For November, I am displaying a slightly different graph. This month, I am displaying only the SPY 1993+ (it seemed to me that the IWM was very similar). But instead of just the median cumulative percentage change, I am also showing the average, and doing a large() to find the range of the mid 50% of the changes. The x axis is similar to previous posts, 1-10 are the first 10 trading days of November, and 11-20 are the last 10 trading days of the month.
Looking at the median, it seems like there might be a slight rise at the start of the month, then a drop around election day,then an upward bias for the rest of the month.
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