Aspen Aerogels, Inc. (ASPN) vs Perma-Pipe International Holdings, Inc. (PPIH)

Aspen Aerogels, Inc. and Perma-Pipe International Holdings, Inc. are both Building Products & Equipment companies. Aspen Aerogels, Inc. is the larger, with a market value of $440.7M against $256.0M — 1.7× the size. Aspen Aerogels, Inc. has negative trailing earnings, so its P/E is not meaningful; Perma-Pipe International Holdings, Inc. trades at 16.5×. Perma-Pipe International Holdings, Inc. grew revenue faster over the last twelve months: 24.8% against −49.1%. Perma-Pipe International Holdings, Inc. has the higher net margin (6.89% vs −62.5%) and the higher return on invested capital (18.0% vs −58.1%). Across the 20 metrics below, Perma-Pipe International Holdings, Inc. leads on 14 and Aspen Aerogels, Inc. on 6.