Coinbase Global Inc COIN made headlines in May by becoming the first cryptocurrency exchange included in the S&P 500 index, marking a significant milestone for the crypto industry. This inclusion signals growing mainstream acceptance and positions Coinbase among America's largest and most influential companies. But just weeks after its debut, Coinbase is facing its first major challenge: tariff-induced market turbulence and a rocky crypto environment that threaten to stall its momentum.See Also: Gold Vs. Bi ...