NYX 360: 18 April, 2011

NYSE Euronext introduces supplemental liquidity providers in Europe (FT Trading Room)

High expectations for Air Lease IPO (WSJ)

Vanguard Health Systems and Renren file for initial public offerings

Sequans Communications celebrates IPO on NYSE (NYX, WSJ)

With his sight diminishing, 8-year-old boy visits the place he most wanted to see: New York City, including NYSE (Dallas Morning News)

Dr. Reddy’s Laboratories’ next decade (CNBC)

NYSE Euronext upgrades Intellidex series of indexes (NYX)

Close to the speed of light: How fast are you trading? (Financial News)

Shadow of flash crash hangs over TradeTech (FT Trading Room)

Elsewhere on NYSE Exchanges: France Day at the NYSE; Morning Report: April 18, 2011

The financial-literacy programs behind those Girl Scout cookies (CNBC)

On this day in 1980, NYSE admitted its first woman specialist, Amy W. Newkirk (NYX)

And on this day in 1999, the euro became the official currency of 11 countries (NYT)