[kqr]

I was gonna say, why not just close all positions and turn off the computers around the leap second? How much are you realistically gonna lose by missing a few minutes of trading, compared to the alternative risk?

Edit: I guess the other way to look it is I guess now how much you can make on a few minutes of trading, seeing that it was worth putting at least one software engineer on it for a long time despite the risks...

[alfalfasprout]

It can be extremely costly to close positions (often from a tax perspective this is a big-no no in some cases too).