As the US markets open post holiday after a remarkable close last week, there are a few newsworthy items investors should keep their eyes on: Travel giant Expedia agrees to purchase Wotif.com for $658 million to strengthen its hold on the Asia-Pacific travel market. The IMF states that public aid should be ramped up in certain economies to bolster national growth. Her exact words: "In the current context of a weak growth outlook and low borrowing costs, a judicious stimulation of public investment can give growth the necessary impetus, above all in advanced economies," Ms. Lagarde said at the Rencontres Economiques conference in the south France.Switzerland and China sign a free trade agreement to strengthen ties with the world's second largest economy.AUD Job Advertisements and Construction Index strongly beat estimates.For full news updates and economic/market performance, visit: http://whotrades.com/markets