Renowned investor "White-Haired Stock God" Serenity reported a remarkable 383% return on his trade involving the Korean ETF EWY. Serenity's strategy capitalized on the expansion of implied volatility, which rose from 32% to 58%, aligning with significant gains in Korean memory chip giants SK Hynix and Samsung Electronics. This trade, one of Serenity's most successful this year, leveraged deep in-the-money positions and was driven by his accurate prediction of increased volatility in the Korean equity market due to the memory industry's concentration.