South Korea\'s KOSPI is extending a roller-coaster run, swinging sharply on foreign selling and moves in U.S. rates and oil prices. The index rebounded 8.42 percent on May 21 after recent steep declines, while volatility gauges climbed. Margin debt hit a record 36.6 trillion won and forced selling rose as the market slid earlier in the week. Regulators are stepping up monitoring and urging restraint ahead of new single-stock 2x leveraged ETFs.

Spot Solana exchange-traded funds recorded their largest weekly net inflows since February, lifting expectations for further gains. Weekly net inflows totalled $39.23 million, with Bitwise\'s BSOL accounting for most of the demand. Solana futures open interest rose to $6.4 billion from $4.94 billion in less than two weeks, while Solana climbed to $97. Markets are watching whether $95 turns into support and whether $120 becomes the next target.