Credit Suisse Group AG says it may expand its lineup of exchange-traded funds to include commodities such as precious metals.

Assets in the bank's 24 Zurich-listed ETFs for bonds and global equity indexes totaled about $7.6 billion at Sept. 24, said Thomas Merz, the head of marketing and distribution in the asset management unit.

"We're exploring various options, and we're looking into commodities including precious metals," Merz said by phone from Zurich, where the company is based. "The bank has not decided which commodity will come out first."

Investment flows into commodity products advanced to $2.63 billion last month, at least double the amount recorded for any August, Barclays Capital reported on Sept. 10. Exchange-traded products attracted $1.74 billion, it said.

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