CSTL Stock Analysis

Castle Biosciences Inc
HEALTHCARE DIAGNOSTICS & RESEARCH

Back to Winners View Yahoo Finance Chart Buy on the Dip
Strong Caution Mixed Weak Unavailable
StockValueFinder Grade
F
41.29 / 100
Weak
Confidence: High (80.0%) Coverage: 80.0%
Business Quality 10.2
Financial Strength 49.7
Earnings & Growth 35.8
Valuation 68.8
Market Strength 52.7
The grade combines Business Quality, Financial Strength, Earnings & Growth, Valuation, and Market Strength. Rating and Trend remain separate signals.
Rating AVOID
Avoid
The screening rules are warning against this setup.
Rating is the simple decision label from the screening rules.
Trend NEUTRAL / WATCH
Watch
The trend is interesting but needs confirmation.
Trend shows whether price action is helping or hurting the setup.
P/E Ratio -38.92
Not Meaningful
Negative or missing earnings make P/E hard to use.
P/E shows how much investors pay for each dollar of earnings.
ROIC -4.76%
Poor
Negative ROIC suggests capital is not being used profitably.
ROIC measures how efficiently capital turns into profit.
Debt Payback 0.34 yrs
Excellent
Under 1 year is very strong debt flexibility.
Debt payback estimates how quickly debt could be covered.
Interest Coverage -497.79x
Poor
Negative coverage means earnings are not covering interest costs.
Interest coverage shows how easily earnings cover interest costs.
Price $33.08
Market Price
Price alone is not a buy or sell signal.
Price should be judged with valuation, quality, and trend.
Last updated: 2026-10-25 21:48:47

Performance Overview

Trailing adjusted-close returns as of 2026-07-02. Benchmark is SPY.

YTD Return

CSTL -38.02%
SPY +9.80%

1-Year Return

CSTL +20.49%
SPY +21.37%

3-Year Return

CSTL +75.73%
SPY +74.40%

5-Year Return

CSTL -66.01%
SPY +83.76%

Returns are calculated from adjusted close prices and may differ from broker or research-site totals depending on data source, dividend handling, benchmark choice, and latest available trading date.

Legacy Screening Checks

This page uses cached SQL data from the latest StockValueFinder scan, so it loads fast without hitting Alpha Vantage on every page view.

43%
EPS Strength
FAIL

Looks for positive and improving earnings per share.

ROIC 10%+
FAIL

Looks for strong return on invested capital.

Interest Coverage 6+
FAIL

Checks whether operating income comfortably covers interest expense.

Debt Payback ≤ 3 Years
PASS

Checks whether free cash flow could pay down long-term debt quickly.

P/E 15 or Less
PASS

Checks whether valuation is reasonable under the current rule set.

Moving Average Trend
NEUTRAL / WATCH

Uses 20-day, 50-day, and 200-day moving averages for entry timing context.

A high StockValueFinder score is a research signal, not a guarantee. Strong companies can still fall during recessions, sector downturns, valuation resets, or company-specific events. Always review the business, risks, SEC filings, valuation, and your personal investment goals before buying.

Cached Technical Data

Moving average values from the latest stored scan.

20-Day MA33.94
50-Day MA33.69
200-Day MA28.62
MA Score3

Latest Published Stock Research

Research generated: October 23, 2026

CSTL Stock Analysis: Why Castle Biosciences Inc Scored 43% in Stock Value Finder

Castle Biosciences Inc (CSTL): An Educational StockValueFinder Review

Castle Biosciences Inc is a company operating within the Healthcare sector, specifically in the Diagnostics & Research industry. This article serves as an educational review of CSTL using the metrics and analysis provided by StockValueFinder.com. We will explore each metric in detail to understand why Castle Biosciences received its current score and rating.

Why the StockValueFinder Score Matters StockValueFinder provides a comprehensive evaluation of stocks based on various financial health indicators, aiming to help investors make informed decisions. CSTL's overall score is 43%, which translates to an "AVOID" recommendation from StockValueFinder. This score reflects a mix of positive and negative factors that influence the stock’s attractiveness.

