ON Semiconductor's latest earnings report tells a tale of two businesses. According to Truist Securities, the chipmaker's upside came almost entirely from data center demand tied to artificial intelligence, while its two biggest markets—automotive and industrial—grew at a much more modest pace.
The investment bank said the company is in a cyclical recovery, pointing to signs like orders outpacing shipments and longer delivery times. But it also highlighted a clear mismatch: automotive, which accounts for roughly 49% of sales, and industrial, about 26%, both grew only in the mid-single digits year-over-year and came in below Wall Street's expectations.
What's driving the split?
ON Semiconductor, often called ON Semi, makes power management chips and sensors used in cars, factories, and increasingly in data centers. The AI boom has created a surge in demand for chips that help manage power in the massive server farms that train and run AI models. That part of the business is growing quickly.
But the company's traditional core markets are telling a different story. Auto sales have been uneven as automakers adjust to slower electric vehicle adoption and inventory corrections. Industrial demand has also been soft, with manufacturers cautious about spending amid economic uncertainty.
Truist noted that portfolio changes and production ramp-ups can make a rebound look uneven. In other words, the company is deliberately shifting its mix toward faster-growing areas, which can temporarily distort the overall picture.
Why this matters for investors
For everyday investors, the key takeaway is that ON Semi is not a pure AI play. While the data center segment is grabbing headlines, the bulk of its revenue still comes from markets that are growing slowly. That means the stock's fortunes are tied to both the AI boom and the health of the broader industrial and auto sectors.
This dynamic is playing out across the chip industry. Companies that supply AI infrastructure are seeing strong demand, but those with heavy exposure to traditional end markets are more vulnerable to cyclical downturns. Cummins also saw AI data center demand boost sales but missed profit expectations, showing that even companies benefiting from AI can face other pressures.
The scale of AI investment is staggering. Big Tech's AI data center leases have reached $1.16 trillion, according to Reuters, underscoring how much money is flowing into this space. That demand is lifting a wide range of suppliers, from chipmakers to power equipment makers.
What to watch next
Investors will be watching whether ON Semi's data center growth can continue to offset weakness in its core markets. The company's ability to ramp up production of AI-related chips will be key, as will the pace of recovery in automotive and industrial demand.
Truist's comments suggest the company is in the early stages of a cyclical upturn, but the path may be bumpy. For those considering ON Semi stock, it's important to understand that the AI story is real, but it's only part of the picture.
Other companies are also benefiting from AI-driven demand. Qnity Electronics raised its outlook as AI data center demand drove a 30% jump in interconnect sales, and Rockwell lifted its 2026 profit forecast on steady factory demand. These examples show that AI is reshaping the industrial landscape, but traditional cyclical factors still matter.
The bottom line
ON Semiconductor's latest quarter is a reminder that not all growth is created equal. The AI data center boom is real and powerful, but it hasn't yet lifted the company's core markets out of their slow-growth phase. For investors, the question is whether the AI tailwind can eventually pull the rest of the business along, or whether the mismatch will persist.
As always, it's wise to look beyond the headline numbers and understand where a company's revenue actually comes from. In ON Semi's case, the story is still very much a work in progress.
