Divergence

RSI divergence on SPY weekly chart pretty clear here. This doesn't get every top but it is often there on high tests that matter. We can add in BB divergence because 2/27 week top tagged the band and this high entirely inside thus far. 

Note the positive examples on the lows in early 2016 - slightly lower price lows yet closing inside the band and higher RSI compared to Septepmber 2014.