IsoRay (ISR) Reports Q2 Loss, Lags Revenue Estimates Posted byZacks Equity Research February 8, 2022 Leave a comment on IsoRay (ISR) Reports Q2 Loss, Lags Revenue Estimates IsoRay (ISR) delivered earnings and revenue surprises of 0% and 8.06%, respectively, for the quarter ended December 2021. Do the numbers hold clues to what lies ahead for the stock?