Program Trading Avg'd 57.4% of NYSE Volume during Apr. 18-22 <A HREF="http://www.nyse.com/Frameset.html?displayPage=%2Fmarketinfo%2FProgramTrading.html" target="_blank">http://www.nyse.com/Frameset.html?displayPage=%2Fmarketinfo%2FProgramTrading.html</A> View the Top 15 Most Active <A HREF="http://www.nyse.com/pdfs/pt42805.pdf" target="_blank">http://www.nyse.com/pdfs/pt42805.pdf</A>