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Most people have never heard of aerogel, an ultralight material that can block heat and flame in surprisingly thin sheets. Yet it sits at the center of a business that just staged a notable comeback. Aspen Aerogels, Inc. (NYSE: ASPN) designs and makes these materials for electric vehicle battery packs and for energy and industrial customers, and today its stock jumped more than 56% in early trading after the company reported second quarter results that landed better than many had feared.
The company’s products go by names like PyroThin, Pyrogel, and Cryogel. The one that matters most for its growth story is PyroThin, a thin barrier placed inside battery packs to slow the spread of heat if a single cell fails, a problem the industry calls thermal runaway. As automakers build more electric vehicles, demand for that kind of protection has grown, and Aspen has become a recognized supplier in that niche.
Getting to this point was not smooth. Earlier in 2026, a manufacturing incident disrupted operations and raised questions about how quickly the company could keep supplying its customers. Production was interrupted, and for a business that depends on steady output, any pause carries real risk. Aspen has since begun a staged restart of its East Providence, Rhode Island facility, and the latest results suggest that demand did not disappear while the plant was offline.
For the second quarter, total revenue came in at $49.8 million, up 32% from the prior quarter, even though it was lower than the $78.0 million recorded a year earlier. The standout was the Thermal Barrier segment, which houses the EV battery business. Its revenue rose 81% from the previous quarter to $29.5 million. The Energy Industrial segment, covering insulation for refineries and other heavy industry, brought in $20.4 million.
Management also gave investors a reason to look ahead rather than back. For the third quarter, the company guided revenue to a range from $65 million to $80 million, well above the level it just reported. It also expects adjusted earnings before interest, taxes, depreciation, and amortization, a common measure of operating profit, to land between $7 million and $15 million. Guidance that points sharply higher often does more to move a stock than the quarter being reported, and that appeared to be the case here.
Alongside the financial update came a commercial win that caught attention. Aspen said it had secured a PyroThin award from Jaguar Land Rover for two of the automaker’s next-generation vehicle architectures. For a supplier of this size, a program with an established global carmaker matters not just for the revenue it may bring but for the signal it sends to other potential customers weighing whether to sign on. Design wins in the auto industry tend to be sticky, since a component built into a vehicle platform often stays there for years
The market reaction was dramatic. Shares climbed more than 56% during the trading session, one of the largest single day moves the stock has seen. A jump of that size usually reflects more than a single data point. It suggests that expectations had fallen quite low after the earlier disruption, so evidence of recovering demand, a raised outlook, and a marquee customer together prompted a swift repricing.
Whether the momentum lasts will depend on execution: keeping the restarted plant running smoothly, converting awards like the Jaguar Land Rover deal into steady shipments, and hitting the guidance it has now set. Aspen offers a clear example of how a smaller materials company can swing sharply on a single quarter, rewarding patience when the underlying business proves more durable than the headlines around a setback had implied.
