"When we are the victims of an illusion we do not feel it to be an illusion but reality. It is the same with evil. Evil when we are in its power is not felt as evil but as a necessity, or duty. Once a certain group of people has been placed outside the ranks of those whose life has value, then nothing comes more naturally than murder. As soon as men know they that they can kill without fear of punishment or blame, they kill; or encourage killers with approving smiles." Simone Weil
Not all expirations are equally influential on the markets. As in the case of stocks it depends on the popularity of the contract, and of course the size and distribution of puts and calls at the various strike prices.
Investors can ignore these 'wiggles.' I tend to keep them in mind for entry and exit purposes for non-futures positions, and potential hedging in my trading portfolio.
