Japan Spends Record 111 Trillion Won to Defend Yen

Intervention Held on Last Day of Golden Week Holiday Yen-Dollar Rate Moved From 155 Range to 159 Range First Market Intervention in About 1 Year and 9 Months

International|
|
By Park Yoon-sun
||
A monitor at a foreign exchange trading firm in Tokyo, Japan, displays a graph of yen exchange rate movements on the 1st. Reuters/Yonhap - Seoul Economic Daily International News from South Korea
A monitor at a foreign exchange trading firm in Tokyo, Japan, displays a graph of yen exchange rate movements on the 1st. Reuters/Yonhap

The Japanese government's foreign exchange market intervention to halt the yen's weakness since last month reached a record 111 trillion won, data showed.

According to the Nihon Keizai Shimbun on the 29th, Japan's Ministry of Finance said the scale of its foreign exchange market intervention from the 28th of last month through the 27th of this month was 11.7349 trillion yen (about 111 trillion won). Nikkei reported that this is the largest intervention ever conducted by the Japanese government in the foreign exchange market during a phase of yen weakness.

When the yen-dollar rate exceeded 160 yen late last month and the yen's value fell sharply, the Japanese government, immediately after strong verbal intervention, moved to intervene in the foreign exchange market by actually buying yen and selling U.S. dollars. While the specific intervention dates were not disclosed, the government reportedly conducted yen-buying and dollar-selling intervention on the 30th of last month and then intervened intermittently in the market during the Golden Week holiday period earlier this month. This foreign exchange market intervention pushed the yen-dollar rate down to the 155 range, but it has recently returned to the 159 range.

The intervention by Japan's foreign exchange authorities was the first in about one year and nine months since July 2024. The Japanese government previously conducted yen-buying market intervention worth 9.7885 trillion yen (about 92 trillion won) over the two days of April 29 and May 1, 2024, and 5.5348 trillion yen (about 52 trillion won) over the two days of July 11 and 12 of the same year.

Original reporting by Park Yoon-sun for Seoul Economic Daily.

AI-translated from Korean. Quotes from foreign sources are based on Korean-language reports and may not reflect exact original wording.

AI KEY

Preview
Korean Corporate Intelligence HubKOSPI · KOSDAQ · 12 sectors

A live, cap-weighted view of every KOSPI and KOSDAQ sector, with same-day Korean reporting distilled by company — built for foreign investors, correspondents and analysts who need to scan Korea before the next session.

Korea Chaebol Tree

Preview
Families Behind the GroupsKFTC May 2026 · DART filings

An English-first interactive map of Samsung, SK, Hyundai, LG and Lotte — built for foreign investors, correspondents and analysts. Korea translates companies into English. We translate the families behind them.

SIGNAL

Pre-register
English Edition · Capital MarketsM&A · IPO · PE · Fund Flows

Pre-register for SIGNAL English Edition — a premium subscription bringing Korean capital markets coverage (M&A, IPOs, private equity, fund flows) to global institutional investors. First access to the 50% introductory rate.