(Bloomberg) -- Bill Gross, who runs the world’s biggest bond fund at Pacific Investment Management Co. and is recommending short-term debt, maintained his biggest holdings in Treasuries and U.S. government-related securities in November.

The proportion of the securities in the $244 billion Total Return Fund was 37 percent, unchanged from October, based on data from the company’s website. Mortgage debt held at 34 percent, while U.S. credit was unchanged at 10 percent. Holdings of money market debt and cash-equivalent securities rose to 5 percent from 4 percent.

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