Screenshot YouTube/Milken Institute Ken Griffin, the billionaire founder of high-frequency trading firm Citadel, says that he and everyone else on Wall Street are "more and more in a winner-take-all world." He made these comments in a rare one-on-one session at the SkyBridge Alternatives Conference in Las Vegas on Wednesday. This idea was a theme in two parts of what he was saying to host Anthony Scaramucci. For one, he meant "winner-take-all" in terms of talent.