Yeah, the markets are open Friday too, but the volume will be so light, most everyone is on vacation, and it's not a full trading day, so I don't consider it to be a trading day worth worrying too much about.
Homework
Welcome to the neoTOOLBOX!
Here you will find thoughts on various markets (primarily the e-mini S&P future contract (ES)) as well as collection of eSignal scripts written by neoTOOLBOX.
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EminiAddict.com
LiveWithOscar.com
Brett Steenbarger Blog
Afraid to Trade Blog
Advanced GET Blog
Financial Calendar
Indexes and ETFs
Contract Rollover Info