As you can see the NASDAQ has respected the regression lines for quite awhile now. Once it gets to the upper regression line it pulls back and / or moves sideways and when nearing the bottom reverses and moves up. I'd suggest not getting heavy into QQQ stocks at this time. Of course it can break the regression line and move higher and out but I'd take that as a real warning that we are closer to at least a mild correction. I'm not bearish here, just cautious.