But Kenny Polcari, a 55-year-old stockbroker who's been with the NYSE for the past 35 years, didn't know any of that, he tells Business Insider. He just knew that there was some kind of tech IPO ...

Stockbroker’s itchy hand got him thinking about an old superstition suggesting it might lead to a financial windfall. GETTY IMAGES A stockbroker’s intuition — plus a little superstition ...