Celgene (CELG) is in the news today as it drops around 19% so far today. But notice, the charts have been warning of a trend slowdown and potential trend change for a while through the RSI and MACD divergences. I love divergences because they give you an early "heads up" to consider start lightening up your position on rallies higher so that you're not caught when the trend changes. https://s3-us-west-2.amazonaws.com/maven-user-photos/seanhyman/technical-analysis/IOSU6hIfr0e_ddd3b0bprg/lfEqSC787UKPvX-IQndUQw