Castle Biosciences (CSTL) Retained Earnings (2018 - 2026)
Castle Biosciences' (CSTL) quarterly Retained Earnings came in at $711.1 million in Q2 2026, up 5.08% year-over-year from $676.8 million in Q2 2025, and up 1.55% quarter-over-quarter from $700.3 million in Q1 2026.
Castle Biosciences (CSTL) Retained Earnings (2018 - 2026) Analysis & Trends
Castle Biosciences has disclosed Retained Earnings across 9 years of filings, most recently posting $711.1 million for Q2 2026.
- In Q2 2026, Retained Earnings rose 5.08% year-over-year to $711.1 million; the TTM figure through Jun 2026 stood at $711.1 million (up 5.08% YoY), while the FY2025 annual figure was $694.9 million, up 5.97% from the prior year.
- Retained Earnings came in at $711.1 million for Q2 2026 at Castle Biosciences, up from $700.3 million in the prior quarter.
- In the past five years, Retained Earnings ranged from a high of $711.1 million in Q2 2026 to a low of $515.7 million in Q1 2022.
- Average Retained Earnings over 5 years is $624.8 million, with a median of $629.7 million recorded in 2024.
- Year-over-year, Retained Earnings climbed 11.57% in 2023 and rose 5.08% in 2026.
- Over 5 years, Retained Earnings stood at $560.4 million in 2022, then gained by 8.76% to $609.5 million in 2023, then rose by 7.58% to $655.7 million in 2024, then rose by 5.97% to $694.9 million in 2025, then climbed by 2.34% to $711.1 million in 2026.
- Per Business Quant data, the three most recent Retained Earnings figures were $711.1 million in Q2 2026, $700.3 million in Q1 2026, and $694.9 million in Q4 2025.
Peer Comparison
| # | Company | Market Cap | Enterprise Value | Gross Profit (Qtr) | Retained Earnings (Qtr) |
|---|---|---|---|---|---|
| 1 | Natera | 53.05 Bn | 51.95 Bn | 486.15 Mn | -2.93 Bn |
| 2 | Quest Diagnostics | 27.19 Bn | 26.87 Bn | 1.03 Bn | 10.37 Bn |
| 3 | Labcorp Holdings | 25.93 Bn | 25.81 Bn | 1.11 Bn | 8.70 Bn |
| 4 | Guardant Health | 23.97 Bn | 22.91 Bn | 219.03 Mn | -3.23 Bn |
| 5 | Tempus AI | 13.64 Bn | 12.82 Bn | 274.25 Mn | -2.52 Bn |
| 6 | Caris Life Sciences | 8.47 Bn | 7.68 Bn | 182.38 Mn | 3.14 Bn |
| 7 | Sotera Health | 5.35 Bn | 4.99 Bn | 177.96 Mn | 1.27 Bn |
| 8 | BillionToOne | 4.96 Bn | 4.41 Bn | 77.11 Mn | 787.32 Mn |
| 9 | Adaptive Biotechnologies | 4.55 Bn | 4.21 Bn | 51.39 Mn | 1.57 Bn |
| 10 | Castle Biosciences | 1.08 Bn | 811.36 Mn | 79.85 Mn | 711.12 Mn |
Historic Data
| Date | Value |
|---|---|
| Jun 30, 2026 | 711.12 Mn |
| Mar 31, 2026 | 700.26 Mn |
| Dec 31, 2025 | 694.86 Mn |
| Sep 30, 2025 | 688.73 Mn |
| Jun 30, 2025 | 676.76 Mn |
| Mar 31, 2025 | 666.12 Mn |
| Dec 31, 2024 | 655.70 Mn |
| Sep 30, 2024 | 650.27 Mn |
| Jun 30, 2024 | 636.02 Mn |
| Mar 31, 2024 | 623.45 Mn |
| Dec 31, 2023 | 609.48 Mn |
| Sep 30, 2023 | 601.62 Mn |
| Jun 30, 2023 | 587.77 Mn |
| Mar 31, 2023 | 575.37 Mn |
| Dec 31, 2022 | 560.41 Mn |
| Sep 30, 2022 | 551.88 Mn |
| Jun 30, 2022 | 541.67 Mn |
| Mar 31, 2022 | 515.70 Mn |
| Dec 31, 2021 | 505.48 Mn |
| Sep 30, 2021 | 499.05 Mn |
Castle Biosciences Retained Earnings 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=retained-earnings&ticker=CSTL&period=max&api_key=YOUR_API_KEY
import requests
url = "https://data.businessquant.com/historic"
params = {"slug": "retained-earnings", "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=retained-earnings&ticker=CSTL&period=max&api_key=YOUR_API_KEY");
const data = await res.json();