Clean Harbors, Inc.(CLHB) caught my eye after being listed below. This provider of environmental services and hazardous waste disposal is one that I have been following for awhile. Back in March we saw this stock was a relative strength leader but had a fairly subdued following. A check back on the stock shows that still seems to be the case.

Chart Courtesy of Thomson Financial

Here is an updated weekly chart that shows the former resistance zone near 55 that we were tracking. The stock overtook that and never looked back. After a short consolidation the shares appear to be on the move again as they hit a new all-time high.

Despite the steady uptrend, option speculators still haven't really jumped aboard as overhead call open interest is relatively light. I would consider that encouraging for the intermediate-term uptrend under the continued argument that it seems there are still plenty of investors out there who have yet to "find" this stock. Over the very near-term though, there is a small concern. The stock has rallied for the last three sessions and is now pushing in on a short-term overbought condition. That doesn't mean a pullback has to happen but I think it increases the likelihood. A pullback could provide a good opportunity to jump on the longer-term uptrend.