Article: Nasdaq: SuperMontage Stemmed Share Decline.(SuperMontage has helped Nasdaq curtail a drop in its market share)

SuperMontage has helped Nasdaq curtail a drop in its market share, which stabilized at 19.9 percent of overall trading volume in early December when the new trading system completed its rollout, the electronic market said last week.

The information was included in a report, "Results on the Introduction of Nasdaq's SuperMontage," which compares the market share of its stocks already rolled out on SuperMontage vs. their market share before the migration.

It was the first time that Nasdaq disclosed its market share since it stopped doing so during the Oct. 14-Dec. 2 rollout of SuperMontage. At the start of the rollout, Nasdaq said its market share stood at ...

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