Security vendor Palo Alto Networks rallied 16 percent last week on a rosy revenue outlook, cutting in half the stock's loss for the year.
Questioned about the global economy, CEO Mark McLaughlin told analysts about his travels in January to Europe and Asia.
"The customers that I talked with said that security remains a priority spend item for them," he said. "We haven't seen anything to indicate that what we're seeing in the stock market means anything about the macro economy yet."
Read MoreGrowth of Palo Alto Networks
Not all tech results were uplifting, however. Fitbit, the maker of fitness tracking devices, tumbled 22 percent last week and is down almost 60 percent for the year.
After a splashy IPO in June, the San Francisco-based company has struggled to meet growth expectations and is now bolstering spending on marketing and research and development.
Five analysts downgraded their ratings, according to FactSet, including Piper Jaffray's Erinn Murphy, who lowered her recommendation to neutral.
"While there are long-term positives around FIT's role in the digital health arena, some of these benefits are still intangible and we need to see better visibility on sell-through of new product and consumer engagement," Murphy wrote.