May

9

I'm sure you have read articles like this, but I found it hard to believe at first. Buy the close and sell the open since 1993 returns just under 600%. The reverse flat.

anonymous writes:

Along comes an article BUY THE CLOSE SELL THE OPEN. Since 1993 with 5280 observations the average move at the open is 0.2 that's 20 points on 1000 base, i.e, 0.02 % it's unchanged from open to close. 

Alston Mabry writes: 

SPY, for the last 250 trading days:

mean Close-Open:  +0.17
sd Close-Open:   0.9839755

mean Open-Close:  -0.06
sd Open-Close:   1.88

anonymous writes: 

transaction costs….
 


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