For those who don't know, after hours trading is simply the pairing of buyers and sellers after the markets' close.
It is a great option as sometimes late news, market swings etc. can cause the after market to be really wild.... huge price swings, crazy buying and selling and so on. Frenzies, panics, even insider buying.
This is a resource you want to keep in your bookmarks for a day when news came out that you want to react to immediately or as an indicator of what the next trading day could be like.
Just re-type the web address in or simply cut and paste.