It's been awhile since my last update here. As of May 26, the SPX (yellow line) continues to track somewhere between the two forecasts shown in the chart below. The blue forecast is based on SPX performance during the first year of the presidential term when the first five tradings days are positive. The green forecast is based on years since 1950 when the SPX is up 5% or more in the first 33 tradings days of the year.
During the first two months of 2017, the SPX appeared to be closely tracking the green forecast. However, since the Mar 1 high, the SPX has meandered sideways, and it briefly dipped below the blue forecast line in mid-May. For now, anyway, the SPX seems to be favoring the blue forecast over the green. As such, the blue forecast suggests the next opportunity for a seasonal low is coming in mid-June to early July. If we do indeed get a correction in that time period, then it should be bought for what could be the best rally of the year in July and early August.
As always, never rely on a single forecast/indicator. Do your own analysis to corroborate this work.