** ASX-listed shares of Block XYZ.AX gain 4% to A$141.83
** Its NASDAQ-listed shares gained 4.3% overnight
** Jack Dorsey co-founded fintech firm joined the rebound in AI tech stocks
** Bitcoin breaks four-day losing run to rise 1.8%; Bitcoin-based revenue make up ~40% of the firm's total revenue
** Stock is the 10-biggest percentage gainer in ASX 200 .AXJO
** Stock gained 9.9% last year vs the AXJO's rise of 7.5%