Discover historical prices for MRK stock on Yahoo Finance. View daily, weekly or monthly format back to when Merck & Company, Inc. stock was issued. Historical daily share price chart and data for Merck since 1970 adjusted for splits. The latest closing stock price for Merck as of March 13, 2020 is 76.75. The all-time high Merck stock closing price was 94.88 on November 29, 2000. The Merck 52-week high stock price is 92.64, which is 20.7% above the current share price. See the upcoming ex dividend date and dividend history for Merck & Company, Inc. (MRK). Stay alerted to dividend announcements for MRK and all the companies you follow at NASDAQ.com