One little correction and they jack it up 20%. Imagine what it will be if we roll over into a bear market. By doing this they will chase off some traders, thereby having an adverse effect on the firm's liquidity. Some will say they are being careful. Maybe they are but there are other ways to hedge.
Markets are dynamic, forecasts are silly, IMO. Forecasting the next day is not even possible. Make yourself available for what the market is offering each day in real-time. Start there first.
Here's a way to look at it. Man falls down a flight of stairs chances are he can get back up. Man falls out of a three story building he will need some time to recover. This weeks drop was a second story drop.
This weekend you will hear, this is the best opportunity in the past year to get in. I remember that in 2000, and 2008. The market would bounce up a bit, then make a lower low. Not at that point but you will hear buy buy buy.