Gross Overhauls Dialynas’s Unconstrained Fund

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Bill Gross overhauled the Pimco Unconstrained Bond Fund after replacing Chris Dialynas as manager, taking control of Pacific Investment Management Co.’s best-selling alternative to traditional fixed income.

The $25.6 billion fund jettisoned 30-year Treasuries and most of its agency mortgage bonds, increased a wager on corporate debt through credit-default swaps, and ended bets that the U.S. dollar would appreciate against the Chinese yuan, according to data on Pimco’s website. The effective duration, a measure of sensitivity to interest rate changes, more than doubled in December, when Gross assumed control of the unconstrained fund.