Facebook remains the best risk/reward in large cap internet given the potential for core engagement to stabilize, for monetization in the Stories format to drive a potential re-acceleration in growth in mid-2019, for the negative news cycle to abate and given the "extremely attractive" current valuation, Deutsche Bank analyst Lloyd Walmsley tells investors in a research note. The analyst is encouraged that on top of Facebook's "relatively aggressive" share buyback to-date, the board expanded the repurchase authorization again by an additional $9B. He reiterates a Buy rating on Facebook shares.