The graph below shows the Market Potential Speedometer readings for the S&P 500.

Using the Potential Speedometer we can see the Buy and Sell Opportunities.

Each zone is marked on the chart.

The Buy zone usually begins at the Speedometer crest and ends at a trough.

Likewise and opposite, the Sell zone begins at a trough and ends at a crest.

The arrows indicate an approximate point of diminishing returns, meaning the Buy or Sell action is optimal before that point.

The Buy and Sell Opportunities generally optimize before the moment when the speedometer is increasing or decreasing rapidly.

Looks like we have entered a Sell Opportunity.

Good Luck.