Billionaire Harsh Goenka said Indian stock markets are in "full drama" these days, referring to heightened volatility Sensex and Nifty are showcasing. "One day it's Salman Khan, next day it's Uday Chopra. Sensex is having amazing mood swings," he said. "People sell even underwear in panic...Real investing hero is one who buys portfolio, not popcorn, even in panic," he added.