What is the relationship between Pimco and Investment Management in the context of the input sentence. Choose an answer from: product/material produced; manufacturer; distributed by; industry; position held; original broadcaster; owned by; founded by; distribution format; headquarters location; stock exchange; currency; parent organization; chief executive officer; director/manager; owner of; operator; member of; employer; chairperson; platform; subsidiary; legal form; publisher; developer; brand; business division; location of formation; creator.
Text: Pacific Investment Management Co, which is known as Pimco and is a unit of Germany's Allianz SE, said the Pimco Total Return Fund increased its holdings in U.S. government-related securities to 19.6 percent in June, up from 8.5 percent in May.
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