Merck (MRK) stock ends higher on long-term Keytruda cancer-vaccine data; Guardant pact and earnings ahead
Merck shares rose 0.6% to $109.45 Tuesday, defying a broad U.S. market selloff. Five-year data showed its personalized melanoma vaccine with Moderna cut recurrence or death risk by 49% in a Phase 2b trial. Investors await Phase 3 trial timing and Merck’s Feb. 3 earnings call for more details. The S&P 500 fell 2.06% and Nasdaq lost 2.39%.