Stock On The Move - April 24

Stocks Rise on Heavy Volumn:

• Ballard Power Systems Inc. (BLDP): shares of Burnaby, Canada based proton exchange membrane(PEM) fuel cells maker soared 21.8% or $2.24 to new 52 weeks high of $12.5 per share on President Bush's endorsement on new energy source. The stock was the fourth leading gainer on Nasdaq today with 9.4 million shares traded, about 12 times average volumn.
• Rambus Inc. (RMBS): shares of Los Altos, California based memory chip maker sirged 15.28% or $5.9 to $44.5 today as the company was awared for $307 million on patent infringing case against South Korea's Hynix Semiconductor Inc.. The stock was the twelve leading advancer on Nasdaqy today with 23.6 million shares traded, the fourteenth most heaviest traded on Nasdaq.

Stocks Drop on Heavy Volumn:

• Silicon Laboratories Inc. (SLAB): shares of Austin, Texas based analog-intensive mixed-signal chip maker tumbled 10.76% or $6.05 to $50.18 per share on sliding first quarter net income due to higher expenses. The stock was the second leading decliner on Nasdaq today with 7.5 million shares traded, about 5 times average volumn.
• TD Ameritrade Holding Corp. (AMTD): shares Omaha, NE based online investment brokerage firm dropped 9.72% or $2.09 to $19.41 per share as the company lowered its forecast for 2007 despite soaring second-quarter net income. The stock was the sixth leading decliner and the eleventh most heaviest traded on Nasdaq today with 26 million shares exchanged hands.