UNCHARTED TERRITORY

When a stock breaks to new highs, how can you tell how long the rally will last? In astronomy, scientists understand why the star that burns brightest extinguishes itself long before one emitting a cooler, darker light. So it is with market rallies. Parabolic moves cannot sustain themselves over the long haul. Alternatively, stocks that struggle for each point of gain eventually give up and roll over. So logic dictates that the most durable path for continued uptrends lies somewhere in-between these two extremes.