CSTL
Price
$23.64
Change
+$0.55 (+2.38%)
Updated
Sep 5, 01:59 PM (EDT)
Capitalization
669.8M
66 days until earnings call
NTRA
Price
$168.27
Change
+$1.71 (+1.03%)
Updated
Sep 5, 02:26 PM (EDT)
Capitalization
22.86B
61 days until earnings call
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CSTL vs NTRA

Header iconCSTL vs NTRA Comparison
Open Charts CSTL vs NTRABanner chart's image
Castle Biosciences
Price$23.64
Change+$0.55 (+2.38%)
Volume$200
Capitalization669.8M
Natera
Price$168.27
Change+$1.71 (+1.03%)
Volume$145
Capitalization22.86B
CSTL vs NTRA Comparison Chart in %
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CSTL
Daily Signalchanged days ago
Gain/Loss if bought
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NTRA
Daily Signalchanged days ago
Gain/Loss if bought
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CSTL vs. NTRA commentary
Sep 05, 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 StrongBuy.

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COMPARISON
Comparison
Sep 05, 2025
Stock price -- (CSTL: $23.09 vs. NTRA: $166.56)
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: 77% vs. NTRA: 66%
Market capitalization -- CSTL: $669.8M vs. NTRA: $22.86B
CSTL [@Medical Specialties] is valued at $669.8M. NTRA’s [@Medical Specialties] market capitalization is $22.86B. 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 $10.57B.

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 0 green FA rating(s).

  • CSTL’s FA Score: 0 green, 5 red.
  • NTRA’s FA Score: 0 green, 5 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 6 TA indicator(s) are bullish while NTRA’s TA Score has 6 bullish TA indicator(s).

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

Price Growth

CSTL (@Medical Specialties) experienced а -1.58% price change this week, while NTRA (@Medical Specialties) price change was -0.79% for the same time period.

The average weekly price growth across all stocks in the @Medical Specialties industry was +0.42%. For the same industry, the average monthly price growth was +6.99%, and the average quarterly price growth was +11.90%.

Reported Earning Dates

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

NTRA is expected to report earnings on Nov 05, 2025.

Industries' Descriptions

@Medical Specialties (+0.42% 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($22.9B) has a higher market cap than CSTL($670M). NTRA YTD gains are higher at: 5.218 vs. CSTL (-13.358). CSTL has higher annual earnings (EBITDA): 32.6M vs. NTRA (-211.86M). NTRA has more cash in the bank: 1.02B vs. CSTL (276M). CSTL has less debt than NTRA: CSTL (37.4M) vs NTRA (196M). NTRA has higher revenues than CSTL: NTRA (1.96B) vs CSTL (346M).
CSTLNTRACSTL / NTRA
Capitalization670M22.9B3%
EBITDA32.6M-211.86M-15%
Gain YTD-13.3585.218-256%
P/E Ratio30.24N/A-
Revenue346M1.96B18%
Total Cash276M1.02B27%
Total Debt37.4M196M19%
FUNDAMENTALS RATINGS
CSTL vs NTRA: Fundamental Ratings
CSTL
NTRA
OUTLOOK RATING
1..100
1920
VALUATION
overvalued / fair valued / undervalued
1..100
55
Fair valued
62
Fair valued
PROFIT vs RISK RATING
1..100
10040
SMR RATING
1..100
9296
PRICE GROWTH RATING
1..100
3942
P/E GROWTH RATING
1..100
100100
SEASONALITY SCORE
1..100
8585

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 (55) 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 (40) in the Biotechnology industry is somewhat better than the same rating for CSTL (100) in the null industry. This means that NTRA’s stock grew somewhat faster than CSTL’s over the last 12 months.

CSTL's SMR Rating (92) 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 (39) in the null industry is in the same range as NTRA (42) 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 (100) 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 2 days ago
87%
Bearish Trend 2 days ago
82%
Stochastic
ODDS (%)
Bearish Trend 2 days ago
90%
Bearish Trend 2 days ago
75%
Momentum
ODDS (%)
Bullish Trend 2 days ago
73%
Bullish Trend 2 days ago
83%
MACD
ODDS (%)
Bullish Trend 2 days ago
64%
Bullish Trend 2 days ago
78%
TrendWeek
ODDS (%)
Bullish Trend 2 days ago
80%
Bullish Trend 2 days ago
81%
TrendMonth
ODDS (%)
Bullish Trend 2 days ago
76%
Bullish Trend 2 days ago
81%
Advances
ODDS (%)
Bullish Trend 4 days ago
78%
Bullish Trend 4 days ago
80%
Declines
ODDS (%)
Bearish Trend 2 days ago
85%
Bearish Trend 2 days ago
80%
BollingerBands
ODDS (%)
Bearish Trend 2 days ago
89%
Bearish Trend 2 days ago
80%
Aroon
ODDS (%)
Bullish Trend 2 days ago
87%
Bullish Trend 2 days ago
80%
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CSTL
Daily Signalchanged days ago
Gain/Loss if bought
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NTRA
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 IMTH. These tickers have moved in lockstep 41% of the time. This A.I.-generated data suggests there is some statistical probability that if CSTL jumps, then IMTH could also see price increases.

1D
1W
1M
1Q
6M
1Y
5Y
Ticker /
NAME
Correlation
To CSTL
1D Price
Change %
CSTL100%
-0.47%
IMTH - CSTL
41%
Loosely correlated
+11.11%
NTRA - CSTL
39%
Loosely correlated
-0.58%
FLGT - CSTL
38%
Loosely correlated
-0.18%
TCMD - CSTL
37%
Loosely correlated
+1.36%
PACB - CSTL
36%
Loosely correlated
-1.59%
More

NTRA and

Correlation & Price change

A.I.dvisor indicates that over the last year, NTRA has been loosely correlated with VCYT. These tickers have moved in lockstep 56% of the time. This A.I.-generated data suggests there is some statistical probability that if NTRA jumps, then VCYT could also see price increases.

1D
1W
1M
1Q
6M
1Y
5Y
Ticker /
NAME
Correlation
To NTRA
1D Price
Change %
NTRA100%
-0.58%
VCYT - NTRA
56%
Loosely correlated
+2.94%
GH - NTRA
55%
Loosely correlated
-5.69%
ISRG - NTRA
54%
Loosely correlated
+3.02%
GKOS - NTRA
48%
Loosely correlated
-4.58%
TWST - NTRA
46%
Loosely correlated
-1.42%
More