Monolithic Power beats Q3 estimates, yet shares slip after hours
The AI-power chipmaker posted record sales and a clean beat, but Wall Street's reaction shows how high expectations now sit for the sector.
Monolithic Power Systems, a US maker of power-management chips used in AI servers, reported third-quarter 2026 results that beat Wall Street's forecasts, but its stock still fell. Adjusted earnings came in at $8.19 per share against an estimate of $7.71. Revenue was $1.2 billion against the $1.15 billion expected, up 63% from a year earlier and 22% from the previous quarter.
The share price tells the other half of the story. The stock closed the regular session at $1,198.81, down 1.02% from $1,211.22, then slipped another 2.63% in after-hours trading to $1,167.28. That is roughly 3.6% below the prior day's close. It is a familiar pattern in a hot sector: when a stock has run hard, a good number can be treated as already priced in, and investors start asking what comes next.
The underlying numbers are strong. Management said enterprise data, the business tied to data-centre computing, is growing fast enough to support a higher floor of 150% year-on-year growth. Year-to-date growth is tracking at a 50% to 60% annual rate. Gross margin rose by 10 basis points in the quarter, with another 10 basis points expected in the fourth quarter. Operating margin has been improving by about one percentage point a quarter.
The company also spent more than $450 million on share buybacks in the quarter. Distribution inventory sat at the low end of the normal five-to-eight-week range, and internal inventory fell to 117 days on a forward revenue basis. Both are signs that supply is not piling up faster than demand. Management pointed to module-based power delivery products, which carry higher content and selling prices, as one reason for the strength.
For readers of our markets briefing, the takeaway is about how global tech sentiment is behaving. AI systems need more power and more advanced power architectures, and that demand is lifting companies well beyond the headline GPU names. Even so, the market is no longer rewarding a beat on its own. The shares still trade well above their 52-week low of $833.18, though below the high of $1,714.09, so the bar for the next quarter's outlook is high.
Indian investors who follow US chip stocks, or who watch how global AI spending feeds into electronics and data-centre supply chains, should treat the post-earnings dip as a reminder to look past the first headline. The business is growing quickly, and investors are now debating how long that pace can last. Source: Investing.com earnings call transcript coverage.