Pasha Pechenkin Last summer, I believed that Aspen Aerogels (NYSE:ASPN) was not insulating investors from the cold, like its products are supposed to do. The company after talked about its promise, but that did not convince investors as it took a long time to show up in the results. With the business having seen runaway sales growth, but moreover operating leverage in recent quarters, investors have gotten a lot more faith into the story, for good reasons. I like the business and prospects, even after an im ...