What do they mean when they say that "options expirations" could "sway" the market?

Question

What do they mean when they say that "options expirations" could "sway" the market?

Answer 1

If you invest in options - you are buying the right to purchase a stock for a specified price by a specified date.  After this date, the options have expired at which time you either buy the stock or have already sold your option before the expiration.  The usual expiration is the 3rd Friday of the month.  These expiration days can sometimes influence the market, but overall I think the effect is negligible.

Answer 2

When stock options expire, it triggers a certain amount of buying and selling to meet option demands.