CSTL
Price
$34.96
Change
-$3.98 (-10.22%)
Updated
Feb 4 closing price
Capitalization
1.02B
27 days until earnings call
Intraday BUY SELL Signals
FONR
Price
$18.52
Change
-$0.09 (-0.48%)
Updated
Feb 4 closing price
Capitalization
116.61M
Intraday BUY SELL Signals
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CSTL vs FONR

Header iconCSTL vs FONR Comparison
Open Charts CSTL vs FONRBanner chart's image
Castle Biosciences
Price$34.96
Change-$3.98 (-10.22%)
Volume$668.32K
Capitalization1.02B
Fonar
Price$18.52
Change-$0.09 (-0.48%)
Volume$136.27K
Capitalization116.61M
CSTL vs FONR Comparison Chart in %
CSTL
Daily Signal:
Gain/Loss:
FONR
Daily Signal:
Gain/Loss:
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VS
CSTL vs. FONR commentary
Feb 05, 2026

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 Hold and FONR is a StrongBuy.

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COMPARISON
Comparison
Feb 05, 2026
Stock price -- (CSTL: $34.96 vs. FONR: $18.52)
Brand notoriety: CSTL and FONR are both not notable
Both companies represent the Medical Specialties industry
Current volume relative to the 65-day Moving Average: CSTL: 177% vs. FONR: 146%
Market capitalization -- CSTL: $1.02B vs. FONR: $116.61M
CSTL [@Medical Specialties] is valued at $1.02B. FONR’s [@Medical Specialties] market capitalization is $116.61M. The market cap for tickers in the [@Medical Specialties] industry ranges from $3.82T to $0. The average market capitalization across the [@Medical Specialties] industry is $12.13B.

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 whileFONR’s FA Score has 1 green FA rating(s).

  • CSTL’s FA Score: 0 green, 5 red.
  • FONR’s FA Score: 1 green, 4 red.
According to our system of comparison, FONR is a better buy in the long-term than CSTL.

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 FONR’s TA Score has 6 bullish TA indicator(s).

  • CSTL’s TA Score: 5 bullish, 4 bearish.
  • FONR’s TA Score: 6 bullish, 4 bearish.
According to our system of comparison, FONR is a better buy in the short-term than CSTL.

Price Growth

CSTL (@Medical Specialties) experienced а -11.52% price change this week, while FONR (@Medical Specialties) price change was -0.75% for the same time period.

The average weekly price growth across all stocks in the @Medical Specialties industry was -3.97%. For the same industry, the average monthly price growth was -0.06%, and the average quarterly price growth was +20.79%.

Reported Earning Dates

CSTL is expected to report earnings on Mar 04, 2026.

Industries' Descriptions

@Medical Specialties (-3.97% 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.

SUMMARIES
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FUNDAMENTALS
Fundamentals
CSTL($1.02B) has a higher market cap than FONR($117M). CSTL has higher P/E ratio than FONR: CSTL (30.24) vs FONR (16.68). FONR YTD gains are higher at: -0.216 vs. CSTL (-10.129). CSTL has higher annual earnings (EBITDA): 24M vs. FONR (17.1M). CSTL has more cash in the bank: 288M vs. FONR (54.4M). CSTL has less debt than FONR: CSTL (37.1M) vs FONR (39.9M). CSTL has higher revenues than FONR: CSTL (344M) vs FONR (105M).
CSTLFONRCSTL / FONR
Capitalization1.02B117M872%
EBITDA24M17.1M140%
Gain YTD-10.129-0.2164,700%
P/E Ratio30.2416.68181%
Revenue344M105M328%
Total Cash288M54.4M529%
Total Debt37.1M39.9M93%
FUNDAMENTALS RATINGS
CSTL vs FONR: Fundamental Ratings
CSTL
FONR
OUTLOOK RATING
1..100
8260
VALUATION
overvalued / fair valued / undervalued
1..100
58
Fair valued
57
Fair valued
PROFIT vs RISK RATING
1..100
100100
SMR RATING
1..100
9185
PRICE GROWTH RATING
1..100
4147
P/E GROWTH RATING
1..100
9917
SEASONALITY SCORE
1..100
n/an/a

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.

