PRTA
Price
$9.20
Change
+$0.22 (+2.45%)
Updated
Jan 14 closing price
Capitalization
495.24M
28 days until earnings call
Intraday BUY SELL Signals
VYGR
Price
$4.13
Change
+$0.11 (+2.74%)
Updated
Jan 14 closing price
Capitalization
229.63M
54 days until earnings call
Intraday BUY SELL Signals
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PRTA vs VYGR

Header iconPRTA vs VYGR Comparison
Open Charts PRTA vs VYGRBanner chart's image
Prothena
Price$9.20
Change+$0.22 (+2.45%)
Volume$398.47K
Capitalization495.24M
Voyager Therapeutics
Price$4.13
Change+$0.11 (+2.74%)
Volume$1.73M
Capitalization229.63M
PRTA vs VYGR Comparison Chart in %
PRTA
Daily Signal:
Gain/Loss:
VYGR
Daily Signal:
Gain/Loss:
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VS
PRTA vs. VYGR commentary
Jan 15, 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 PRTA is a Hold and VYGR is a Hold.

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COMPARISON
Comparison
Jan 15, 2026
Stock price -- (PRTA: $9.20 vs. VYGR: $4.13)
Brand notoriety: PRTA and VYGR are both not notable
Both companies represent the Biotechnology industry
Current volume relative to the 65-day Moving Average: PRTA: 61% vs. VYGR: 361%
Market capitalization -- PRTA: $495.24M vs. VYGR: $229.63M
PRTA [@Biotechnology] is valued at $495.24M. VYGR’s [@Biotechnology] market capitalization is $229.63M. The market cap for tickers in the [@Biotechnology] industry ranges from $114.05B to $0. The average market capitalization across the [@Biotechnology] industry is $2.27B.

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).

PRTA’s FA Score shows that 0 FA rating(s) are green whileVYGR’s FA Score has 1 green FA rating(s).

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

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.

PRTA’s TA Score shows that 3 TA indicator(s) are bullish while VYGR’s TA Score has 5 bullish TA indicator(s).

  • PRTA’s TA Score: 3 bullish, 5 bearish.
  • VYGR’s TA Score: 5 bullish, 2 bearish.
According to our system of comparison, VYGR is a better buy in the short-term than PRTA.

Price Growth

PRTA (@Biotechnology) experienced а +0.77% price change this week, while VYGR (@Biotechnology) price change was +0.98% for the same time period.

The average weekly price growth across all stocks in the @Biotechnology industry was +0.31%. For the same industry, the average monthly price growth was +3.20%, and the average quarterly price growth was +43.69%.

Reported Earning Dates

PRTA is expected to report earnings on Feb 12, 2026.

VYGR is expected to report earnings on Mar 10, 2026.

Industries' Descriptions

@Biotechnology (+0.31% weekly)

Biotechnology involves genetic or protein engineering to produce medicines/therapies for treating and preventing ailments. The industry also provides crucial ingredients for diagnostics. This multi-billion-dollar industry is heavily focused on research and development, as companies attempt to continually come up with cutting-edge solutions for health. New discoveries for the treatment of diseases provide opportunities for growth for a company in this industry. Discoveries, however, must pass the regulatory approval from the U.S. Food and Drug Administration (FDA) before they can make it to markets. Amgen Inc., Gilead Sciences, Inc. and Celgene Corporation are examples of companies in this industry.

SUMMARIES
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FUNDAMENTALS
Fundamentals
PRTA($495M) has a higher market cap than VYGR($230M). VYGR YTD gains are higher at: 5.089 vs. PRTA (-3.665). VYGR has higher annual earnings (EBITDA): -136.19M vs. PRTA (-221.35M). PRTA has more cash in the bank: 331M vs. VYGR (45.1M). PRTA has less debt than VYGR: PRTA (9.08M) vs VYGR (38.4M). VYGR has higher revenues than PRTA: VYGR (31.3M) vs PRTA (11.8M).
PRTAVYGRPRTA / VYGR
Capitalization495M230M215%
EBITDA-221.35M-136.19M163%
Gain YTD-3.6655.089-72%
P/E RatioN/A6.00-
Revenue11.8M31.3M38%
Total Cash331M45.1M734%
Total Debt9.08M38.4M24%
FUNDAMENTALS RATINGS
PRTA vs VYGR: Fundamental Ratings
PRTA
VYGR
OUTLOOK RATING
1..100
5165
VALUATION
overvalued / fair valued / undervalued
1..100
71
Overvalued
47
Fair valued
PROFIT vs RISK RATING
1..100
100100
SMR RATING
1..100
9897
PRICE GROWTH RATING
1..100
6263
P/E GROWTH RATING
1..100
949
SEASONALITY SCORE
1..100
50n/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.

