Gcn did a YouTube on forged carbon bicycle rims. It's an outfit in Utah right next to Christensen so if I were a betting man it's who's making their stocks. Forging is to the carbon fiber world what OSB is to the plywood world. It's a Torry product with a different binder cooked to cure. I'm guessing yours has a fiber issue or curing issue through the bolt handle area. I say guessing as my experience in Composites is with hand laid layups, heat and compression molds.
Would imagine a crack there us well within the category of mfg defect.