Prothena (PRTA) came out with a quarterly loss of $1.86 per share versus the Zacks Consensus Estimate of a loss of$1.11. This compares to earnings of $1.22 per share a year ago. These figures are adjusted for non-recurring items.This quarterly report represents an earnings surprise of -67.57$0.92 per share when it actually produced a loss of $1.12, delivering a surprise of -21.74%.Over the last four quarters, the company has su ...