Costco plans to open 14 new warehouses in North America by November, expanding its footprint in the U.S. and Canada.

Jim Cramer warns Costco's high valuation ignores declining sales and membership renewals amid retail shifts.

Jim Cramer highlights concerns about Costco trading at 47 times earnings despite four consecutive quarters of declining comparable sales and weakening membership renewals. He contrasts this with strong performance from discount retailers like Five Be...