Jim Cramer expressed a mixed opinion on SK Hynix's entry into the US stock market, stating that US markets will "rue the day we let this Monster into our markets." He believes SK Hynix's shares are more about margin calls and gambling than DRAM pricing and capacity additions. The company's shares have risen 110% year-to-date in the Korean market, driven by strong AI memory demand, though its Q2 operating profit missed analyst estimates.