Random luck, gotta like it.
So, I'm about to place my montly (ish) purchase order in my taxable account on last Friday. The stock was around 74.85 (had been dropping all day). I set a limit order to 75.80 (I mistyped, meant to type 74.90 which is sorta funny in its own way), but the market closed shortly after my order was placed (which didn't execute because my price was too high.
When the market opens, the stock opens at 73.70 (ish), at which point my order instantly executes, then the stock rises almost immediately back up to 76ish dollars. So looking at the graph zoomed in to the last few days, there was a sharp decline down to a little point, at which point I purchased, and then a sharp rise back up.
Usually I purchase at the exact wrong time (right before a decline, right at the top of a nice run, etc), so I got a kick out of my perfectly timed trade. Not that it makes a huge difference, but I'll take the extra percent or two.