these annoying late day selloffs is becasue of the data due tommorow. The money guys know that if they bid the markets too high before the housing and durable good numbers the odds are greater the market will reverse cause too much optimism is priced in. Instead, the money guys are keeping a lid on the markets (especially the dow & sp00z) is to build a base before a large rally tommorow on the news. I suggest buying the dips now and even if the markets go red. This will be bullish because it puts less presure on the numbers.