Overview
Citi highlighted that a sharp rally in South Korean equities is raising financial‑stability concerns as household borrowing, housing prices and retail investment activity accelerate.
Household Loan Surge
The bank reported household loans increased by KRW 9.3 trillion in May, up from KRW 3.5 trillion in April, marking the fastest monthly rise since August 2024. Data from the Financial Supervisory Service show that the bulk of the growth stemmed from personal credit‑line loans and overdraft accounts, which together expanded by KRW 5.3 trillion during the month.
Equity‑Related Capital Flows
Citi noted that the surge in borrowing is linked to heightened investor demand for equities. The combined value of stock investment trusts and investor deposits at securities firms reached a new 12‑month record in May. Capital continued to shift out of bank time‑deposits and bond investment products into equity‑related investments.
Retail Market Participation
Retail investors’ net purchases, including ETF‑related activity reflected through securities firms, climbed to a 12‑month record as of June 11. Domestic investors have largely absorbed selling pressure from foreign investors in the KOSPI, a dynamic Citi believes has contributed to recent weakness in the Korean won.
Housing Market Indicators
Data from the Korea Real Estate Board indicated that Seoul apartment rental prices, measured on a four‑week moving‑average basis, rose to their highest level since November 2015 during the second week of June. Apartment sale prices in the capital remained firm, reinforcing the view of a strong housing market.
Outlook
The report expects the Greater Seoul housing‑market rally to continue in the second half of 2026, supported by equity‑market gains, semiconductor‑sector bonuses and a structural shortage of housing supply. While a potential Bank of Korea rate‑hiking cycle could dampen demand for unsecured consumer loans—products that are sensitive to short‑term rates—the bank believes the impact on housing demand may be limited because recent funding for home purchases is increasingly tied to investment gains and bonus income rather than traditional mortgage borrowing.