What Boosted Merck’s Stock Price on April 9
On April 9, 2018, Merck (MRK) stock rose ~4.4% in early trading and ~2.7% during the day. The highest price reached on April 9 was 7% higher than the stock’s April 8 closing price. Peers Bristol-Myers Squibb (BMY), AstraZeneca (AZN), and Roche (ROG) returned -0.08%, 0.24%, and 0.05%, respectively on April 9, and the SPDR S&P 500 ETF (SPY) rose ~1.1%. MRK accounts for ~0.65% of SPY’s total holdings.