Semiconductor maker Xilinx, Inc. (XLNX) is seeing unusual Call activity this morning with investors opening new positions in the near month May contracts.

Visa Inc. (V) sees early Call activity this morning on the heels of main competitor MasterCard's better than expected first quarter earnings release.

Aetna Inc. (AET) shares spiked to a new 52 week high of $40.15 during the first few minutes of trading this morning and are now trading at their highest level since September 2008.

Microsoft Corp. (MSFT) is seeing interesting Call activity this morning ahead of Thursday's Q3 earnings release with investor opening new Bullish positions in the April 26 strike weekly options.

SanDisk Corp. (SNDK), the developer/supplier of flash data storage products, will be releasing their Q1 earnings and forecast after the bell today and option investors look to be taking a Bullish stance on the company's release.

Teva Pharmaceutical Industries (TEVA) shares are down 6.7 % this morning following positive clinical trial results from competitor Biogen Idec Inc. (BIIB) multiple sclerosis drug.

The Cheesecake Factory Inc. (CAKE) will be releasing its first quarter earnings results after the close today and option activity suggests that investors are looking for an upside surprise.

Citrix Systems, Inc. (CTXS) is seeing unusual Bearish Put activity this morning with the May 70 strike already seeing more than 5,000 contracts change hands.

Chelsea Therapeutics International Ltd. (CHTP), the Charlotte, NC-based biopharmaceutical development company, sees its shares trading 23% higher this morning following news that the company will be filing a new application for its Parkinson's drug Northera.

Cheniere Energy, Inc. (LNG), the Houston, TX-based developer/operator of onshore liquefied natural gas, sees a Bullish Call buyer this morning.

Lockheed Martin Corp. (LMT) has seen its shares drop as much as 5.6% following President Obama's presentation of his debt plan which, among other things, included defense spending cuts.

Broadcom Corp. (BRCM) sees early Put buyers this morning with the May 40 Bearish option receiving a majority of the attention.