Nightly Business Report — July 25, 2014

Tonight on Nightly Business Report, stocks end the week lower, but will a jam-packed economic agenda next week change sentiment? And, why Sovaldi, the breakthrough Hepatitis C drug, is creating a big headache for both states and health insurers.

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I am home from the hospital now. It’s really wonderful to be in a more serene environment for recovery. I am so happy to be finished with the chaos and hustle bustle of dealing with doctors, nurses and other hospital staff. But now the hard part begins. No, I’m not talking about the healing and …

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Today’s stock stories: LOCO, SWK, ABBV, XRX, SWFT & DAL.

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Disappointing earnings put Amazon.com shares on track for its worst day since October 2011 on Friday—but to one Wall Street analyst, the stock is struggling because investors are simply fed up with the Internet retailer’s lack of revenue growth. “This still is a large e-commerce company at its core and one that continues to take gross profit …

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As the chairman of the department of tourism, recreation and sport management at the University of Florida, Michael Sagas had a pretty good idea what to expect when his daughter started playing travel soccer. But even he was taken aback by the tally when her team started playing in regional and national tournaments. Her latest …

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There are several ways to track the ups and downs of the value of the U.S. dollar in relation to other currencies around the world. At The Economist magazine, they head down to the nearest McDonald’s and order a Big Mac. And according to the latest reading of the Big Mac Index, the value of the dollar is …

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To cut medical bills, consumers should take a leaf from their strategies for other big purchases: Shop around. Doing so can have a substantial payoff. A Change Healthcare analysis released this spring found that prices can vary by more than 300 percent on the same service, even within a given insurer’s network of providers. (See …

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Alibaba's headquarters in Hangzhou, China.

Chinese companies have been pouring money into Silicon Valley in the past year, joining a parade of financiers seeking to participate in the latest Internet boom. In a market flush with cash, winning deals isn’t easy—ask any prominent venture capitalist. So when Alibaba was making its pitch to invest in U.S. video chat start-up Tango late last …

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The Las Vegas housing market is in transition, from a situation where investors were swooping up distressed properties to a market of more traditional, owner-occupant sales. While home prices are up nearly 19 percent from a year ago, they are still more than 40 percent off their peak, according to S&P Case Shiller’s latest home price report. …

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President Barack Obama said Thursday that American companies performing tax “inversions” are not doing right by their country. Obama said that these companies, which buy foreign firms to technically change their tax domicile to a country with a lower tax rate, benefit from America’s university system and infrastructure, but then turn around and “game the system.” …

CYNK Technology, the mysterious over-the-counter stock that at one point broke a $6 billion market cap, dropped roughly 80 percent in its first trades after a Securities and Exchange Commission halt. The SEC halted CYNK for two weeks following a massive rise in the stock’s value—it had been worth only a few cents per share in June, …

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Traders work the floor of the New York Stock Exchange.

U.S. stocks opened lower on Friday despite positive economic data as weak Amazon earnings and concerns over continued unrest in Ukraine and Gaza weighed on markets. Amazon shares dropped more than 10 percent in early trading, on track for its worst day since October 2011 and accounting for 95 percent of losses on the Nasdaq 100. …

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Chinese brides and Indian festivals will drive diamond demand into new year, the CEO of De Beers told CNBC, as the market for the precious jewel continues to rebound. The U.S. is by far the biggest diamond market in the industry that was worth $72.1 billion in 2012 but China and India are the fastest-growing, …

Home sales slump

Home builders got hammered last month. What’s ailing the housing market?

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Wal-Mart CEO Bill Simon speaks during a news conference in Washington.

Walmart U.S.CEO Bill Simon is leaving the company, the discount retailer announced Thursday. Greg Foran, president and CEO of Walmart China since March 2012, will take over the reins of Walmart U.S. from Simon on Aug. 9, the company said. Simon has been at the helm of Wal-Mart’s U.S. unit, which has struggled recently to deliver positive comparable …