Monday Markets close early....friday is a full day, and with the rebalancing and the end of quarter, it is sure to be eventful.
A list of holidays and hours can be found here. Just scroll down a bit. http://www.nyse.com/Frameset.html?nyseref=http://www.nyse.com/&displayPage=/about/1022963613686.html
Whilst England remain in the world cup all trading is officially susepnded anyway. Why do you think the fx markets have been so quiet and thin lately?!
Stocks close at 1PM EST on July 3 this year. http://www.nyse.com/Frameset.html?nyseref=http://www.nyse.com/&displayPage=/about/1022963613686.html
Someone posts one of these every American holiday (but not other countries' holidays - hmmm). Why not just look at the exchange websites for the official answer for the products you trade? Wouldn't it suck to be stuck in a position over a holiday because you listened to (incorrect) info from a message board?
I don't know why, but this is really funny, lol... But seriously... It would suck to be in a trade and all of a sudden your quotes stop. You think to yourself, wtf is going on here? No data. Crap. IB is down again...(or whoever)... And then realize, oh *hit! The market just closed. I am screwed. I am now a swing trader...