Here's one strategy that could protect against a modest pullback.
Guidant and Google are among the most active options.
Guidant sees interest after guiding lower.
Applied Signal Technology shares surge after the company's earnings top expectations.
Tibco Software, Research In Motion and Red Hat post better-than-expected results.
Retailer Christopher & Banks posts better-than-expected results, and sees margin improvement for the holidays.
Pfizer and Sirius are also actively traded.