FXCM - The currency broker plummeted after providing further details on its rescue loan after last week's unexpected removal of the cap on the Swiss franc.
Express - The apparel retailer fell after it said it had ended discussions with Sycamore Partners about being acquired.
Staples The office-supply chain and rival Office Depot both lost ground as activist-investor Starboard Value called for their merger.
Denbury Resources - The energy company and others including Southwestern Energy, Range Resources and Apache declined with the price of oil.
American Airlines Group - The carrier and competitors including United Continental Holdings, and Southwest Airlines gained as Delta Air Lines reported better-than-expected quarterly earnings.
Intel - The maker of computer chips fell after JMP Securities downgraded the stock to "underperform" from "market perform."
Illumina The maker of life-science tools soared after an article in BioCentury speculated a large genomics project could be announced during President Barack Obama's State of the Union address Tuesday night.
Jarden - The maker of camping, fishing and other outdoor products rose after reporting better-than-expected preliminary results for its fourth quarter.
The Cheesecake Factory - The restaurant operator gained after William Blair upgraded the stock to "outperform."
Altria Group - The cigarette company advanced after Wells Fargo upgraded the stock to "outperform" from "market perform."
BJ's Restaurants - The casual-dining company rose after Keybanc upgraded the stock to "buy" from "hold."
(See CNBC's Market Insider Blog)
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