FONR's Valuation (57) in the Medical Specialties industry is in the same range as CSTL (58) in the null industry. This means that FONR’s stock grew similarly to CSTL’s over the last 12 months.

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

FONR's SMR Rating (85) in the Medical Specialties industry is in the same range as CSTL (91) in the null industry. This means that FONR’s stock grew similarly to CSTL’s over the last 12 months.

CSTL's Price Growth Rating (41) in the null industry is in the same range as FONR (47) in the Medical Specialties industry. This means that CSTL’s stock grew similarly to FONR’s over the last 12 months.

FONR's P/E Growth Rating (17) in the Medical Specialties industry is significantly better than the same rating for CSTL (99) in the null industry. This means that FONR’s stock grew significantly faster than CSTL’s over the last 12 months.

TECHNICAL ANALYSIS
Technical Analysis
CSTLFONR
RSI
ODDS (%)
Bullish Trend 1 day ago
90%
Bearish Trend 1 day ago
66%
Stochastic
ODDS (%)
Bullish Trend 1 day ago
82%
Bullish Trend 1 day ago
53%
Momentum
ODDS (%)
Bearish Trend 1 day ago
88%
Bearish Trend 1 day ago
58%
MACD
ODDS (%)
Bearish Trend 1 day ago
87%
Bearish Trend 1 day ago
60%
TrendWeek
ODDS (%)
Bearish Trend 1 day ago
83%
Bearish Trend 1 day ago
61%
TrendMonth
ODDS (%)
Bearish Trend 1 day ago
79%
Bullish Trend 1 day ago
52%
Advances
ODDS (%)
Bullish Trend 4 days ago
78%
Bullish Trend 9 days ago
57%
Declines
ODDS (%)
Bearish Trend 1 day ago
82%
Bearish Trend 1 day ago
64%
BollingerBands
ODDS (%)
Bullish Trend 1 day ago
83%
Bullish Trend 1 day ago
58%
Aroon
ODDS (%)
Bullish Trend 4 days ago
88%
Bullish Trend 1 day ago
45%
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CSTL
Daily Signal:
Gain/Loss:
FONR
Daily Signal:
Gain/Loss:
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CSTL and

Correlation & Price change

A.I.dvisor indicates that over the last year, CSTL has been loosely correlated with NTRA. These tickers have moved in lockstep 60% of the time. This A.I.-generated data suggests there is some statistical probability that if CSTL jumps, then NTRA could also see price increases.

1D
1W
1M
1Q
6M
1Y
5Y
Ticker /
NAME
Correlation
To CSTL
1D Price
Change %
CSTL100%
-10.22%
NTRA - CSTL
60%
Loosely correlated
-9.69%
ILMN - CSTL
58%
Loosely correlated
-0.92%
BNR - CSTL
54%
Loosely correlated
-1.82%
TCMD - CSTL
50%
Loosely correlated
-2.09%
CDNA - CSTL
48%
Loosely correlated
-8.24%
More

FONR and

Correlation & Price change

A.I.dvisor indicates that over the last year, FONR has been loosely correlated with ILMN. These tickers have moved in lockstep 42% of the time. This A.I.-generated data suggests there is some statistical probability that if FONR jumps, then ILMN could also see price increases.

1D
1W
1M
1Q
6M
1Y
5Y
Ticker /
NAME
Correlation
To FONR
1D Price
Change %
FONR100%
-0.48%
ILMN - FONR
42%
Loosely correlated
-0.92%
BNR - FONR
41%
Loosely correlated
-1.82%
GH - FONR
38%
Loosely correlated
-6.10%
CSTL - FONR
36%
Loosely correlated
-10.22%
GRAL - FONR
34%
Loosely correlated
-6.20%
More