Wolfspeed (WOLF) Stock Plunges 15% on Massive Earnings Miss

Wolfspeed (WOLF) shares crashed over 15% in morning trading Thursday after the company reported fiscal Q4 2026 results that were far worse than even the most pessimistic forecasts. The silicon carbide chip maker posted a loss of $2.26 per share, a staggering four times larger than the $0.52 loss analysts had expected. Revenue came in at just $149.6 million, missing the $223.6 million consensus estimate by a wide margin.

To put this in perspective, revenue plunged 24% year over year, and the company reported a negative gross profit margin of 25%. That means for every dollar of sales, Wolfspeed lost $1.25 before even accounting for operating expenses. On a GAAP basis, the loss was even wider, though the company didn't provide the exact figure in the report.

The company's guidance for the current quarter (fiscal Q1 2027) was equally grim: management expects revenue of about $150 million, which is essentially flat compared to Q4. This suggests that the momentum they had been touting in AI data center revenue has suddenly stalled.

Investors are clearly losing patience with a company that has seen its revenue decline for four consecutive years. The stock's sharp drop reflects a growing belief that the turnaround story is not materializing as hoped.

Wolfspeed has been positioning itself as a key player in the AI revolution, specifically in power modules for data centers. In the earnings release, management highlighted that AI data center revenue more than doubled year over year in fiscal 2026 and grew 20% sequentially in Q4. However, the flat guidance for Q1 2027 suggests that this growth engine has suddenly sputtered.

For investors, this is a red flag. If AI demand were truly accelerating, you'd expect management to guide for sequential growth, not a plateau. The fact that they're guiding flat indicates that either they're being overly conservative or the AI orders have slowed down. Either way, it undermines the bull case for the stock.

Moreover, the company's financial health is deteriorating. With negative gross margins, Wolfspeed is burning through cash at an alarming rate. The company has been investing heavily in new manufacturing capacity, but if revenue isn't growing, those investments will only deepen the losses.

Competitively, Wolfspeed faces intense pressure from larger rivals like Infineon and STMicroelectronics, who have deeper pockets and more diversified product lines. Wolfspeed's focus on silicon carbide is a double-edged sword: it's a promising technology, but the company lacks the scale to weather a prolonged downturn.

Looking ahead, the stock's future hinges on whether the AI data center story can regain momentum. If it doesn't, Wolfspeed could face a liquidity crisis, potentially leading to dilutive capital raises or even bankruptcy risk.