What happened Shares of The Container Store (NYSE: TCS), a retailer of closet and storage items, fell dramatically in the first few minutes of trading on Feb. 9, quickly losing 24% of their value. One big problem is that costs for shipping and materials have been going up, an issue investors have been paying particularly close attention to in the retail sector. Basically, sales are flattening out, or falling (see below), right when The Container Store is dealing with inflation's negative impact on its profit margins.