The SPY has been repeating a similar cycle for the past two weeks.
Following a short squeeze type of rally, price has then rolled over in an XYZ corrective wave.
The 3/10macd 3a criteria describes price as testing resistance. Should resistance break and price goes higher the fast line shows greater momentum and the slow line is often pulled positive. This behavior can often begin a new trend. However, rather then a trend developing, what we have seen is price being sold and correcting most/all of the previous gains.
Here are two looks at what I'm talking about, the latter just highlighting the XYZ waves
A broader look in the chart below; we haven't gone very far, but there are clear areas to watch