Credo's 11% drop on its promotion to the Russell 1000 was index plumbing, but falling twice as much as chips exposed its fragility: at 33x sales with three customers making up 88% of revenue, it is vulnerable. Forced Russell 2000 selling met only a teaspoon of large-cap index buying. Holding $236 and reclaiming $241 targets a $252 gap fill; losing $231 means real sellers. The next print, around early September, decides it: falling concentration makes it a trade, 88% staying means fade the rip. x.comÂ