Castle Biosciences Inc (NASDAQ:CSTL) — Market Cap & Net Worth

$724.17 Million USD  · Rank #10671

Market Cap & Net Worth: Castle Biosciences Inc (CSTL)

Castle Biosciences Inc (NASDAQ:CSTL) has a market capitalization of $724.17 Million ($724.17 Million) as of May 2, 2026. Listed on the NASDAQ stock exchange, this USA-based company holds position #10671 globally and #2645 in its home market, demonstrating a 4.73% increase in market value over the past year.

Market capitalization, also known as net worth in stock markets, is calculated by multiplying Castle Biosciences Inc's stock price $24.81 by its total outstanding shares 29188659 (29.19 Million). Analyse cash efficiency ratio of Castle Biosciences Inc to see how efficiently the company converts income to cash.

Castle Biosciences Inc Market Cap History: 2019 to 2026

Castle Biosciences Inc's market capitalization history from 2019 to 2026. Data shows growth from $1.00 Billion to $724.17 Million (2.21% CAGR).

Index Memberships

Castle Biosciences Inc is a constituent of 3 market indices:

Index Total Market Cap Weight (%) Rank by Market Cap
NASDAQ Health Care
IXHC
$2.41 Trillion 0.03% #285 of 976
NASDAQ Composite
IXIC
$38.77 Trillion 0.00% #1052 of 3165
NASDAQ Biotechnology
NBI
$1.67 Trillion 0.04% #169 of 263

Weight: Castle Biosciences Inc's market cap as a percentage of total index value. Rank: Position among all constituents by market cap.

Castle Biosciences Inc Market Cap to Earnings & Revenue Ratios Timeline

This chart shows how Castle Biosciences Inc's valuation ratios have evolved. The Price to Sales (P/S) ratio compares market cap to revenue, while the Price to Earnings (P/E) ratio compares market cap to net income. Lower values may indicate a more undervalued company relative to its financial performance.

Latest Price to Sales (P/S) Ratio

2.34x

Castle Biosciences Inc's market cap is 2.34 times its annual revenue

Industry average: 2.24x Higher than industry average

Latest Price to Earnings (P/E) Ratio

42.64x

Castle Biosciences Inc's market cap is 42.64 times its annual earnings

Industry average: 211.96x Lower than industry average

What These Ratios Tell Investors:

  • Price to Sales (P/S) Ratio: Shows how much investors are paying for each dollar of the company's sales. Lower P/S ratios may indicate undervaluation.
  • Price to Earnings (P/E) Ratio: Shows how much investors are paying for each dollar of the company's earnings. This is one of the most common valuation metrics.
  • Trends in these ratios over time can indicate changing investor sentiment about the company's future growth prospects.
  • Industry comparison provides context for whether the company is valued higher or lower than peers.
Year Market Cap (USD) Revenue (USD) Net Income (USD) P/S Ratio P/E Ratio
2019 $1.00 Billion $51.87 Million $5.28 Million 19.34x 190.11x
2020 $1.96 Billion $62.65 Million -$10.28 Million 31.29x N/A
2021 $1.25 Billion $94.08 Million -$31.29 Million 13.30x N/A
2022 $687.10 Million $137.04 Million -$67.14 Million 5.01x N/A
2023 $629.89 Million $219.79 Million -$57.47 Million 2.87x N/A
2024 $777.88 Million $332.07 Million $18.25 Million 2.34x 42.64x

Competitor Companies of CSTL by Market Capitalization

Companies near Castle Biosciences Inc in the global market cap rankings as of May 2, 2026.

Key companies related to Castle Biosciences Inc by market ranking:

  • Thermo Fisher Scientific Inc (NYSE:TMO): Ranked #126 globally with a market cap of $176.29 Billion USD.
  • Danaher Corporation (NYSE:DHR): Ranked #189 globally with a market cap of $123.72 Billion USD.
  • IDEXX Laboratories Inc (NASDAQ:IDXX): Ranked #578 globally with a market cap of $45.31 Billion USD.
  • LONZA GROUP UNSP.ADR 1/10 (F:LO3A): Ranked #643 globally with a market cap of $41.04 Billion USD ( €35.10 Billion EUR).
Market capitalization comparison (in billions USD)
Rank Company Symbol Market Cap Price
#126 Thermo Fisher Scientific Inc NYSE:TMO $176.29 Billion $469.21
#189 Danaher Corporation NYSE:DHR $123.72 Billion $175.15
#578 IDEXX Laboratories Inc NASDAQ:IDXX $45.31 Billion $567.46
#643 LONZA GROUP UNSP.ADR 1/10 F:LO3A $41.04 Billion €54.50

Castle Biosciences Inc Historical Marketcap From 2019 to 2026

Between 2019 and today, Castle Biosciences Inc's market cap moved from $1.00 Billion to $ 724.17 Million, with a yearly change of 2.21%.

Year Market Cap Change (%)
2026 $724.17 Million -36.22%
2025 $1.14 Billion +45.97%
2024 $777.88 Million +23.49%
2023 $629.89 Million -8.33%
2022 $687.10 Million -45.09%
2021 $1.25 Billion -36.16%
2020 $1.96 Billion +95.37%
2019 $1.00 Billion --

End of Day Market Cap According to Different Sources

On May 2nd, 2026 the market cap of Castle Biosciences Inc was reported to be:

Source Market Cap
Yahoo Finance $724.17 Million USD
MoneyControl $724.17 Million USD
MarketWatch $724.17 Million USD
marketcap.company $724.17 Million USD
Reuters $724.17 Million USD

Market cap values may vary slightly between sources due to differences in calculation methods, timing, and data refresh rates.

About Castle Biosciences Inc

NASDAQ:CSTL USA Diagnostics & Research
Market Cap
$724.17 Million
Market Cap Rank
#10671 Global
#2645 in USA
Share Price
$24.81
Change (1 day)
+1.31%
52-Week Range
$14.65 - $43.04
All Time High
$97.33
About

Castle Biosciences, Inc., a molecular diagnostics company, provides test solutions for the diagnosis and treatment of dermatologic cancers, Barrett's esophagus (BE), uveal melanoma, and mental health conditions. The company offers DecisionDx-Melanoma, a risk stratification gene expression profile (GEP) test that predicts the risk of metastasis for patients with uveal melanoma; DecisionDx-SCC, a r… Read more