Short interest in Merck & Co Inc (NYSE:MRK) decreased during the last reporting period, falling from 27.50M to 26.21M. This put 1.06% of the company's publicly available shares short.

Based on the recent average volume of 10.26M shares traded per day, it would take 2.55 day(s) for holders of this short interest to close out their positions without sending the stock sharply higher.