Investors yanked a record volume of cash from BlackRock Inc.’s exchange-traded fund that buys junk bonds as the notes lose value for the first month since May.

The $16.3 billion fund reported an outflow of 2.4 million shares yesterday, equal to about $218.9 million, according to data compiled by Bloomberg. That’s the biggest daily withdrawal in the five-year history of the iShares iBoxx High Yield Corporate Bond Fund, the largest of its kind.

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