Stocks Slid After 4-Day Rally (HUM, MSFT, BKS, SCHL, NYX, WPI, XOMA, VVUS)

U.S. Stocks opened lower on Monday after a four days of rise as data showed Americans only slightly increased spending and Spain slipped into recession.The Institute for Supply Management-Chicago's business barometer fell to 56.2, coming in below forecasts but still above the 50 level that signifies expansion.The Dow Jones industrial average fell 37 points, or 0.30%, at 13,191.38. The Standard & Poor's 500 Index lost 7 points, or .50%, at 1,396.38. The Nasdaq Composite Index declined 18 points, or 0.57%, at 3,051.64.Spain's economy fell into recession in the first quarter as deep government spending cuts to reduce a massive deficit and troubles in the banking sector likely delayed any return to growth.

Humana Inc.(NYSE:HUM) shares slumped 7.32% after the company posted  a lower than estimated first quarter profit. The company earned $248 million, or $1.49 per share, from a year ago profit of $315 million, or $1.86 per share, missing analysts estimates of $1.53 a share. Revenue came at 10.2 billion, slightly higher analysts’ forecast of $10.14 billion.Barnes & Noble, Inc.(NYSE:BKS) shares soared 66% after Microsoft Corporation (NASDAQ:MSFT) will invest $300 million in a new subsidiary that combines the bookseller’s Nook digital reader and college businesses.
The investment will give Microsoft about 18% of the unit, which has yet to be named, New York-based Barnes & Noble said today in a statement. The bookseller will own the remainder of the business, which has a valuation of $1.7 billion.
Scholastic Corp(NASDAQ:SCHL) slid 2.07% after rising earlier in the session despite the company boosted its full year guidance. The company now projects to earn $3.40 per share, compared to the prior guidance of a range of $2.60 to $2.90 per share.

NYSE Euronext(NYSE:NYX) lost 5.13% after the company reported a steep decline in its s first quarter profit. The company earned $87 million on revenue of $601 million. Operating earnings per share were 47 cents, missing analysts’ expectation of 48 cents a share.Watson Pharmaceuticals, Inc.(NYSE:WPI) shares slid 1.71% after hitting a new 52-week high earlier in the session despite the company reported a higher-than-estimated first-quarter earnings driven by strong revenue with additional support from new generic drugs and as its branded pharmaceuticals and distribution business.The company posted net income of $54.8 million, or 43 cents a share, up from $44.8 million, or 36 cents a share. On an adjusted basis, the company earned $1.64, topping analysts’ view by 4 cents.VIVUS, Inc.(NASDAQ:VVUS) shares are down 3.27% ahead of its earnings today after the market hours.XOMA Corporation(NASDAQ:XOMA) climbed 7.20% on takeover rumors. French partner Les Laboratoires Servier has given Xoma a measure of stability since a high-profile diabetes drug failure last year, and the collaboration also is fueling speculation that it ultimately will buy Xoma

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