Piper Jaffray analyst Alex Zukin recommends using the post-earnings selloff in shares of Cornerstone OnDemand as a buying opportunity. Cornerstone delivered a strong Q4 report that saw subscription revenues outperform guidance and annual recurring revenue end the year at the high end of guidance, Zukin tells investors in a research note. He attributes the pullback in shares to 2019 operating margins and unlevered free cash flow guidance coming in below consensus. However, the outlook is conservative and offers "multiple options for upside," says Zukin. He keeps an Overweight rating on Cornerstone OnDemand with a $68 price target.