Costco has recently announced the addition of platinum bars and coins to its range of precious metals available for purchase, following a period of impressive growth in gold and silver sales. The move comes as the retailer aims to attract younger shoppers, such as millennials and Gen Z, who are increasingly frequenting wholesale clubs. While the demand for gold continues to soar, causing ongoing sales of gold bars and silver products, some financial experts are cautioning that the new platinum offerings may not guarantee a profitable investment. Despite this, Costco remains optimistic about its new addition, reinforcing its strategy to diversify its precious metals lineup.