Shares of the following companies may have unusual moves in U.S. trading. Stock symbols are in parentheses.
Nasdaq-100 Index changes were announced after exchanges closed on Dec. 10, and the additions and deletions will take effect before markets open on Dec. 20. Akamai Technologies Inc. (AKAM US), Ctrip.com International Ltd. (CTRP US), Dollar Tree Inc. (DLTR US), F5 Networks Inc. (FFIV US), Micron Technology Inc. (MU US), Netflix Inc. (NFLX US) and Whole Foods Market Inc. (WFMI US) were picked to join the index.
The following companies were deleted from the Nasdaq-100: Cintas Corp. (CTAS US), Dish Network Corp. (DISH US), Foster Wheeler AG (FWLT US), Hologic Inc. (HOLX US), J.B. Hunt Transport Services Inc. (JBHT US), Logitech International SA (LOGI US) and Patterson Cos. (PDCO US).
Airgas Inc. (ARG US): The company, fending off a hostile takeover bid from Air Products & Chemicals Inc. (APD US), said its directors disagreed over the minimum price they would accept for the company, after earlier stating they were unanimous.
American Superconductor Corp. (AMSC US): The maker of wind- turbine components and transmission lines may be overvalued as wind-turbine inventories at its Chinese customer Sinovel increase, Barron’s said, citing no one.
Colonial Properties Trust (CLP US): The owner of office properties said it may sell shares equivalent to as much as $100 million.
Exco Resources Inc. (XCO US): Billionaire Wilbur Ross acquired 7.5 percent of the oil and natural-gas explorer and wants to discuss “extraordinary corporate transactions” such as a merger or asset sales, according to a filing.
GFI Group Inc. (GFIG US): The New York-based inter-dealer broker of derivatives and securities said it will pay a special dividend of 25 cents a share to shareholders on record as of Dec. 20.
Horace Mann Educators Corp. (HMN US): The company that sells auto insurance to public-school employees boosted its quarterly dividend to 11 cents a share, more than the Bloomberg forecast of 10 cents a share and up 38 percent from the third quarter dividend.
Huntington Bancshares Inc. (HBAN US): The Ohio bank that has yet to repay $1.4 billion in U.S. bailout funds said it’s selling $920 million of shares.
Mattel Inc. (MAT US): The toymaker may rise 20 percent or more in the next year on demand for its popular brands, such as American Girl dolls, Disney character products and Monster High dolls, Barron’s reported.
Plains All American Pipeline LP (PAA US) and Western Gas Partners LP (WES US): The two master limited partnerships may rise as their fee-based business expands. Jeremy Tonet, an analyst at UBS Financial Services Inc., has Plains All American at $71 in 2011 and Western Gas at $32, Barron’s reported. Plains All American closed at $61.50 and Western Gas closed at $29.39 on Dec. 10.
W&T Offshore Inc. (WTI US): The oil and gas company said it will pay a special dividend of 66 cents a share to shareholders on record as Dec. 21.
To contact the editor responsible for this story: Nick Baker at email@example.com.