Dorsey's Square posts bigger-than-expected loss as costs surge

Square Inc , the mobile payments company run by Twitter Inc Chief Executive Jack Dorsey, reported a bigger-than-expected quarterly loss as operating costs surged. Square, which went public in November, facilitates payments between businesses and customers with a credit card reader that turns any mobile phone into a payment terminal. Dorsey co-founded both Square and Twitter, but investors have been showing greater confidence in his ability to build Square into a strong business than in his chanc