By Emily Mason, Bloomberg

Jack Dorsey’s Block Inc. joins the coveted S&P 500 on Wednesday, a symbolic milestone that puts the digital finance firm — pursuing everything from mobile banking to Bitcoin mining — under Wall Street’s spotlight.

For a company that helped pioneer mobile payments, the real test now is turning big ambitions into profit-driving execution: converting Cash App’s large user base into full-fledged banking customers, scaling Square’s product arsenal, and competing in the cutthroat world of Bitcoin mining.

The index inclusion delivers immediate inflows from passive funds and renewed investor attention. Block shares rose 7% the Monday following the announcement, softening the stock’s 22% decline in the first half of the year amid concern over the Oakland-based firm’s ea

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