April’s monthly option expiration is generally bullish across the board with solid gains on the last day of the week, the entire week and the week after. Since 1982, DJIA and S&P 500 have both advanced 25 times in 39 years on expiration day with an average gain just above 0.2%. Monthly expiration day used to be stronger, but four or five declines in the last seven years has taken on a toll on the longer-term record. Nonetheless, expiration week has a bullish track record over the past 39 years even factoring in recent weakness on the last day. Average weekly gains are 1% or better for S&P 500, DJIA and NASDAQ. The bullish bias of April monthly expiration also persists during the week after although average gains have not been as strong.