While the weak yen is favorable to Japanese companies doing business elsewhere, the huge swings in the currency can be a problem, according to a top shipping executive.
Mitsui OSK Lines' revenue is mainly in U.S. dollars, so the company benefits from a depreciating yen, according to Chairman Takeshi Hashimoto. Mitsui OSK is the largest tanker owner and operator globally, and one of the largest shipping lines.
"We had some concern that the [weak yen] would create a confused situation in the financial market," he told CNBC's Lisa Kim in an interview.
What he wants to see is a stable currency market, Hashimoto told CNBC, adding that a range of 150-155 yen to the greenback would be "comfortable." The yen was recently trading around 153.
Japan's currency has swung sharply in recent months, hitting multi-decade lows over the the course of 2026, before multiple interventions by Tokyo — with a joint intervention by Washington — strengthened the currency for a period of time.