Castle Biosciences (CSTL) EPS (Basic) (2018 - 2026)
Castle Biosciences' (CSTL) quarterly EPS (Basic) came in at -$0.07 in Q2 2026, down 143.0% year-over-year from $0.16 in Q2 2025, and up 86.05% quarter-over-quarter from -$0.49 in Q1 2026.
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Castle Biosciences (CSTL) EPS (Basic) (2018 - 2026) Analysis & Trends
Castle Biosciences has disclosed EPS (Basic) across 9 years of filings, most recently posting -$0.07 for Q2 2026.
- In Q2 2026, EPS (Basic) fell 143.0% year-over-year to -$0.07; the TTM figure through Jun 2026 stood at -$0.64 (down 95.79% YoY), while the FY2025 annual figure was -$0.83, down 226.88% from the prior year.
- EPS (Basic) came in at -$0.07 for Q2 2026 at Castle Biosciences, up from -$0.49 in the prior quarter.
- In the past five years, EPS (Basic) ranged from a high of $0.35 in Q4 2024 to a low of -$1.1 in Q1 2023.
- Average EPS (Basic) over 5 years is -$0.3, with a median of -$0.09 recorded in 2024.
- Year-over-year, EPS (Basic) sank 1010.87% in 2023 and surged 458.67% in 2024.
- Over 5 years, EPS (Basic) stood at -$0.79 in 2022, then surged by 87.84% to -$0.1 in 2023, then surged by 458.67% to $0.35 in 2024, then plunged by 123.3% to -$0.08 in 2025, then increased by 15.77% to -$0.07 in 2026.
- Per Business Quant data, the three most recent EPS (Basic) figures were -$0.07 in Q2 2026, -$0.49 in Q1 2026, and -$0.08 in Q4 2025.
Peer Set
Peer Comparison
| # | Company | Market Cap | Enterprise Value | Gross Profit (Qtr) | EPS (Basic) (Qtr) |
|---|---|---|---|---|---|
| 1 | Natera | 53.05 Bn | 51.95 Bn | 486.15 Mn | -0.47 |
| 2 | Quest Diagnostics | 27.19 Bn | 26.87 Bn | 1.03 Bn | 2.92 |
| 3 | Labcorp Holdings | 25.93 Bn | 25.81 Bn | 1.11 Bn | 3.66 |
| 4 | Guardant Health | 23.97 Bn | 22.91 Bn | 219.03 Mn | -0.90 |
| 5 | Tempus AI | 13.64 Bn | 12.82 Bn | 274.25 Mn | 0.05 |
| 6 | Caris Life Sciences | 8.47 Bn | 7.68 Bn | 182.38 Mn | 0.00 |
| 7 | Sotera Health | 5.35 Bn | 4.99 Bn | 177.96 Mn | 0.19 |
| 8 | BillionToOne | 4.96 Bn | 4.41 Bn | 77.11 Mn | 0.17 |
| 9 | Adaptive Biotechnologies | 4.55 Bn | 4.21 Bn | 51.39 Mn | -0.10 |
| 10 | Castle Biosciences | 1.08 Bn | 811.36 Mn | 79.85 Mn | -0.07 |
Historic Data
Download Data
Historic Data
| Date | Value |
|---|---|
| Jun 30, 2026 | -0.07 |
| Mar 31, 2026 | -0.49 |
| Dec 31, 2025 | -0.08 |
| Sep 30, 2025 | -0.02 |
| Jun 30, 2025 | 0.16 |
| Mar 31, 2025 | -0.90 |
| Dec 31, 2024 | 0.35 |
| Sep 30, 2024 | 0.08 |
| Jun 30, 2024 | 0.32 |
| Mar 31, 2024 | -0.09 |
| Dec 31, 2023 | -0.10 |
| Sep 30, 2023 | -0.26 |
| Jun 30, 2023 | -0.70 |
| Mar 31, 2023 | -1.10 |
| Dec 31, 2022 | -0.79 |
| Sep 30, 2022 | -0.77 |
| Jun 30, 2022 | -0.06 |
| Mar 31, 2022 | -0.97 |
| Dec 31, 2021 | -0.26 |
| Sep 30, 2021 | -0.47 |
API Access
Castle Biosciences EPS (Basic) 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=eps-basic&ticker=CSTL&period=max&api_key=YOUR_API_KEYimport requests
url = "https://data.businessquant.com/historic"
params = {"slug": "eps-basic", "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=eps-basic&ticker=CSTL&period=max&api_key=YOUR_API_KEY");
const data = await res.json();