This is a critical time to watch the new-highs list. Assuming this confirmed uptrend works, stocks destined to lead an uptrend often emerge early in the advance. Athenahealth (ATHN) hit a new 52-week high in the first half-hour of trade Wednesday but then reversed lower. Volume was only average. A new high posted the previous day came in 21% faster trade, so it's hard to see Wednesday's action as entirely worrisome. The company makes cloud-based