REVERSION TO THE MEAN

More chatter all morning on the bubblevision about only 150 points away from the all time highs on the DJIA. Just wondering if anyone remembers what happened the last time we had all that chatter. Anyhow, since the markets trends only 15/20% of the time according to most experts is there any chance of a reversion to the mean trade developing on SPY and OIH? Nah probably will never happen.