Overlayed on each of the following two monthly charts of the S&P 500 Index (SPX) is a Fibonacci Speed Resistance Fan.
The first one is taken from the low of March 2009 to the high of May 2015, which preceded the last major pullback to first fanline support and prior to the recent minor one this past February. Based on this fan trajectory, the first major resistance level sits just above the last all-time high (of 2872.87) at 2900.