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 trade in Sirius XM Holdings (SIRI), and uts trade in Weight Watchers Intl. (WTW).

Strategy Block: Tosaw discusses his most recent trading activities and why he has been staying away from bonds.

Mail Block: Listener questions and comments

• Question from ONV - Do you focus on all stock options that trade at large multiples, or is there some other way that you determine which names to analyze?

Around the Block: Google stands out amid low earnings expectations.