Sounds like BA is about to have an unpleasant week coming up due to production cuts. I noticed that SPX likes to retrace about 40-50% of the move BA is making as in the example above. Based on the early March fall you could speculate that if BA was to have a 6-7% weekly pullback that could put SPX around 2800 before breaking off and heading its own way.
I would like to see this pullback as it did in Aug 2018 before going higher, but I'm 50/50. It can just pop from here....
I've been hearing about this h&s idea in re: to SPX so I thought I would post my on view. As you can see from the chart, I think it is quite the opposite and we are working on an inverse h&s.