Elon Musk's bid for Twitter Inc., which has been upended by the billionaire's threat to walk away, attracted a bevy of big-name backers and Silicon Valley mainstays. There were some notable exceptions.
High on that list is a Dubai-based investment firm whose assets have surged to more than $5 billion under its secretive founder Alexander Tamas, according to regulatory filings and people familiar with the matter. Vy Capital -- whose main website consists of one page, with no address and no contact details -- has committed $700 million to finance Musk's