good trade location helps us cut our losers quickly and stay in our winning positions to maximize gains

"positive trade expectation occurs when the perception of the probability of a price event diverges from the actual probability of such an event"

What is the real question ?

Quadruple Witching

quadruple-witching expiration, meaning equity options, stock index futures, stock index options, and single stock futures expire -- which could create some additional volatility in the markets