SPX closed at 4271.79. SPX is mostly bearish at these levels, especially after a high momentum sell-off starting on Thursday. SPX can continue to test lower, but critically needs to break below 4251 trendline resistance and move to test 4197-4150 resistance area this week. If these levels can hold, we can see SPX rebound to test 4454 eventually within 2 weeks. If these levels cannot hold, SPX is likely setting up to flush down to 4000.