This is a quick analysis and related to an idea I posted recently on the SPX.
On the monthly chart, you can see that the SPY is currently at very strong overhead trend line resistance that goes back to 2012.
Something to take into consideration when planning your trades. This is a POSSIBLE top, but the SPY could easily ride this trend line upwards as it has done in the past. I believe at the very least, this trend line will decrease the rate of growth relative to what we've seen in these previous months.