CSTL
Price
$24.01
Change
+$0.55 (+2.34%)
Updated
Aug 29 closing price
Capitalization
696.49M
69 days until earnings call
STAA
Price
$27.36
Change
-$0.04 (-0.15%)
Updated
Aug 29 closing price
Capitalization
1.36B
58 days until earnings call
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CSTL vs STAA

Header iconCSTL vs STAA Comparison
Open Charts CSTL vs STAABanner chart's image
Castle Biosciences
Price$24.01
Change+$0.55 (+2.34%)
Volume$518.81K
Capitalization696.49M
STAAR Surgical
Price$27.36
Change-$0.04 (-0.15%)
Volume$506.41K
Capitalization1.36B
CSTL vs STAA Comparison Chart in %
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CSTL
Daily Signalchanged days ago
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STAA
Daily Signalchanged days ago
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CSTL vs. STAA commentary
Sep 02, 2025

To compare these two companies we present long-term analysis, their fundamental ratings and make comparative short-term technical analysis which are presented below. The conclusion is CSTL is a Buy and STAA is a Hold.

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COMPARISON
Comparison
Sep 02, 2025
Stock price -- (CSTL: $24.01 vs. STAA: $27.36)
Brand notoriety: CSTL and STAA are both not notable
CSTL represents the Medical Specialties, while STAA is part of the Pharmaceuticals: Other industry
Current volume relative to the 65-day Moving Average: CSTL: 93% vs. STAA: 28%
Market capitalization -- CSTL: $696.49M vs. STAA: $1.36B
CSTL [@Medical Specialties] is valued at $696.49M. STAA’s [@Pharmaceuticals: Other] market capitalization is $1.36B. The market cap for tickers in the [@Medical Specialties] industry ranges from $3.82T to $0. The market cap for tickers in the [@Pharmaceuticals: Other] industry ranges from $169.67B to $0. The average market capitalization across the [@Medical Specialties] industry is $10.68B. The average market capitalization across the [@Pharmaceuticals: Other] industry is $10.98B.

Long-Term Analysis

It is best to consider a long-term outlook for a ticker by using Fundamental Analysis (FA) ratings. The rating of 1 to 100, where 1 is best and 100 is worst, is divided into thirds. The first third (a green rating of 1-33) indicates that the ticker is undervalued; the second third (a grey number between 34 and 66) means that the ticker is valued fairly; and the last third (red number of 67 to 100) reflects that the ticker is undervalued. We use an FA Score to show how many ratings show the ticker to be undervalued (green) or overvalued (red).

CSTL’s FA Score shows that 0 FA rating(s) are green whileSTAA’s FA Score has 0 green FA rating(s).

  • CSTL’s FA Score: 0 green, 5 red.
  • STAA’s FA Score: 0 green, 5 red.
According to our system of comparison, CSTL is a better buy in the long-term than STAA.

Short-Term Analysis

It is best to consider a short-term outlook for a ticker by using Technical Analysis (TA) indicators. We use Odds of Success as the percentage of outcomes which confirm successful trade signals in the past.

If the Odds of Success (the likelihood of the continuation of a trend) for each indicator are greater than 50%, then the generated signal is confirmed. A green percentage from 90% to 51% indicates that the ticker is in a bullish trend. A red percentage from 90% - 51% indicates that the ticker is in a bearish trend. All grey percentages are below 50% and are considered not to confirm the trend signal.

CSTL’s TA Score shows that 5 TA indicator(s) are bullish while STAA’s TA Score has 4 bullish TA indicator(s).

  • CSTL’s TA Score: 5 bullish, 5 bearish.
  • STAA’s TA Score: 4 bullish, 5 bearish.
According to our system of comparison, CSTL is a better buy in the short-term than STAA.

Price Growth

CSTL (@Medical Specialties) experienced а +15.21% price change this week, while STAA (@Pharmaceuticals: Other) price change was -1.76% for the same time period.

The average weekly price growth across all stocks in the @Medical Specialties industry was -0.46%. For the same industry, the average monthly price growth was +7.37%, and the average quarterly price growth was +8.13%.

The average weekly price growth across all stocks in the @Pharmaceuticals: Other industry was +0.93%. For the same industry, the average monthly price growth was +6.00%, and the average quarterly price growth was +26.47%.

Reported Earning Dates

CSTL is expected to report earnings on Nov 10, 2025.

STAA is expected to report earnings on Oct 29, 2025.

Industries' Descriptions

@Medical Specialties (-0.46% weekly)

Medical specialties are companies that make equipment used by the health care industry. Equipment manufactured and distributed by these companies include dialysis machines, blood analysis equipment, surgical equipment, dental instruments, and diagnostic tools, among other items. Large companies typically aim to produce and distribute high-quality products across a broad market spectrum. Smaller firms are more likely to specialize in a particular market segment. Due to the industry’s close association with medical treatments, they typically have low sensitivity to macroeconomic fluctuations. Within this industry, Abbott Laboratories, Medtronic Plc and Thermo Fisher Scientific Inc. are some of the companies with multi-billion market capitalizations in the U.S. stock markets.

@Pharmaceuticals: Other (+0.93% weekly)

Pharmaceuticals (Other) comprise companies that are involved in the discovery, development or manufacturing of therapeutic and preventative medicines. They often collaborate with or acquire other pharmaceutical/healthcare firms. Examples of companies in this segment include Bausch Health Companies Inc., Icon Plc and Perrigo Company Plc.

