Stocks that moved substantially or traded heavily Tuesday on the New York Stock Exchange and Nasdaq Stock Market:
National Semiconductor Corp., up $9.99 at $24.06
Texas Instruments Inc. is buying the analog chip maker for $6.5 billion, or $25 per share _ a 78 percent premium to its stock price.
KB Home, down 51 cents at $11.69
The homebuilder's quarterly loss deepened as it delivered fewer homes and net orders declined. But it said customer traffic was rising.
Walgreen Co., up 28 cents at $41.11
A key sales metric for the pharmacy chain rose 3 percent in March as prescriptions filled and customer spending increased.
Apple Inc., down $2.30 at $338.89
The Nasdaq-100 Index is being rebalanced, significantly reducing the technology company's weighting in the important market barometer.
Google Inc., down $18.59 at $569.09
The Federal Trade Commission is weighing an antitrust probe of the online search giant, according to a Bloomberg report.
Diamond Foods Inc., up $3.84 at $61.06
The maker of Emerald nuts and Kettle potato chips is buying Procter & Gamble Co.'s Pringles chips business in a $1.5 billion deal.
Expedia Inc., up 29 cents at $22.72
American Airlines flights are back on the travel company's website after the two ended a three-month dispute over fees.
Cubist Pharmaceuticals Inc., up $3.76 at $29.01
The biopharmaceutical company settled a patent dispute with generic drugmaker Teva that analysts say will benefit Cubist.