The price for cryptocurrency Dogecoin spiked by about 30% Monday after Twitter CEO Elon Musk changed the app logo from its blue bird to a Shiba Inu dog, a symbol often associated with the coin.

By way of explaining the Doge logo change on Twitter, Musk, currently the world’s second-richest individual, posted a tweet Monday that said, “As promised” — with a screenshot of an ...

Peter Gratton, M.A.P.P., Ph.D., is a New Orleans-based editor and professor with over 20 years of experience in investing, risk management, and public policy. Peter began covering markets at ...