Japan's three largest banks—MUFG, Sumitomo Mitsui, and Mizuho—have collectively boosted their foreign currency liquidity buffers to $1.25 trillion as of August 9, 2026. This move is seen as a precautionary measure in anticipation of sudden dollar demand amid ongoing tensions related to the Iran conflict. The increased liquidity reserves aim to strengthen the banks' ability to manage potential market volatility and support financial stability in the region.

The development reflects heightened caution within Japan's banking sector in response to geopolitical uncertainties affecting Asia and the broader global economy.

Sources