‘The Rock’ and Partner Dany Garcia Invest in Finance App Acorns

Dwayne “The Rock” Johnson and his business partner Dany Garcia are making a investment in digital personal-finance service Acorns -- which will give each new user a $7 credit, a symbolic reference to when he was a struggling athlete and the amount of money he had left in his pocket.

Acorns is a micro-investing platform including a service that lets users automatically round up their purchases to the nearest dollar and deploy the difference in a diversified portfolio of exchange-traded funds. The company has almost $3 billion under management and 8 million people in the U.S. have opened accounts.

Years ...