<p style="text-align:start;" size="1" _root="[object Object]" __ownerid="undefined" __hash="undefined" __altered="false">The IMAX Corporation on Tuesday said it grossed $728 million at the global box office this summer, a staggering 73% jump over its previous summer record and capping off a dramatic post-pandemic comeback for a company whose stock price has rallied nearly 70% in the last year.</p>