Stocks On The Move - April 30

Stocks Rise on Heavy Volumn:

• Ionatron Inc. (IOTN): shares of high power laser weapon maker surged 20.83% to $6.15 per share after the company gets a half million dollar contract from Navy for testing of a counter-explosive device. The stock was the fourth leading gainer on Nasdaq today with 21 million shares traded.
• International Securities Exchange Holdings Inc.(ISE): shares of New York based options exchange operator jumped 45.87% to $66.69 per share after Deutsche Boerse is buying the company for $67.5 per share. The stock was the leading gainer on NYSE today with 15 million shares exchanged hands.

Stock Drop on Heavy Volumn:

• Doral Financial Corp.(DRL): shares of San Juan, Puerto Rico based financial service company plunged 18.6% to $1.4 per share after the company's fourth quarter loss widened to $169.7 million compared to $52.5 million a year ago. The stock was the biggest loser on NYSE today with 4.68 million shares traded.
• Terra Industries Inc. (TRA): shares of agricultural chemical maker tumbled 12.24% to $17.64 per share after Citigroup downgrade the company to Hold. The stock was the third leading decliner on NYSE today with 5.27 million shares traded.