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Option Block 471: Oprah vs. Howard Stern Options Blowout

Trading Block: Oprah buys 10% of Weight Watchers, stock soars. Also, earnings!

Walmart (WMT) stock plunged 10% last week on sharply lower guidance from the company.

Analysts expect Amazon (AMZN) to report a 21% jump in revenue compared with the year-ago period.

Yahoo (YHOO) is also expected to notch a 15% jump in revenue. Analysts are betting on Microsoft (MSFT) and IBM (IBM) to maintain reasonably healthy profits amid falling revenue, while American Airlines (AAL) is likely to see a big jump in earnings on plummeting fuel prices.

Odd Block: Calls trade in Santander Consumer USA (SC), calls…

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