Oppenheimer expects "upward pressure" on Callidus' bookings this year, driven by recent sales hires, a scaling channel and new products. The firm thinks the company will benefit from an expanding sales optimization market over the longer term, and it estimates that the company's EPS and free cash flow will increase 25%-30% annually over the next one to three years. Oppenheimer thinks the stock is poised to rally in the short-term after pulling back since December, and it believes that the shares could double by 2018. It keeps a $22 price target and Outperform rating on the shares.