Jack Dorsey-led Block's Australian shares slump after Hindenburg report

Jack Dorsey-led Block's Australian shares slump after Hindenburg report

FILE PHOTO: Twitter CEO Jack Dorsey addresses students during a town hall at the Indian Institute of Technology (IIT) in New Delhi, India, November 12, 2018. REUTERS/Anushree Fadnavis/File Photo

Australia-listed shares of Block Inc, led by Twitter co-founder Jack Dorsey, plunged as much as 20% on Friday after Hindenburg Research alleged the payments firm overstated its user numbers and understated its customer acquisition costs.