 Dec 2024: estimate (m); actual 0.6231 Dec 2024(m)31 Dec 2025: estimate (m); actual -0.8331 Dec 2025(m)
Comparison details
Period startPeriod endingEstimateActualBeat / missReport date
1 Jan 202531 Dec 2025(m)-0.83(m)(m)
1 Jan 202431 Dec 2024(m)0.62(m)(m)
1 Jan 202331 Dec 2023(m)-2.14(m)(m)
1 Jan 202231 Dec 2022(m)-2.58(m)(m)
1 Jan 202131 Dec 2021(m)-1.24(m)(m)

Revenue vs. Earnings

USD

30 Jun 2026 ■ Revenue 103.55M ■ Earnings -2.06M — Profit margin -1.99%

-28.69M-18.4%20.11M-12.1%68.91M-5.9%117.71M0.4%30 Sept 2025: revenue 83.04M; earnings -0.50M; profit margin -0.60%30 Sept 202531 Dec 2025: revenue 87.01M*; earnings -2.33M*; profit margin -2.68%*; Revenue: Annual amount − nine-month amount; Earnings: Annual amount − nine-month amount; period 2025-10-01 to 2025-12-31; USD.31 Dec 202531 Mar 2026: revenue 83.68M; earnings -14.52M; profit margin -17.35%31 Mar 202630 Jun 2026: revenue 103.55M; earnings -2.06M; profit margin -1.99%30 Jun 2026

31 Dec 2025 ■ Revenue 344.23M ■ Earnings -24.16M — Profit margin -7.02%

-116.50M-50.0%53.53M-31.2%223.56M-12.3%393.59M6.5%31 Dec 2022: revenue 137.04M; earnings -67.14M; profit margin -48.99%31 Dec 202231 Dec 2023: revenue 219.79M; earnings -57.47M; profit margin -26.15%31 Dec 202331 Dec 2024: revenue 332.07M; earnings 18.25M; profit margin 5.49%31 Dec 202431 Dec 2025: revenue 344.23M; earnings -24.16M; profit margin -7.02%31 Dec 2025

Analyst insights

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RatingsBuyHoldSellOther ratingsLast CloseAverage TargetUpsideHigh TargetLow Target
(m)(m)(m)(m)(m)$32.48(m)(m)(m)(m)
Past 12 Months12 Month ForecastLast Close$32.48High(m)Average(m)Low(m)2025-11-062026-11-06

Recent news

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(m)

YouTube videos mentioning CSTL

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(m)

Statistics

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Retained observations as of 2026-11-11; financial period ending (m).

Forward P/E
(m)
PEG ratio · 5-year expected
(m)
Shares held by insiders
(m)
Insider transactions · change (%)
(m)
Shares held by institutions
(m)
Institutional transactions · change (%)
(m)
Diluted EPS · 12 month
(m)
EPS estimate · next quarter
(m)
EPS estimate · next year
(m)
EPS growth · current annual estimate
(m)
EPS growth · next annual estimate
(m)
EPS growth · next 5 years expected
(m)
EPS growth · past 3 years annualized
(m)
EPS growth · past 5 years annualized
(m)
EPS change · 12 months vs prior year
(m)
EPS change · latest quarter vs previous quarter
(m)
Latest earnings report date
(m)
EPS surprise · latest reported quarter
(m)
Net income · 12 month
(m)
Profit margin
(m)
Return on assets · 12 month
(m)
Stock compensation expense · all employees · 12 months
(m)
Index membership
(m)
Employees
883.00
IPO date
(m)
Options available
(m)
Shortable
(m)
Analyst recommendation
(m)
Analyst target price
(m)
Price volatility · week
(m)
Price volatility · month
(m)
Average true range · 14 sessions
(m)
Relative strength index · 14 sessions
(m)
Relative volume
(m)
Average daily volume
333.00K
Latest session volume
(m)
Last session value
(m)
30 days ago session value
(m)
1 year ago session value
(m)
Number of trades
(m)
Total return · week
0.09%*
Total return · month
4.12%*
Total return · quarter
43.42%*
Total return · half year
48.24%*
Total return · year to date
-10.33%*
Total return · 1 year
55.99%*
Total return · 3 years
106.51%*
Total return · 5 years
-46.20%*
Market cap
(m)
Book value per share · latest quarter
(m)
Price / cash · latest quarter
(m)
Enterprise value
(m)
Enterprise value / revenue
(m)
Enterprise value / EBITDA
(m)
Dividend · 12 months per share
(m)
Dividend ex-date
(m)
Next dividend ex-date
(m)
Next dividend amount per share
(m)
Dividend growth · 3 years annualized
(m)
Dividend growth · 5 years annualized
(m)
Revenue · 12 month
(m)
Revenue growth · past 3 years annualized
(m)
Revenue growth · past 5 years annualized
(m)
Revenue change · 12 months vs prior year
(m)
Revenue change · latest quarter vs previous quarter
(m)
Revenue surprise · latest reported quarter
(m)
Levered free cash flow · 12 month
(m)
Debt / equity · latest quarter
(m)
Long-term debt / equity · latest quarter
(m)
Return on equity · 12 month
(m)
Return on invested capital · 12 months
(m)
Previous close
(m)
Latest closing price
(m)
Latest session change (%)
(m)
52-week high
(m)
52-week low
(m)
Price vs 20-session moving average
(m)
Price vs 50-session moving average
(m)
Price vs 200-session moving average
(m)
Float shares
(m)
Short float (%)
(m)
Short ratio (days to cover)
(m)
Short interest (shares)
(m)

Five-year projected P/E and P/S repeat the preceding five-year EPS and revenue CAGR, holding current price and market cap constant. Hover a calculated row for its formula. Net assets = assets − debt − payables − deferred revenue − obligations due within 1 year − obligations due after 1 year.

Holders breakdown

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BreakdownOwnership
(m)Shares held by all insiders
(m)Shares held by institutions
(m)Float held by institutions
(m)Institutions holding shares

Other holders

(m)

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Insider holders

(m)

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Top institutional holders

(m)

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Top mutual fund holders

(m)

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CASTLE BIOSCIENCES, INC. Overview

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(m)

(m)

SEC CIK
1447362
Industry (SIC)
8071 Services-Medical Laboratories
Country of operation
United States
Business address
1500 W. PARKWOOD AVE., SUITE 400, FRIENDSWOOD, Texas, 77546, United States
Fiscal year end
1231
Phone
866-788-9007

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