The semiconductors, which had led the market higher throughout this year, are beginning to show some chinks in the armor. I'm not saying yesterday was the start of a reversal to the downside that will last weeks. I'm just saying that this overbought industry is likely to give up some ground. The negativity could spill over to other areas of the market. You want to make sure that any additions you are making are not all flash and no substance. One way to do that is by leaning on the Zacks Rank. Stocks like today's Bull of the Day which are Zacks Rank #1 (Strong Buy) stocks have been more resilient in the past during market downturns. Today's Bull is FrontDoor ...