Microsoft Corp. (NASDAQ:MSFT): Google Sites (NASDAQ:GOOG) led the U.S. explicit core search market in January with 66.2% market share (up 0.3 percentage points), followed by Microsoft (NASDAQ:MSFT) Sites with 15.2% (up 0.1 percentage points) and Yahoo! (NASDAQ:YHOO) Sites with 14.1%. Ask Network (NASDAQ:IACI) accounted for 3% of explicit core searches, followed by AOL (NYSE:AOL) with 1.6%. The shares closed at $30.77, up $0.11 or 0.36% on the day. They have traded in a 52-week range of $23.65 to $30.67.

Motorola Mobility (NYSE:MMI): Google (NASDAQ:GOOG) said that should it complete its proposed acquisition of Motorola Mobility (NYSE:MMI), it will honor Motorola Mobility’s existing essential patent licensing commitments and grant new ones going forward with “a maximum per-unit royalty of 2.25%,” AllThingsDigital reports. When applied against a device’s selling price, like the Apple’s (NASDAQ:AAPL) iPhone, it’s sizable. The shares closed at $39.35, up $0.39 or 1% on the day. They have traded in a 52-week range of $20.77 to $39.20.

Nuance Communication (NASDAQ:NUAN): Reports Q1 revenue $382.0M vs. consensus $391.55M. The shares closed at $30.45, up $1.12 or 3.82% on the day. They have traded in a 52-week range of $15.56 to $29.96.

Mastercard Inc. (NYSE:MA): MasterCard Worldwide and Silver Tail Systems, a leading provider of web session intelligence, announced a new exclusive relationship that will focus on leveraging and creating innovative solutions to help combat online fraud. The companies’ collective expertise will enable merchants to differentiate fraudsters from legitimate consumers in real-time during the online shopping experience. The shares closed at $396.40, up $1.49 or 0.38% on the day. They have traded in a 52-week range of $240.36 to $395.16.

Philip Morris International (NYSE:PM): Excluding a forecasted total unfavorable currency impact of approximately 10c for 2012, adjusted diluted earnings per share are projected to increase by approximately 10% to 12% versus $4.88 in 2011. Forecast includes a one-year gross productivity and cost savings target for 2012 of approximately $300M, and share repurchase target amount for 2012 of $6B. The shares closed at $80.06, up $2.18 or 2.8% on the day. They have traded in a 52-week range of $58.87 to $79.96.

Want news like this in real-time so you can get an edge? Click here for Wall St. Cheat Sheet Pro.

To contact the reporter on this story: Derek Hoffman at staff.writers@wallstcheatsheet.com

To contact the editor responsible for this story: Damien Hoffman at editors@wallstcheatsheet.com

Get Your FREE Special Report: 4 Things You Must Know About the US Economy Now!