One might swear that this is the same graph with different labels. This is either a data error, or a very odd coincidence indeed.
Chances are that what we see here are the algorithms at work. So, any question about whether or not these things can be programmed to deliver any result one wishes have just been answered.
Note to self: Tin foil alert, must adjust hat.
DJIA as of June 29, 2009
S&P 500 as of June 29, 2009