CSTL
Price
$39.63
Change
-$0.46 (-1.15%)
Updated
Dec 26, 02:42 PM (EDT)
Capitalization
1.17B
68 days until earnings call
Intraday BUY SELL Signals
NTRA
Price
$233.62
Change
-$1.92 (-0.82%)
Updated
Dec 26, 04:59 PM (EDT)
Capitalization
32.85B
68 days until earnings call
Intraday BUY SELL Signals
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CSTL vs NTRA

Header iconCSTL vs NTRA Comparison
Open Charts CSTL vs NTRABanner chart's image
Castle Biosciences
Price$39.63
Change-$0.46 (-1.15%)
Volume$100
Capitalization1.17B
Natera
Price$233.62
Change-$1.92 (-0.82%)
Volume$311
Capitalization32.85B
CSTL vs NTRA Comparison Chart in %
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CSTL vs. NTRA commentary
Dec 26, 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 NTRA is a Buy.

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COMPARISON
Comparison
Dec 26, 2025
Stock price -- (CSTL: $40.09 vs. NTRA: $235.54)
Brand notoriety: CSTL and NTRA are both not notable
Both companies represent the Medical Specialties industry
Current volume relative to the 65-day Moving Average: CSTL: 31% vs. NTRA: 32%
Market capitalization -- CSTL: $1.17B vs. NTRA: $32.85B
CSTL [@Medical Specialties] is valued at $1.17B. NTRA’s [@Medical Specialties] market capitalization is $32.85B. 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 $12.46B.

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

  • CSTL’s FA Score: 0 green, 5 red.
  • NTRA’s FA Score: 1 green, 4 red.
According to our system of comparison, NTRA 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 3 TA indicator(s) are bullish while NTRA’s TA Score has 3 bullish TA indicator(s).

  • CSTL’s TA Score: 3 bullish, 5 bearish.
  • NTRA’s TA Score: 3 bullish, 4 bearish.
According to our system of comparison, NTRA is a better buy in the short-term than CSTL.

Price Growth

CSTL (@Medical Specialties) experienced а +1.08% price change this week, while NTRA (@Medical Specialties) price change was +4.46% for the same time period.

The average weekly price growth across all stocks in the @Medical Specialties industry was +1.56%. For the same industry, the average monthly price growth was -2.21%, and the average quarterly price growth was +21.69%.

Reported Earning Dates

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

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

Industries' Descriptions

@Medical Specialties (+1.56% 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
NTRA($32.8B) has a higher market cap than CSTL($1.17B). CSTL (50.432) and NTRA (48.793) have similar YTD gains . CSTL has higher annual earnings (EBITDA): 24M vs. NTRA (-268.34M). NTRA has more cash in the bank: 1.04B vs. CSTL (288M). CSTL has less debt than NTRA: CSTL (37.1M) vs NTRA (199M). NTRA has higher revenues than CSTL: NTRA (2.12B) vs CSTL (344M).
CSTLNTRACSTL / NTRA
Capitalization1.17B32.8B4%
EBITDA24M-268.34M-9%
Gain YTD50.43248.793103%
P/E Ratio30.24N/A-
Revenue344M2.12B16%
Total Cash288M1.04B28%
Total Debt37.1M199M19%
FUNDAMENTALS RATINGS
CSTL vs NTRA: Fundamental Ratings
CSTL
NTRA
OUTLOOK RATING
1..100
9282
VALUATION
overvalued / fair valued / undervalued
1..100
56
Fair valued
62
Fair valued
PROFIT vs RISK RATING
1..100
10032
SMR RATING
1..100
9196
PRICE GROWTH RATING
1..100
3740
P/E GROWTH RATING
1..100
99100
SEASONALITY SCORE
1..100
1550

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 (56) in the null industry is in the same range as NTRA (62) in the Biotechnology industry. This means that CSTL’s stock grew similarly to NTRA’s over the last 12 months.

NTRA's Profit vs Risk Rating (32) in the Biotechnology industry is significantly better than the same rating for CSTL (100) in the null industry. This means that NTRA’s stock grew significantly faster than CSTL’s over the last 12 months.

CSTL's SMR Rating (91) in the null industry is in the same range as NTRA (96) in the Biotechnology industry. This means that CSTL’s stock grew similarly to NTRA’s over the last 12 months.

CSTL's Price Growth Rating (37) in the null industry is in the same range as NTRA (40) in the Biotechnology industry. This means that CSTL’s stock grew similarly to NTRA’s over the last 12 months.

CSTL's P/E Growth Rating (99) in the null industry is in the same range as NTRA (100) in the Biotechnology industry. This means that CSTL’s stock grew similarly to NTRA’s over the last 12 months.

TECHNICAL ANALYSIS
Technical Analysis
CSTLNTRA
RSI
ODDS (%)
Bearish Trend 3 days ago
90%
Bearish Trend 3 days ago
73%
Stochastic
ODDS (%)
Bearish Trend 3 days ago
85%
Bearish Trend 3 days ago
81%
Momentum
ODDS (%)
Bullish Trend 3 days ago
79%
Bullish Trend 3 days ago
80%
MACD
ODDS (%)
Bearish Trend 3 days ago
85%
Bearish Trend 3 days ago
65%
TrendWeek
ODDS (%)
Bullish Trend 3 days ago
81%
Bullish Trend 3 days ago
82%
TrendMonth
ODDS (%)
Bullish Trend 3 days ago
76%
Bullish Trend 3 days ago
82%
Advances
ODDS (%)
Bullish Trend 10 days ago
78%
Bullish Trend 5 days ago
82%
Declines
ODDS (%)
Bearish Trend 3 days ago
82%
Bearish Trend 9 days ago
81%
BollingerBands
ODDS (%)
Bearish Trend 3 days ago
80%
N/A
Aroon
ODDS (%)
Bullish Trend 3 days ago
86%
Bullish Trend 3 days ago
79%
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CSTL
Daily Signal:
Gain/Loss:
NTRA
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 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%
-0.27%
TCMD - CSTL
50%
Loosely correlated
-0.58%
NTRA - CSTL
41%
Loosely correlated
+0.06%
GH - CSTL
38%
Loosely correlated
-0.12%
OFIX - CSTL
38%
Loosely correlated
+1.13%
PACB - CSTL
36%
Loosely correlated
+3.30%
More

NTRA and

Correlation & Price change

A.I.dvisor indicates that over the last year, NTRA has been loosely correlated with GH. These tickers have moved in lockstep 54% of the time. This A.I.-generated data suggests there is some statistical probability that if NTRA jumps, then GH could also see price increases.

1D
1W
1M
1Q
6M
1Y
5Y
Ticker /
NAME
Correlation
To NTRA
1D Price
Change %
NTRA100%
+0.06%
GH - NTRA
54%
Loosely correlated
-0.12%
ISRG - NTRA
53%
Loosely correlated
-0.03%
VCYT - NTRA
50%
Loosely correlated
-0.35%
TWST - NTRA
49%
Loosely correlated
-0.77%
GKOS - NTRA
47%
Loosely correlated
+0.40%
More