Shares of Australia's Stakk SKK.AX rise as much as 35.3% to A$0.023, logging their best day since Sept. 30, 2025
Stock hits highest level since March 3
Finance firm says its unit Stakk IQ has secured new enterprise client in U.S. worth A$7.85 million ($5.50 million) in revenue over 12-month period
Stock down 40% this year, including the day's move
($1 = 1.4263 Australian dollars)