Have you been paying attention to shares of Xeris Biopharma (XERS) ? Shares have been on the move with the stock up 32.4% over the past month. The stock hit a new 52-week high of $7.61 in the previous session. Xeris Biopharma has gained 112.4% since the start of the year compared to the -7.5% move for the Zacks Medical sector and the 5.3% return for the Zacks Medical - Drugs industry.What's Driving the Outperformance?The stock has a great record of positive earnings surprises, having beaten the Zacks Consen ...