View: mcoscillator.com/data/charts/weekly/Friday_Up.gif

In terms of being an indicator of sentiment, the market's behavior on Fridays can tell us a lot more than its behavior on any other day of the week. The biggest reason is that investors who go long or stay long on a Friday have to accept 2 or 3 days of "event risk", knowing that they cannot get out of those positions if something goes bad somewhere in the world." McClellan