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Tyco International Ltd. has agreed to merge its flow-control business with Pentair Inc. in a $4.9 billion transaction that represents a variation on its six-month-old plan to split into three.

Ken deRegt will retire as head of fixed income at Morgan Stanley and be replaced by Michael Heaney and Robert Rooney. For other updates launch today's Movers & shakers slideshow.
Apax Partners offers $1.1 billion for Rue21, the same teenage fashion chain it took public in 2009. More video