ACGL
Price
$92.45
Change
+$0.61 (+0.66%)
Updated
Aug 20, 01:20 PM (EDT)
Capitalization
34.28B
70 days until earnings call
PRTA
Price
$8.49
Change
-$0.03 (-0.35%)
Updated
Aug 20, 01:49 PM (EDT)
Capitalization
458.63M
71 days until earnings call
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ACGL vs PRTA

Header iconACGL vs PRTA Comparison
Open Charts ACGL vs PRTABanner chart's image
Arch Capital Group
Price$92.45
Change+$0.61 (+0.66%)
Volume$1K
Capitalization34.28B
Prothena
Price$8.49
Change-$0.03 (-0.35%)
Volume$1.01K
Capitalization458.63M
ACGL vs PRTA Comparison Chart in %
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ACGL
Daily Signalchanged days ago
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PRTA
Daily Signalchanged days ago
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ACGL vs. PRTA commentary
Aug 20, 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 ACGL is a StrongBuy and PRTA is a Buy.

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COMPARISON
Comparison
Aug 20, 2025
Stock price -- (ACGL: $91.84 vs. PRTA: $8.52)
Brand notoriety: ACGL and PRTA are both not notable
ACGL represents the Multi-Line Insurance, while PRTA is part of the Biotechnology industry
Current volume relative to the 65-day Moving Average: ACGL: 54% vs. PRTA: 63%
Market capitalization -- ACGL: $34.28B vs. PRTA: $458.63M
ACGL [@Multi-Line Insurance] is valued at $34.28B. PRTA’s [@Biotechnology] market capitalization is $458.63M. The market cap for tickers in the [@Multi-Line Insurance] industry ranges from $634.15B to $0. The market cap for tickers in the [@Biotechnology] industry ranges from $100.19B to $0. The average market capitalization across the [@Multi-Line Insurance] industry is $33.33B. The average market capitalization across the [@Biotechnology] industry is $1.83B.

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).

ACGL’s FA Score shows that 2 FA rating(s) are green whilePRTA’s FA Score has 0 green FA rating(s).

  • ACGL’s FA Score: 2 green, 3 red.
  • PRTA’s FA Score: 0 green, 5 red.
According to our system of comparison, ACGL 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.

ACGL’s TA Score shows that 6 TA indicator(s) are bullish while PRTA’s TA Score has 3 bullish TA indicator(s).

  • ACGL’s TA Score: 6 bullish, 3 bearish.
  • PRTA’s TA Score: 3 bullish, 4 bearish.
According to our system of comparison, ACGL is a better buy in the short-term than PRTA.

Price Growth

ACGL (@Multi-Line Insurance) experienced а +4.63% price change this week, while PRTA (@Biotechnology) price change was +13.00% for the same time period.

The average weekly price growth across all stocks in the @Multi-Line Insurance industry was -1.35%. For the same industry, the average monthly price growth was +1.98%, and the average quarterly price growth was +22.46%.

The average weekly price growth across all stocks in the @Biotechnology industry was -0.43%. For the same industry, the average monthly price growth was +15.65%, and the average quarterly price growth was +21.56%.

Reported Earning Dates

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

PRTA is expected to report earnings on Oct 30, 2025.

Industries' Descriptions

@Multi-Line Insurance (-1.35% weekly)

A multi-line insurance contract bundles together exposures to risk and covers them under a single contract. For providers of such policies, the bundle is a potential risk diversification strategy since their exposure gets spread over several factors, which helps them mitigate a financial burden if a catastrophic event were to occur. Other potential benefits include getting more premiums from including more than one type of insurance in a bundle, and getting a competitive edge by procuring multiple insurance contracts with a customer. Examples of companies in this industry are Berkshire Hathaway (which owns several insurance companies), Chubb Limited, American International Group, Inc. and Sun Life Financial Inc.

