Something I looked into, but the bid-ask spreads are immense! They were running about 7% for the upper-mid caps, and still hanging around 2% for Microsoft and Exxon. With commissions, these spreads are quite sizable, and for such short time periods, does any one successfully trade them intraday? Thanks for your help.
Market makers don't count. Arbitrageurs would, but is the market inefficient enough for the spread to be beat that quickly?
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