A series of higher lows on this dips seems to be evident on this chart over the last 3 or 4 months.
Could well be a good sign for a long term reverse in trend, and we may well be at the begining of a long term upward trend. The Gold Andrews Pitchforks show a possible future path for the SP, with the White trendline showing a nice steady rise. One to keep an eye on IMO. DYOR