Between today and early next week it should not make that much difference overall. As previously stated in another response when the market goes up or down, most of the time rates parallel.
Often when rates increase significantly from one day to the next there is a correction a few days later - but it is literally like trying to predict what the stock market will do. We offer a free one-time float down so we usually advise locking and then if rates improve we can adjust the rate one time. (Anyone who knows what rates will be doing could make a LOT more money trading mortgage securities than as a mortgage banker...)
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