About half the Sector Leaders are extended well past their buy points. But a few, like Facebook (FB), Jazz Pharmaceuticals (JAZZ) and Trinity Industries (TRN), are within buy range. That leaves the remaining stocks somewhere in between — in base-building mode. December IPO Autohome (ATHM), which lost 3.83 to 43.66, has been working on a deep, cup-shaped base since early March.