EPS Strength and Consistency Earnings Per Share (EPS) measures how much profit a company generates per share of its common stock, indicating financial performance over time. For Castle Biosciences Inc., the EPS test was not passed by StockValueFinder. While specific EPS numbers are not provided, consistent positive EPS figures generally indicate strong earnings growth and profitability.

**Example:** A company with EPS growing from $1 to $2 over two years shows better consistency than one fluctuating between $0.50 and $3 during the same period.

ROIC and Capital Efficiency Return on Invested Capital (ROIC) measures how effectively a company uses its capital to generate profits. Castle Biosciences Inc has an ROIC of -4.76%, which is significantly below StockValueFinder's preferred range of 10% or higher. A negative ROIC suggests that the company’s invested capital is not generating returns, indicating poor use of resources.

**Example:** A company with a ROIC of 15% is using its capital more efficiently than one with only 4%, as it generates more profit per unit of capital employed.

Interest Coverage and Financial Safety Interest coverage measures a company's ability to pay the interest on outstanding debt. Castle Biosciences Inc did not pass this test, indicating that StockValueFinder prefers companies with higher interest coverage ratios (typically above 6). This metric is crucial for assessing financial health and risk of default.

**Example:** A company with an interest coverage ratio of 8x can comfortably cover its interest expenses compared to one with only 2x coverage, which might struggle if interest rates rise or earnings decline.

Debt Payback and Balance Sheet Discipline The debt payback period is the time required for a company to repay all its outstanding debt using current profits. Castle Biosciences Inc has a debt payback of 0.34 years, which StockValueFinder considers favorable as it prefers companies with a debt payback of three years or less.

**Example:** A company that can pay off its debts in 1.5 years is better positioned than one needing seven years, indicating stronger financial discipline and lower risk.

P/E Ratio and Valuation Discipline The Price-to-Earnings (P/E) ratio compares the market value of a stock to its earnings per share. Castle Biosciences Inc has a P/E ratio of -39.05, which StockValueFinder considers acceptable for valuation purposes. Typically, a lower P/E is more desirable as it suggests better value relative to earnings.

**Example:** A company with a P/E ratio of 8 may be considered undervalued compared to one trading at 40 times earnings, assuming similar business quality and growth prospects.

Moving Average Trend and Entry Timing StockValueFinder uses moving averages to gauge the trend direction for entry timing. CSTL's moving average signal is "NEUTRAL / WATCH," indicating a balanced view but advising caution. No specific entry signals are provided here.

**Example:** A stock with a strong upward trend on its moving averages might be considered a better buy candidate than one showing sideways movement or downward trends, assuming other financial metrics support the purchase decision.

Overall Financial Strengths and Weaknesses Castle Biosciences Inc demonstrates strengths in debt management through a short debt payback period and acceptable P/E valuation. However, it faces significant challenges with negative ROIC and poor EPS consistency, indicating inefficient capital use and potential earnings instability.

Risks and Limitations Investing in CSTL involves risks associated with its financial performance metrics. Negative ROIC suggests that the company is not generating sufficient returns on invested capital, which could hinder future growth prospects. Additionally, inconsistent EPS results make it difficult to predict stable profitability trends.

Educational Conclusion Understanding stock analysis through metrics like EPS consistency, ROIC, interest coverage, debt payback, and P/E valuation helps investors identify companies with strong financial health and potential for long-term value creation. Castle Biosciences Inc's current metrics suggest caution due to its poor performance in key areas despite some favorable aspects.

This article is for research and educational purposes only. It is not personal financial advice, investment advice, or a recommendation to buy or sell any security.


Research links: Yahoo Finance | Seeking Alpha | Finviz | SEC Filings

Research Attribution
Max Qwen II

Specializing in monetary economics, market incentives, and investment risk.

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