Gold miner Gold Fields Ltd. (GFI) sees a Bullish Call buyer appear this morning with the focus on the August 14 strike options.

IMAX Corp. (IMAX) shares have had a tough week, dropping as much as 16%, following a downgrade of movie theatre companies at Janney Capital Markets on Tuesday.

Agricultural processor Archer Daniels Midland Co. (ADM) is seeing unusual Call activity today following news that the company was mentioned by Warren Buffet as the "kind of company we look at".

Semiconductor maker KLA-Tencor Corp. (KLAC) shares are trading up almost 5% today following an upgrade from "Neutral" to "Buy" at UBS.

Amkor Technology, Inc. (AMKR), the Chandler, AZ based semiconductor testing and assembly company, sees a Bullish option activity early in today's session with the August 6 Call receiving a majority of the attention.

Zagg Inc. (ZAGG), the maker of computer and cell phone accessories, is seeing early Bearish Put activity with the focus on the soon- to -expire 11 strike options.

International Game Technology (IGT), the casino-style slot machine manufacturer, is seeing Bullish option activity today with investors focusing on the August 19 Calls.

Unusual option activity this morning in farm and ranch supply retailer Tractor Supply Co. (TSCO) with more than 7 times the company's average daily contract volume changing hands during the first half of today's session.

WebMD Health Corp.(WBMD) shares hit a new 52 week low of $42.62 this morning and it looks like at least one investor sees value in shares at this level and is using August options to open new long positions.

Drug maker Dendreon Corp. (DNDN) saw its shares rise as much as 1.9% this morning following news that they had received regulatory approval for the opening for its Los Angeles manufacturing plant.

U.S. Steel Corp. (X) shares are benefiting from a ratings upgrade at Deutsche Bank this morning from "Hold" to "Buy" citing a probable rise in both demand and prices for the [[meta]]l.

Nexen Inc. (NXY) the Calgary, Canada based independent energy company, is seeing unusual Bullish option activity this morning with a multi-exchange sweep of 6,000 September 20 Calls.