The market reacts to news information. What matters is how that information compares to expectations.
Every retailer in America is expecting a bump in sales. The question is if the bump that they receive is better than the bump they were hoping for.
So, the market could go up down or sideways.
Are you asking about September 24, 1869 Black Friday. Unaware of another one.
Usually? If it were that easy, we would all be rich.
Price and direction depend on supply and demand. What is it you don't understand?
Edit
Ah, I think you are talking about the day after Thanksgiving; the start of the shopping season.
http://www.stockrockandroll.com/stocks-t...
Do you have advanced trading skills for seasonals? Do you really trade this stuff? It's more a matter of identifying rather than predicting anything. You only take a shot for given probability, not a guess or impossible prediction. There's always a backup plan anyway, because no matter how smart you are, how much you know, you'll still be wrong about 50% of the time. It's about risk and money management more than anything. Timing the market is a fool's game for most people, especially if you don't have a trade plan.. Read David Nassar, Rules of the Trade.
Pretty much asking for a "prediction," which nobody can do. Or asking about trading the news, almost impossible after the fact (it's not that big of a factor in the overall economy anyway).
Do they usually go up? Down? Stay the same?