Why Shares of PerkinElmer Dropped 14.4% in January

Shares of PerkinElmer (NYSE:PKI) fell 14.4% in January, according to data from from S&P Global Market Intelligence. The company specializes in medical diagnostic, food, environmental, and industrial testing, plus life science research. The stock closed at $201.06 on Dec. 31, opened the new year at $199.43, and fell to a low of $162.20 on Jan. 28.