Investors might want to bet on Helios Technologies (HLIO) , as earnings estimates for this company have been showing solid improvement lately. The stock has already gained solid short-term price momentum, and this trend might continue with its still improving earnings outlook. The upward trend in estimate revisions for this maker of screw-in hydraulic cartridge valves and manifolds reflects growing optimism of analysts on its earnings prospects, which should get reflected in its stock price. After all, empi ...