Notice CME around 3PM when the stock traded around 520$, and both Mar520 Call and Put traded around 1$. The stock has fallen a lot for the day, and I was thinking it might close at 520$, BUT forgot one fact that what the real market is telling us.
Look at the chart, after forming a double bottom, the stock bound back beautifully from 520 to close above 525, while the Call option closed at 5.10.
So technical analysis is always the basis for trading, just follow the trend, do let other preset-mind lead you.