VYGR's Valuation (47) in the Biotechnology industry is in the same range as PRTA (71). This means that VYGR’s stock grew similarly to PRTA’s over the last 12 months.

VYGR's Profit vs Risk Rating (100) in the Biotechnology industry is in the same range as PRTA (100). This means that VYGR’s stock grew similarly to PRTA’s over the last 12 months.

VYGR's SMR Rating (97) in the Biotechnology industry is in the same range as PRTA (98). This means that VYGR’s stock grew similarly to PRTA’s over the last 12 months.

PRTA's Price Growth Rating (62) in the Biotechnology industry is in the same range as VYGR (63). This means that PRTA’s stock grew similarly to VYGR’s over the last 12 months.

VYGR's P/E Growth Rating (9) in the Biotechnology industry is significantly better than the same rating for PRTA (94). This means that VYGR’s stock grew significantly faster than PRTA’s over the last 12 months.

TECHNICAL ANALYSIS
Technical Analysis
PRTAVYGR
RSI
ODDS (%)
N/A
N/A
Stochastic
ODDS (%)
Bullish Trend 1 day ago
77%
Bullish Trend 1 day ago
79%
Momentum
ODDS (%)
Bearish Trend 4 days ago
84%
Bullish Trend 1 day ago
80%
MACD
ODDS (%)
Bullish Trend 1 day ago
64%
Bullish Trend 1 day ago
80%
TrendWeek
ODDS (%)
Bullish Trend 1 day ago
80%
Bullish Trend 1 day ago
82%
TrendMonth
ODDS (%)
Bearish Trend 1 day ago
87%
Bearish Trend 1 day ago
86%
Advances
ODDS (%)
Bullish Trend 1 day ago
76%
Bullish Trend 1 day ago
81%
Declines
ODDS (%)
Bearish Trend 11 days ago
84%
Bearish Trend 4 days ago
84%
BollingerBands
ODDS (%)
N/A
Bullish Trend 1 day ago
78%
Aroon
ODDS (%)
Bearish Trend 1 day ago
88%
Bearish Trend 3 days ago
90%
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PRTA
Daily Signal:
Gain/Loss:
VYGR
Daily Signal:
Gain/Loss:
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PRTA and

Correlation & Price change

A.I.dvisor indicates that over the last year, PRTA has been loosely correlated with RCKT. These tickers have moved in lockstep 62% of the time. This A.I.-generated data suggests there is some statistical probability that if PRTA jumps, then RCKT could also see price increases.

1D
1W
1M
1Q
6M
1Y
5Y
Ticker /
NAME
Correlation
To PRTA
1D Price
Change %
PRTA100%
+2.45%
RCKT - PRTA
62%
Loosely correlated
+4.21%
SVRA - PRTA
50%
Loosely correlated
+1.35%
AXON - PRTA
38%
Loosely correlated
-1.92%
DNLI - PRTA
37%
Loosely correlated
+0.88%
VYGR - PRTA
36%
Loosely correlated
+2.74%
More

VYGR and

Correlation & Price change

A.I.dvisor indicates that over the last year, VYGR has been loosely correlated with KURA. These tickers have moved in lockstep 55% of the time. This A.I.-generated data suggests there is some statistical probability that if VYGR jumps, then KURA could also see price increases.

1D
1W
1M
1Q
6M
1Y
5Y
Ticker /
NAME
Correlation
To VYGR
1D Price
Change %
VYGR100%
+2.74%
KURA - VYGR
55%
Loosely correlated
+1.63%
RGNX - VYGR
55%
Loosely correlated
-0.66%
XNCR - VYGR
54%
Loosely correlated
+3.66%
IMNM - VYGR
52%
Loosely correlated
+3.08%
IMTX - VYGR
50%
Loosely correlated
+4.80%
More