The medical device company has made a peculiar bet on a popular cryptocurrency.Semler Scientific (SMLR -2.31%) shot up 24.5% in October, according to data from S&P Global Market Intelligence. The medical device company has started buying up Bitcoin with cash on its balance sheet, which is correlating its stock price to the popular cryptocurrency. Even after the price jump last month, the stock is still down 35.4% in the last five years as it saw slowing revenue and declining operating margins.Here's why Sem ...