SUMMARIES
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FUNDAMENTALS
Fundamentals
STAA($1.36B) has a higher market cap than CSTL($696M). STAA has higher P/E ratio than CSTL: STAA (49.73) vs CSTL (30.24). STAA YTD gains are higher at: 12.639 vs. CSTL (-9.906). CSTL has higher annual earnings (EBITDA): 32.6M vs. STAA (-73.24M). CSTL has more cash in the bank: 276M vs. STAA (190M). CSTL has less debt than STAA: CSTL (37.4M) vs STAA (40.5M). CSTL has higher revenues than STAA: CSTL (346M) vs STAA (224M).
CSTLSTAACSTL / STAA
Capitalization696M1.36B51%
EBITDA32.6M-73.24M-45%
Gain YTD-9.90612.639-78%
P/E Ratio30.2449.7361%
Revenue346M224M154%
Total Cash276M190M145%
Total Debt37.4M40.5M92%
FUNDAMENTALS RATINGS
CSTL vs STAA: Fundamental Ratings
CSTL
STAA
OUTLOOK RATING
1..100
5050
VALUATION
overvalued / fair valued / undervalued
1..100
54
Fair valued
84
Overvalued
PROFIT vs RISK RATING
1..100
100100
SMR RATING
1..100
9296
PRICE GROWTH RATING
1..100
3837
P/E GROWTH RATING
1..100
10090
SEASONALITY SCORE
1..100
8550

Tickeron ratings are formulated such that a rating of 1 designates the most successful stocks in a given industry, while a rating of 100 points to the least successful stocks for that industry.

CSTL's Valuation (54) in the null industry is in the same range as STAA (84) in the Medical Specialties industry. This means that CSTL’s stock grew similarly to STAA’s over the last 12 months.

CSTL's Profit vs Risk Rating (100) in the null industry is in the same range as STAA (100) in the Medical Specialties industry. This means that CSTL’s stock grew similarly to STAA’s over the last 12 months.

CSTL's SMR Rating (92) in the null industry is in the same range as STAA (96) in the Medical Specialties industry. This means that CSTL’s stock grew similarly to STAA’s over the last 12 months.

STAA's Price Growth Rating (37) in the Medical Specialties industry is in the same range as CSTL (38) in the null industry. This means that STAA’s stock grew similarly to CSTL’s over the last 12 months.

STAA's P/E Growth Rating (90) in the Medical Specialties industry is in the same range as CSTL (100) in the null industry. This means that STAA’s stock grew similarly to CSTL’s over the last 12 months.

TECHNICAL ANALYSIS
Technical Analysis
CSTLSTAA
RSI
ODDS (%)
Bearish Trend 4 days ago
84%
Bearish Trend 4 days ago
86%
Stochastic
ODDS (%)
Bearish Trend 4 days ago
90%
Bullish Trend 4 days ago
64%
Momentum
ODDS (%)
Bullish Trend 4 days ago
81%
Bearish Trend 4 days ago
82%
MACD
ODDS (%)
Bullish Trend 4 days ago
76%
Bearish Trend 4 days ago
87%
TrendWeek
ODDS (%)
Bullish Trend 4 days ago
80%
Bearish Trend 4 days ago
83%
TrendMonth
ODDS (%)
Bullish Trend 4 days ago
75%
Bullish Trend 4 days ago
73%
Advances
ODDS (%)
Bullish Trend 4 days ago
79%
Bullish Trend 19 days ago
74%
Declines
ODDS (%)
Bearish Trend 13 days ago
85%
Bearish Trend 4 days ago
86%
BollingerBands
ODDS (%)
Bearish Trend 4 days ago
85%
Bearish Trend 4 days ago
87%
Aroon
ODDS (%)
Bearish Trend 4 days ago
81%
Bullish Trend 4 days ago
70%
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CSTL
Daily Signalchanged days ago
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STAA
Daily Signalchanged days ago
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CSTL and

Correlation & Price change

A.I.dvisor indicates that over the last year, CSTL has been loosely correlated with TCMD. These tickers have moved in lockstep 50% of the time. This A.I.-generated data suggests there is some statistical probability that if CSTL jumps, then TCMD could also see price increases.

1D
1W
1M
1Q
6M
1Y
5Y
Ticker /
NAME
Correlation
To CSTL
1D Price
Change %
CSTL100%
+2.34%
TCMD - CSTL
50%
Loosely correlated
+1.06%
NTRA - CSTL
39%
Loosely correlated
+0.22%
FLGT - CSTL
38%
Loosely correlated
+0.64%
OFIX - CSTL
38%
Loosely correlated
+1.63%
GH - CSTL
37%
Loosely correlated
+4.58%
More

STAA and

Correlation & Price change

A.I.dvisor indicates that over the last year, STAA has been loosely correlated with XRAY. These tickers have moved in lockstep 53% of the time. This A.I.-generated data suggests there is some statistical probability that if STAA jumps, then XRAY could also see price increases.

1D
1W
1M
1Q
6M
1Y
5Y
Ticker /
NAME
Correlation
To STAA
1D Price
Change %
STAA100%
-0.15%
XRAY - STAA
53%
Loosely correlated
-0.14%
WST - STAA
44%
Loosely correlated
+0.61%
OFIX - STAA
38%
Loosely correlated
+1.63%
CSTL - STAA
38%
Loosely correlated
+2.34%
IQV - STAA
37%
Loosely correlated
+1.10%
More