Take a look at some of the biggest movers in the premarket:

Carnival Corp. (CCL), Royal Caribbean (RCL), Norwegian Cruise Line (NCLH) – Cruise line stocks are under further pressure today after the U.S. State Department recommended that Americans avoid trips on cruise ships in an effort to contain the spread of the coronavirus.

Exxon Mobil (XOM), Chevron (CVX) – These and numerous other energy-related companies will see their stocks hit today on the plunge in crude oil prices.

Costco (COST) – The warehouse retailer suspended its popular free sample program at least some of its stores, according to USA Today. The suspension is another outgrowth of the concern over the coronavirus.

Amazon.com (AMZN) – Amazon is likely to succeed in a key argument of its challenge to the awarding of the so-called "JEDI" Defense Department contract to Microsoft (MSFT), according to a U.S. judge. Amazon has charged that Microsoft won the contract because of improper influence by President Donald Trump.

Tesla (TSLA) – A top Tesla shareholder told the Financial Times the company is "better run," after the hiring of independent directors to oversee CEO Elon Musk. The comments come from James Anderson, head of global equities for the automaker's biggest institutional investor, Baillie Gifford.

Uber Technologies (UBER), Lyft (LYFT) – Ride-sharing and food-delivery companies are in talks to set up a fund to compensate drivers affected by the coronavirus, according to The Wall Street Journal.

Walt Disney (DIS) – Disney's Shanghai Disneyland is resuming a limited number of resort operations today as virus infections slow, although the main theme park will remain closed for now.