On Friday, Peter Giacchi will get up at 4am, as he does every morning. The senior trader at Citadel Securities will then take the same 5.45am ferry from Belford, New Jersey, to lower Manhattan, sit in the same place (starboard, fourth row, first seat) use the same turnstile entering the New York Stock Exchange, and open public trading in Uber — hopefully without a hitch.

Like many traders on NYSE's illustrious floor, one of the last bastions of open outcry trading, Giacchi is superstitious.

"Don't print all this," he jokes. "I don't want anybody messing up my game!"

Giacchi, 48,

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