Castle Biosciences (CSTL) Price to Book (2019 - 2026)
Castle Biosciences' (CSTL) quarterly Price to Book came in at 1.55 in Q2 2026, up 19.12% year-over-year from 1.3 in Q2 2025, and down 3.96% quarter-over-quarter from 1.61 in Q1 2026.
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Analysis
Castle Biosciences (CSTL) Price to Book (2019 - 2026) Analysis & Trends
Castle Biosciences has disclosed Price to Book across 8 years of filings, most recently posting 1.55 for Q2 2026.
- In Q2 2026, Price to Book rose 19.12% year-over-year to 1.55; the TTM figure through Jun 2026 stood at 1.55 (up 19.12% YoY), while the FY2025 annual figure was 2.45, up 47.27% from the prior year.
- Price to Book came in at 1.55 for Q2 2026 at Castle Biosciences, down from 1.61 in the prior quarter.
- In the past five years, Price to Book ranged from a high of 2.88 in Q1 2022 to a low of 0.97 in Q2 2023.
- Average Price to Book over 5 years is 1.6, with a median of 1.53 recorded in 2024.
- Year-over-year, Price to Book tumbled 69.15% in 2022 and jumped 53.66% in 2024.
- Over 5 years, Price to Book stood at 1.57 in 2022, then declined by 3.46% to 1.51 in 2023, then advanced by 10.15% to 1.67 in 2024, then soared by 47.27% to 2.45 in 2025, then sank by 36.88% to 1.55 in 2026.
- Per Business Quant data, the three most recent Price to Book figures were 1.55 in Q2 2026, 1.61 in Q1 2026, and 2.45 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
Download Data
Historic Data
| Date | Value |
|---|---|
| Jun 30, 2026 | 1.55 |
| Mar 31, 2026 | 1.61 |
| Dec 31, 2025 | 2.45 |
| Sep 30, 2025 | 1.42 |
| Jun 30, 2025 | 1.30 |
| Mar 31, 2025 | 1.31 |
| Dec 31, 2024 | 1.67 |
| Sep 30, 2024 | 1.81 |
| Jun 30, 2024 | 1.42 |
| Mar 31, 2024 | 1.52 |
| Dec 31, 2023 | 1.51 |
| Sep 30, 2023 | 1.18 |
| Jun 30, 2023 | 0.97 |
| Mar 31, 2023 | 1.57 |
| Dec 31, 2022 | 1.57 |
| Sep 30, 2022 | 1.67 |
| Jun 30, 2022 | 1.37 |
| Mar 31, 2022 | 2.88 |
| Dec 31, 2021 | 2.64 |
| Sep 30, 2021 | 4.08 |
API Access
Castle Biosciences Price to Book 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=price-to-book&ticker=CSTL&period=max&api_key=YOUR_API_KEYimport requests
url = "https://data.businessquant.com/historic"
params = {"slug": "price-to-book", "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=price-to-book&ticker=CSTL&period=max&api_key=YOUR_API_KEY");
const data = await res.json();