SIFCO Industries, Inc.’s (SIF) investors have been experiencing some short-term gains from the stock of late. Shares of the Cleveland, OH-based manufacturer of forgings, sub-assemblies and machined components (primarily serving the aerospace and energy or A&E markets) have surged 77% in the past six months compared with the industry’s 5% rise. The stock also outperformed the sector and the S&P 500’s 4.9% and 18.4% gains, respectively, in the same time frame.A major development of SIF in recent months includ ...