there is an old traders saw: sellers dry up buyers appear at a rising 200 dma, and buyers dry up and sellers appear at a falling 200 dma, if you look back at things for a long long time, it's not just an old wives (or ole traders) tale -g- imo you can throw out all that 20% gains stuff or 20% decline stuff as demarcations of bull or bear markets, if the 200 dma is headed up your in a bull market, headed down your in a bear market.