Indeed, U.S. CDO issuance was up, totaling $188.3 billion through the first half of 2007, a small but not insignificant rise from $147.3 billion for the same period in 2006, according to Thomson Financial data.

Merrill Lynch remained entrenched in its number-one spot for the first half of 2007, a position it also held in the first half of 2006, with a 16.8% market share and 36 issues, Thomson said. Citigroup Global Markets continued to hold steady at number two from the first half of 2006, also with 36 issues but a market share of 14.2%.

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