Dow Aims For 20th Consecutive Tuesday Gain

The holiday-shortened trading week begins with the Dow aiming for an unprecedented 20th straight Tuesday gain, although traders are likely to be in a Monday-like mood after having yesterday off. Friday's session saw the averages little changed though finishing at the highs of the day.

Investors will get a look at fresh housing data before the market opens this morning, with the monthly Case-Shiller report on home prices due out at 9 a.m. ET. Economists expect the report to show a 10.3 percent jump in home prices for March compared to a year earlier for the 20-city index, following a 9.3 percent year-over-year gain in February.

At 10 a.m. ET, the Conference Board's May consumer confidence index is seen coming in at 72.0, compared to April's 68.1.

Royal Caribbean (RCL) leads our list of stocks to watch, after the company had to cut a Grandeur of the Seas cruise short because of a fire on board. It's also canceled the May 31st sailing to repair the damage.

Chevron (CVX) is lending $2 billion to a joint venture with Venezuela's state-run oil company. Chevron has a 40 percent stake in that venture, with the loan aimed at boosting production.

Omthera Pharmaceuticals (OMTH) is being bought by AstraZeneca (AZN) in a $443 billion deal. The per-share price of $12.70 is an 88 percent premium to the heart drug specialist's closing price on Friday.

Valeant Pharmaceuticals (VRX) is buying Bausch & Lomb from private equity firm Warburg Pincus for $8.7 billion in cash. Valeant is seeking to strengthen its portfolio of eye care drugs, contact lenses, and ophthalmic surgical devices.

News Corp. (NWSA) is reviewing whether it has any record of a subpoena from the U.S. Justice Department for a Fox News reporter's phone records. DOJ said it informed the company about the subpoena in August 2010, but the company said it has no record of it.

Apple (AAPL) is at the center of an informal European Union antitrust investigation, with regulators asking mobile phone operators about Apple's sales tactics. The probe could become a formal one depending its findings.