How exactly does a stock perform on options expiration day?

Back in the '80 's all the buzz about the volatility that occurred near the options expiration date. 'Triple witch Days "when the options expiration of futures, indices and stocks has been a day really scary for a commercial activity in the market (which is the third Friday of March, June, September, December, everyone knew in 1985 and nobody knows now).

About the price and expiration date

"The price of a stock trades near the exercise price of the most popular choice around 3-4 pm on the due date" is sort of weird statement. That is close to options expiration, the strike most popular choice tends to be the ATM options. You can read wrong and that the options market is an indicator of progress in the actions that will be, but that would be silly.