Is The System About To Throw A Tie Rod Or Something? I Cannot Recall Seeing Gyrations Like This Before. November 20, 2018 12:55 pm by IWB by Chris The S&P 500 is oscillating by ~10 point increments, up and down…per minute! …a “spirited defense.” Not terribly subtle, but that’s almost certainly the point. I like to call this chart pattern The Inverse Matterhorn.