Block lays off nearly half its staff because of AI. Its CEO said most companies will do the same CTV NewsEarnings live: Block stock surges after Jack Dorsey cuts 40% of workforce, Duolingo shares drop premarket Yahoo FinanceStock Movers: Block, Flutter, Duolingo BloombergJack Dorsey’s Block cuts thousands of jobs as it embraces AI BBCBlock shares soar as much as 24% as company slashes workforce by nearly half CNBC