Castle Biosciences CSTL
NASDAQ CSTL
$34.74 -0.25 (-0.70%)
As of: Sep 22, 2026 · 10:48 AM EDT

Castle Biosciences (CSTL) Market Capitalization (2019 - 2026)

Castle Biosciences' (CSTL) quarterly Market Capitalization came in at $727.6 million in Q2 2026, up 22.95% year-over-year from $591.8 million in Q2 2025, and down 2.17% quarter-over-quarter from $743.8 million in Q1 2026.

Analysis

Castle Biosciences (CSTL) Market Capitalization (2019 - 2026) Analysis & Trends

Castle Biosciences has disclosed Market Capitalization across 8 years of filings, most recently posting $727.6 million for Q2 2026.

  • In Q2 2026, Market Capitalization rose 22.95% year-over-year to $727.6 million; the TTM figure through Jun 2026 stood at $727.6 million (up 22.95% YoY), while the FY2025 annual figure was $1.2 billion, up 52.13% from the prior year.
  • Market Capitalization came in at $727.6 million for Q2 2026 at Castle Biosciences, down from $743.8 million in the prior quarter.
  • In the past five years, Market Capitalization ranged from a high of $1.2 billion in Q4 2025 to a low of $367.5 million in Q2 2023.
  • Average Market Capitalization over 5 years is $682.4 million, with a median of $618.0 million recorded in 2022.
  • Year-over-year, Market Capitalization tumbled 68.72% in 2022 and soared 75.67% in 2024.
  • Over 5 years, Market Capitalization stood at $625.1 million in 2022, then slipped by 5.37% to $591.5 million in 2023, then increased by 28.33% to $759.1 million in 2024, then surged by 52.13% to $1.2 billion in 2025, then plunged by 36.99% to $727.6 million in 2026.
  • Per Business Quant data, the three most recent Market Capitalization figures were $727.6 million in Q2 2026, $743.8 million in Q1 2026, and $1.2 billion in Q4 2025.
Peer Set

Peer Comparison

# Company Market Cap Enterprise Value Gross Profit (Qtr)
1 Natera 53.05 Bn 51.95 Bn 486.15 Mn
2 Quest Diagnostics 27.19 Bn 26.87 Bn 1.03 Bn
3 Labcorp Holdings 25.93 Bn 25.81 Bn 1.11 Bn
4 Guardant Health 23.97 Bn 22.91 Bn 219.03 Mn
5 Tempus AI 13.64 Bn 12.82 Bn 274.25 Mn
6 Caris Life Sciences 8.47 Bn 7.68 Bn 182.38 Mn
7 Sotera Health 5.35 Bn 4.99 Bn 177.96 Mn
8 BillionToOne 4.96 Bn 4.41 Bn 77.11 Mn
9 Adaptive Biotechnologies 4.55 Bn 4.21 Bn 51.39 Mn
10 Castle Biosciences 1.08 Bn 811.36 Mn 79.85 Mn
Historic Data

Historic Data

Download Data
DateValue
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
Sep 30, 2021 1.68 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_KEY