Castle Biosciences (CSTL) Market Capitalization (2019 - 2026)
Castle Biosciences (CSTL) recorded Market Capitalization of $1.09 billion in Q3 2026, up 64.7% from $664.02 million a year earlier and up 50.3% from the prior quarter.
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Analysis
Castle Biosciences (CSTL) Market Capitalization (2019 - 2026) Analysis & Trends
For FY2025, Castle Biosciences reported Market Capitalization of $1.15 billion, up 52.1% from FY2024.
- Annual Market Capitalization has a five-year compound annual growth rate of -1.9% (FY2020 to FY2025).
- Across earlier years, Market Capitalization came in at $759.08 million in FY2024 (+28.3%), $591.52 million in FY2023 (-5.4%), $625.07 million in FY2022 (-42.5%) and $1.09 billion in FY2021 (-14.4%).
- Quarterly Market Capitalization has ranged from $367.48 million in Q2 2023 to $1.15 billion in Q4 2025 over the past five years.
- On a year-over-year basis, Market Capitalization has increased for four consecutive quarters, with growth averaging 21.6% over the last eight quarters.
- Peak year-over-year performance for Market Capitalization in the last five years was growth of 75.7% in Q3 2024, against a decline of 68.7% in Q2 2022 at the low end.
- Per Business Quant, the preceding three quarters came in at $727.63 million (Q2 2026), $743.77 million (Q1 2026) and $1.15 billion (Q4 2025).
Peer Set
Peer Comparison
| # | Company | Market Cap | Enterprise Value | Gross Profit (Qtr) |
|---|---|---|---|---|
| 1 | HCA Healthcare | 105.29 Bn | 103.13 Bn | 17.03 Bn |
| 2 | Natera | 46.06 Bn | 41.68 Bn | 513.47 Mn |
| 3 | Labcorp Holdings | 30.09 Bn | 28.19 Bn | 1.11 Bn |
| 4 | Quest Diagnostics | 28.58 Bn | 26.66 Bn | 1.04 Bn |
| 5 | Guardant Health | 20.44 Bn | 16.05 Bn | 236.15 Mn |
| 6 | BrightSpring Health Services | 14.16 Bn | 11.04 Bn | 518.55 Mn |
| 7 | Encompass Health | 13.83 Bn | 14.29 Bn | 1.54 Bn |
| 8 | Tempus AI | 12.69 Bn | 9.84 Bn | 266.70 Mn |
| 9 | Davita | 11.06 Bn | 9.92 Bn | 1.13 Bn |
| 10 | Castle Biosciences | 1.04 Bn | -65.97 Mn | 78.97 Mn |
Historic Data
Download Data
Historic Data
| Date | Value |
|---|---|
| Sep 30, 2026 | 1.09 Bn |
| Jun 30, 2026 | 727.63 Mn |
| Mar 31, 2026 | 743.77 Mn |
| Dec 31, 2025 | 1.15 Bn |
| Sep 30, 2025 | 664.02 Mn |
| Jun 30, 2025 | 591.80 Mn |
| Mar 31, 2025 | 577.48 Mn |
| Dec 31, 2024 | 759.08 Mn |
| Sep 30, 2024 | 797.87 Mn |
| Jun 30, 2024 | 603.27 Mn |
| Mar 31, 2024 | 611.02 Mn |
| Dec 31, 2023 | 591.52 Mn |
| Sep 30, 2023 | 454.18 Mn |
| Jun 30, 2023 | 367.48 Mn |
| Mar 31, 2023 | 606.31 Mn |
| Dec 31, 2022 | 625.07 Mn |
| Sep 30, 2022 | 687.22 Mn |
| Jun 30, 2022 | 577.12 Mn |
| Mar 31, 2022 | 1.14 Bn |
| Dec 31, 2021 | 1.09 Bn |
API Access
Castle Biosciences Market Capitalization API
Pull this series into your own models, spreadsheets and apps with the Business Quant
Historical Metrics API. The request below matches the chart above — change the
frequency, period or values and it follows. Swap YOUR_API_KEY for your own key.
https://data.businessquant.com/historic?slug=market-capitalization&ticker=CSTL&period=max&api_key=YOUR_API_KEYimport requests
url = "https://data.businessquant.com/historic"
params = {"slug": "market-capitalization", "ticker": "CSTL", "period": "max", "api_key": "YOUR_API_KEY"}
data = requests.get(url, params=params).json()const res = await fetch("https://data.businessquant.com/historic?slug=market-capitalization&ticker=CSTL&period=max&api_key=YOUR_API_KEY");
const data = await res.json();