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The best strategy to use when reviewing the bid-ask spread is to keep a close eye on how that spread changes during the day. Look at how the spread shifts based on how the stock is trading or what the market sentiment for it might be. A stock that is not doing too much might have a better spread. This could include a stock with a low volume total that does not have any significant news or changes. Watch for how long it takes for that spread to change so that you have an idea of what it takes for the spread on a stock to move. Remember, every stock is unique as to how its bid-ask spread will evolve.
