Why it matters. South Korea is a major export economy and a bellwether for Asian markets, so the strength of its currency and the size of its reserve buffer affect global trade and investor sentiment well beyond Korea.
Background. The Bank of Korea is the country's central bank. The National Pension Service (NPS) is a massive state-run pension fund whose large dollar purchases for overseas investments can push the won lower; the BOK-NPS currency swap is a tool that lets the fund borrow dollars from official reserves instead of buying them on the market, easing pressure on the exchange rate. A won-dollar rate above 1,500 is historically weak for the Korean currency.
What to watch next. Watch whether the won stays above 1,500 and how aggressively the Bank of Korea keeps drawing down reserves to defend it in the months ahead.
South Korea’s foreign exchange reserves fell by about $880 million in May to $426.99 billion, the Bank of Korea (BOK) said on June 4, as authorities tapped the stockpile to defend a weakening won against a strong U.S. dollar.
The decline reversed a brief rebound in April and resumed a downtrend that had run since December. The central bank attributed the drop mainly to “market stabilization measures, including a foreign-exchange swap with the National Pension Service.”
Why the Reserves Shrank
The Bank of Korea is South Korea’s central bank, and its reserves are the war chest it uses to smooth out sharp currency swings. In May, the BOK leaned on a currency-swap arrangement with the National Pension Service (NPS) — the country’s giant state-run public pension fund, one of the largest in the world. Under the deal, the BOK lends part of its dollar holdings to the NPS to cover the fund’s dollar needs, which eases upward pressure on the won by reducing the pension fund’s direct dollar buying in the open market.
Despite those efforts, the won kept sliding. The won-dollar rate climbed from 1,483.3 won at the end of April to 1,507.9 won at the end of May (based on the 3:30 p.m. close in onshore trading). Since May 15, when it hit 1,500.8, the currency has stayed above the 1,500 mark — a notably weak level. Analysts link the dollar’s broad strength partly to safe-haven demand stirred by conflict involving the United States, Israel and Iran.
What’s Inside the Reserves
Breaking down the stockpile, securities such as government bonds fell by $3.39 billion to $380.68 billion. Deposits rose by $2.59 billion to $21.35 billion. Gold holdings stood at $4.79 billion, and South Korea’s reserve position at the International Monetary Fund (IMF) came to $4.4 billion.
How Korea Ranks Globally
South Korea’s standing among the world’s reserve holders was unchanged. As of the end of April, its reserves of $427.9 billion placed it 12th globally, just behind Hong Kong — the same rank it held in March. China leads by a wide margin with $3.41 trillion, followed by Japan ($1.38 trillion), Switzerland ($1.08 trillion), Russia ($758.7 billion), India ($690.7 billion) and Taiwan ($602.5 billion).
For an export-driven economy like South Korea’s, a comfortable reserve buffer is a key marker of financial stability. The latest figures show the buffer thinning modestly even as the central bank works to keep the won from weakening further.
