Domestic trading houses are scouting for assets as they enjoy their best profit outlook in six years, driven by higher prices for commodities from metals and coking coal to oil and natural gas.

Equipped with a nearly $50 billion (¥5.3 trillion) war chest, trading houses are looking to bolster their global commodity supply chain networks, eyeing gas fields in Australia, oil in Iraq and coal and copper assets.

But — still smarting from huge write-downs in the last investment cycle — big debt-fueled acquisitions look to be off the agenda, with the focus on greenlighting undeveloped assets, taking bigger stakes in existing projects, and trading up to better quality operations.