Investors could be "significantly" undervaluing CAE stock, a Canadian aerospace training and simulation company, according to Goldman Sachs. In a recent report, the Wall Street investment bank reiterated a buy rating on CAE, which operates two primary businesses: civil aviation and defense. In the report, Poponak analyzed both CAE's civil aviation and defense businesses in isolation and compared to competitors. The civil aviation segment's growth and margin profile isn't accurately reflected in CAE's current valuation multiple, the analyst added. CAE's valuation seems to reflect that investors have assigned the defense business little to no value, Poponak wrote.

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Persons: Goldman Sachs, Noah Poponak's, Poponak, — CNBC's Michael Bloom Organizations: CAE, Wall Locations: Canadian, U.S