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Castle BiosciencesCSTL +1.19%79 3-1 Month Momentum % is -2.72% as of Jul. 28, 2026. GuruFocus rates CSTL with a GF Score™ of 79/100 and a GF Value™ of $29.22 (Modestly Undervalued). The stock has 4 warning signs investors should review. Among 214 Medical Diagnostics & Research companies, Castle Biosciences ranks better than 54.21% on this metric.
3-1 Month Momentum % is the total return of the stock from 3-month ago to 1-month ago. As of today (2026-07-28), Castle Biosciences's 3-1 Month Momentum % is -2.72%.
The industry rank for Castle Biosciences's 3-1 Month Momentum % or its related term are showing as below:
CSTL's 3-1 Month Momentum % is ranked better than 54.21% of 214
companies
in the Medical Diagnostics & Research industry
Industry Median: -3.855
vs CSTL: -2.72
Momentum investing is a trading strategy in which investors buy securities that are rising and sell before the prices start to go back down. The 3-1 Month Momentum % measures the total return to a stock over the past three months, but ignores the previous month.
The reason why the most recent month’s return dropped related to the short-term reversal effect associated with momentum. There is an academic finding that short-term momentum actually has a reversal effect, whereby the previous winners (measured over the past months) do poorly the next month, while the previous losers do well the next month. In order to eliminate the short-term reversal effect, the previous month return was not included in this calculation.
Castle Biosciences 3-1 Month Momentum % Related Terms
CSTL vs OPK, FLGT, MYGN: 3-1 Month Momentum % Comparison
For the Diagnostics & Research subindustry, Castle Biosciences's 3-1 Month Momentum %, along with its competitors' market caps and 3-1 Month Momentum % data, can be viewed below:
* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.
Castle Biosciences 3-1 Month Momentum % vs Medical Diagnostics & Research Industry
For the Medical Diagnostics & Research industry and Healthcare sector, Castle Biosciences's 3-1 Month Momentum % distribution charts can be found below:
* The bar in red indicates where Castle Biosciences's 3-1 Month Momentum % falls into.
* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD. * For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.
Castle Biosciences (CSTL) has a 3-1 Month Momentum % of -2.72% as of Jul. 28, 2026. 3-1 Month Momentum measures the total return of the stock from 3-month ago to 1-month ago. View historical data on Castle Biosciences and its competitors. According to the industry distribution chart, Castle Biosciences ranks #98 out of 214 companies in the Medical Diagnostics & Research industry, placing it in the top 45.8%.
Is Castle Biosciences' 3-1 Month Momentum % too high?
Castle Biosciences' current 3-1 Month Momentum % is -2.72%. Based on the distribution chart, Castle Biosciences ranks #98 out of 214 companies in the Medical Diagnostics & Research industry, which is above the industry midpoint. Overall, Castle Biosciences has a GF Score™ of 79/100 and is considered Modestly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Castle Biosciences' 3-1 Month Momentum % compare to OPK and FLGT?
According to the Medical Diagnostics & Research industry distribution chart, Castle Biosciences ranks #98 out of 214 companies for 3-1 Month Momentum %. This puts Castle Biosciences in the upper half of its industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good 3-1 Month Momentum % for a Medical Diagnostics & Research company?
A good 3-1 Month Momentum % depends on the Medical Diagnostics & Research industry context. However, 3-1 Month Momentum % should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high 3-1 Month Momentum % mean?
A high 3-1 Month Momentum % can signal that a stock is expensive relative to its fundamentals. 3-1 Month Momentum measures the total return of the stock from 3-month ago to 1-month ago. View historical data on Castle Biosciences and its competitors. Castle Biosciences's current 3-1 Month Momentum % is -2.72%. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Castle Biosciences stock overvalued right now?
Based on GuruFocus' analysis, Castle Biosciences (CSTL) is currently considered Modestly Undervalued. The stock's GF Value™ is $29.22, compared to a current price of $24.75 — trading 15.3% below its estimated fair value. The current 3-1 Month Momentum % is -2.72%. Castle Biosciences' overall GF Score™ is 79/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is 3-1 Month Momentum % calculated?
3-1 Month Momentum % is calculated from a company's financial statements. For Castle Biosciences (CSTL), the current 3-1 Month Momentum % is -2.72% as of Jul. 28, 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.
Is Castle Biosciences (CSTL) Overvalued in 2026?
Based on GuruFocus' analysis, Castle Biosciences stock appears to be undervalued.
The current stock price of $24.75 is trading 15.3% below its estimated GF Value™ of $29.22.
GuruFocus considers Castle Biosciences to be Modestly Undervalued.
Key valuation signals for CSTL:
3-1 Month Momentum %: -2.72%
GF Value™: $29.22 vs. price of $24.75 (15.3% below fair value)
No single metric tells the full story. See the CSTL stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Castle Biosciences Inc is a molecular diagnostics company. The group provides test solutions for the diagnosis and treatment of dermatologic cancers, Barrett's esophagus (BE), and uveal melanoma. The product portfolio of the company includes DecisionDx-Melanoma, a risk stratification gene expression profile (GEP) test; DecisionDx-SCC, a risk stratification test for cutaneous squamous cell carcinoma; MyPath Melanoma, a diagnostic GEP test for use in patients with difficult-to-diagnose melanocytic lesions; and TissueCypher, a test to predict future development of progression of high-grade dysplasia and/or esophageal cancer. The company derives revenues through the delivery of test reports for its molecular diagnostic tests.
79GF Score
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