South Korean brokerages sharply increased short-term fundraising this year as retail investors piled into margin trading (buying stocks with borrowed money) and a domestic stock rally lifted demand for settlement funding and trading margin deposits. Cumulative issuance of commercial paper (short-term unsecured debt) and electronic short-term bonds reached 723.89 trillion won (approximately $511.3 billion) through Aug. 7, up 170.4% from 267.72 trillion won (approximately $189.1 billion) a year earlier, with ultra-short electronic short-term bonds accounting for most of the rise. Margin loan balances rose from 27.29 trillion won (approximately $19.3 billion) at the end of last year to 38.63 trillion won (approximately $27.3 billion) on June 24 before easing to 28.79 trillion won (approximately $20.3 billion), while issuance peaked in May and June and then fell sharply in July as the market corrected. Korea Investment & Securities posted the largest increase and accounted for roughly half of the total rise in issuance, while credit rating industry sources said strong earnings and smooth market absorption limit immediate concern even as shorter funding maturities could raise refinancing pressure if market conditions tighten or short-term rates rise.