San Francisco — Galileo Russell is still coming down from the rush of his 23 minutes of fame. That’s how long he was in the spotlight during the bizarre Tesla earnings call last week, when a petulant Elon Musk cut off "boring" Wall Street analysts asking about the cash-burning company’s finances and declared: "We’re going to go to YouTube." Cue Russell, the 25-year-old host of a millennial-focused channel called HyperChange TV. The until-then little-known small-time investor lobbed roughly a dozen questions, many about technology and future products, that Musk deemed "great". It gave Russell such a thrill, he barely slept that night. "Basically, the entire Wall Street model just got disrupted," the self-described finance nerd said in a phone interview. His unlikely turn on the call began with HyperChange subscribers lobbying Tesla’s investor relations department and was sealed when Musk told Russell, via Twitter, that he could. "Elon just opened a Pandora’s box, and it’s a super int...

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