Browse Symbol Stacks: $SPX: slopechart_$SPX.jpg
Hat tip to Oscar Carboni. He showed a 21 day cycle in a different index, so I decided to check it out on the S and P.
50/200 SMA shown.
For entertainment one might switch to the 50/200 Hull Moving Average for a glimpse at what happens when humans do not show up to trade? I wrote a science fiction bit a while back in which a trading A.I. program flatlined every index on the planet after going live. I forgot about moving averages when I wrote that.