[CBC News] As the KOSPI continues its sharp rally, breaking the 8,000-point mark, the scale of so-called 'debt investment' (borrowing to invest) has reached an all-time high. Investor deposits, which serve as standby funds in the securities market, have also surpassed 130 trillion won once again.

According to the Korea Financial Investment Association on the 30th, the margin trading balance as of the 28th was tallied at 37.0687 trillion won. This represents an increase of about 370 billion won from the previous day, marking its first entry into the 37 trillion won range. The balance, which stood at around 35.7 trillion won at the end of last month, has surged by more than 1.3 trillion won in just one month.

The margin balance refers to funds borrowed by investors from securities firms that have not yet been repaid, serving as a key indicator to gauge the scale of 'borrowing to invest' in the market.

Looking at the specific markets, the KOSPI market...