@Biotechnology (-0.43% 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
ACGL($34.3B) has a higher market cap than PRTA($459M). ACGL YTD gains are higher at: -0.552 vs. PRTA (-38.484). ACGL has more cash in the bank: 10.3B vs. PRTA (371M). PRTA has less debt than ACGL: PRTA (9.78M) vs ACGL (2.73B). ACGL has higher revenues than PRTA: ACGL (18.6B) vs PRTA (10.3M).
ACGLPRTAACGL / PRTA
Capitalization34.3B459M7,473%
EBITDAN/A-248.1M-
Gain YTD-0.552-38.4841%
P/E Ratio9.50N/A-
Revenue18.6B10.3M180,583%
Total Cash10.3B371M2,776%
Total Debt2.73B9.78M27,891%
FUNDAMENTALS RATINGS
ACGL vs PRTA: Fundamental Ratings
ACGL
PRTA
OUTLOOK RATING
1..100
777
VALUATION
overvalued / fair valued / undervalued
1..100
79
Overvalued
57
Fair valued
PROFIT vs RISK RATING
1..100
13100
SMR RATING
1..100
100100
PRICE GROWTH RATING
1..100
5851
P/E GROWTH RATING
1..100
2294
SEASONALITY SCORE
1..100
5050

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.

PRTA's Valuation (57) in the Biotechnology industry is in the same range as ACGL (79) in the Property Or Casualty Insurance industry. This means that PRTA’s stock grew similarly to ACGL’s over the last 12 months.

ACGL's Profit vs Risk Rating (13) in the Property Or Casualty Insurance industry is significantly better than the same rating for PRTA (100) in the Biotechnology industry. This means that ACGL’s stock grew significantly faster than PRTA’s over the last 12 months.

ACGL's SMR Rating (100) in the Property Or Casualty Insurance industry is in the same range as PRTA (100) in the Biotechnology industry. This means that ACGL’s stock grew similarly to PRTA’s over the last 12 months.

PRTA's Price Growth Rating (51) in the Biotechnology industry is in the same range as ACGL (58) in the Property Or Casualty Insurance industry. This means that PRTA’s stock grew similarly to ACGL’s over the last 12 months.

ACGL's P/E Growth Rating (22) in the Property Or Casualty Insurance industry is significantly better than the same rating for PRTA (94) in the Biotechnology industry. This means that ACGL’s stock grew significantly faster than PRTA’s over the last 12 months.

TECHNICAL ANALYSIS
Technical Analysis
ACGLPRTA
RSI
ODDS (%)
N/A
Bearish Trend 2 days ago
89%
Stochastic
ODDS (%)
Bearish Trend 2 days ago
53%
Bearish Trend 2 days ago
87%
Momentum
ODDS (%)
Bullish Trend 2 days ago
60%
Bullish Trend 2 days ago
83%
MACD
ODDS (%)
Bullish Trend 2 days ago
61%
N/A
TrendWeek
ODDS (%)
Bullish Trend 2 days ago
65%
Bullish Trend 2 days ago
79%
TrendMonth
ODDS (%)
Bullish Trend 2 days ago
60%
Bullish Trend 2 days ago
84%
Advances
ODDS (%)
Bullish Trend 7 days ago
62%
Bullish Trend 3 days ago
75%
Declines
ODDS (%)
Bearish Trend 3 days ago
49%
Bearish Trend 9 days ago
87%
BollingerBands
ODDS (%)
Bullish Trend 2 days ago
70%
Bearish Trend 2 days ago
82%
Aroon
ODDS (%)
Bearish Trend 2 days ago
50%
Bullish Trend 2 days ago
82%
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ACGL
Daily Signalchanged days ago
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PRTA
Daily Signalchanged days ago
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ACGL and

Correlation & Price change

A.I.dvisor indicates that over the last year, ACGL has been closely correlated with ORI. These tickers have moved in lockstep 73% of the time. This A.I.-generated data suggests there is a high statistical probability that if ACGL jumps, then ORI could also see price increases.

1D
1W
1M
1Q
6M
1Y
5Y
Ticker /
NAME
Correlation
To ACGL
1D Price
Change %
ACGL100%
+1.65%
ORI - ACGL
73%
Closely correlated
+2.60%
AIG - ACGL
68%
Closely correlated
+1.13%
HIG - ACGL
61%
Loosely correlated
+1.58%
FIHL - ACGL
53%
Loosely correlated
+1.76%
IGIC - ACGL
42%
Loosely correlated
+0.46%
More

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 52% 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%
-0.12%
RCKT - PRTA
52%
Loosely correlated
-3.96%
SVRA - PRTA
45%
Loosely correlated
N/A
DNLI - PRTA
40%
Loosely correlated
-0.10%
AXON - PRTA
38%
Loosely correlated
-4.21%
OCUL - PRTA
36%
Loosely correlated
-1.38%
More