Jack Dorsey's Square Is Testing a New Free Stock-Trading Service
Jack Dorsey, co-founder and chief executive officer of Twitter Inc., listens during a Senate Intelligence Committee hearing in Washington, D.C., U.S. (Photographer: Andrew Harrer/Bloomberg)

Jack Dorsey's Square Is Testing a New Free Stock-Trading Service

(Bloomberg) -- Jack Dorsey’s Square Inc. already lets customers buy and sell Bitcoin on its popular Cash App. Soon, it may let them buy and sell stocks. 
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