Look for shares of InterDigital to fall sharply at the opening of the U.S. stock market Tuesday.
The King of Prussia wireless technology company ended a six-month strategic review by choosing to remain independent, having not received any bids for the entire company. InterDigital undertook the review, hiring investment bankers in July, following a flurry of patent-driven deals involving Google, Apple and other big tech firms.
Speculation that InterDigital's extensive portfolio of 19,500 patents would attract a rich bid had dragged its shares above $75 per share last August. Shares closed Monday at $44.45.
DuPont Co. reported flat earnings for Q4 with $373 million, or 40 cents per share. However, for the full year, the Wilmington chemical company said that it had record earnings of $3.5 billion, or $3.68 per share, for 2011, compared with $3.50 billion, or $3.28 per share, for 2010.