I went to this trading conference and the guy teaching it told us that whole numbers have support / resistance and if the price is above the whole number you'll make money just by buying at the whole number because it usually bounces. Vice Versa for the Short side So... I ended up taking the past 2 years of data for 1500 stocks both NYSE and NASDAQ and my strategy was... if at the open of the day the price was between 30.25 to 31.00 and 40.25 to 41.00 and 50.25 to 51.00... etc. Opposite for the short side. I would place a buy limit order at 2 cents above the whole number, Opposite for the short side. If I was filled I'd hold for 30 min to an hour. All orders were exited EOD Without slippage and comissions the average profit factor, which is gross wins / gross loss, for the entire 1500 stocks was 1.01. I've noticed this with a lot of things... a lot of the whole "trading peanut galary" all believe in the same common general truths... truthfully one should only believe after grinding the data themselves. It's really the only thing in this whole trading game that tells the truth...the raw data!