# This super composite rating is the result of a weighted average of the rankings based on the following ratings.

*biotech · news · 2026-05-27 · MarketScreener*

## Key points

- The Trader super rating uses a weighted average emphasizing short-term EPS revisions over four months.
- The Investor super rating incorporates one-year EPS revisions and a broader Fundamentals composite.
- The Global composite requires coverage by at least four out of five specific rating categories to calculate.
- The Quality rating factors in Financial Health and requires at least two out of three sub-ratings.

Trader This super rating is the result of a weighted average of the rankings based on the following ratings: Valuation (Composite), EPS Revisions (4 months), and Visibility (Composite). We recommend that you carefully review the associated descriptions. Investor This super composite rating is the result of a weighted average of the rankings based on the following ratings: Fundamentals (Composite), Valuation (Composite), EPS Revisions (1 year), and Visibility (Composite). We recommend that you carefully review the associated descriptions. Global This composite rating is the result of an average of the rankings based on the following ratings: Fundamentals (Composite), Valuation (Composite), Financial Estimates Revisions (Composite), Consensus (Composite) and Visibility (Composite). The company must be covered by at least 4 of these 5 ratings for the calculation to be carried out. We recommend that you carefully review the associated descriptions. Quality This composite rating is the result of an average of rankings based on the following ratings: Returns (Composite), Profitability (Composite) and Quality of Financial Reporting (Composite), and Financial Health (Composite). The company must be covered by at least 2 of these 3 ratings for the calculation to be performed. We recommend that you carefully read the associated descriptions.

[Read the full story on MarketScreener](https://www.marketscreener.com/news/merck-chicken-bronchitis-vaccine-approved-for-use-in-china-ce7f5ad2de8ff523)

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