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STMicroelectronics supplies chips used in cars, industrial equipment, personal electronics, and communications and computing equipment. Equipment makers buy its products directly or through distributors, with direct customers providing most revenue. Analog products, sensors and optical sensing, together with microcontrollers and related processing products, account for most sales.
The company combines chip design and development with its own manufacturing, while outsourcing some wafer production, assembly and testing. This makes earnings depend not just on chip demand and selling prices, but also on keeping factories sufficiently busy: manufacturing costs cannot fall as quickly as sales when demand weakens. Customers can change quantities or prices, or cancel orders, between booking and delivery.
A substantial share of sales comes from a limited number of customers and distributors. Apple is its largest customer, so Apple's purchasing decisions matter even though STMicroelectronics serves many other buyers. Demand ultimately follows sales of customers' finished products. Export controls and trade restrictions can also limit which customers and markets the company can serve, particularly in China.
The risk section is the longest, dullest part of the filing. This keeps only what can really hurt you: where it hits, how hard, when it plays out.
Every company claims an edge. Each one is checked against hard numbers like margins and returns: which hold, and which line gives way first.
ST’s results hinge on automotive and industrial chip demand, Apple orders and power-chip pricing; watch Infineon, an important power and analog rival missing from this list.
ON Semiconductor competes with ST for automotive and industrial customers buying power devices, including silicon-carbide products, and analog chips. Its automotive and industrial sales are worth watching: those markets made up an estimated 51% and 28% of its 2025 revenue, respectively.
NXP competes with ST for automotive and industrial customers buying microcontrollers, processors, analog devices and connectivity chips. Watch its product launches and supply availability in those lines, where the two companies compete for equipment makers’ choices.
Texas Instruments competes with ST for electronics manufacturers’ spending on analog chips and processors built into their equipment. Its Analog and Embedded Processing segment results give separate views of those two areas of competition.
Microchip competes with ST to get its microcontrollers, microprocessors and analog chips chosen for control functions in industrial and automotive equipment. Its offering combines chips, software and services, so watch how that package competes for customers’ equipment designs.
Analog Devices competes with ST for electronics manufacturers’ analog and mixed-signal component orders. Watch its product-performance and reliability news, the qualities it emphasizes when competing for those customers.
Apple’s chip purchases directly matter to ST: it was ST’s largest customer, accounting for 17.7% of consolidated net revenue in 2025 across all four product segments. Apple sells phones, computers, tablets and wearables; changes in its device demand or component choices can affect ST’s orders.
Mobileye buys EyeQ driver-assistance chips that ST co-develops and either manufactures itself or has a partner foundry make. Mobileye’s sales of driver-assistance solutions are the line to watch for demand reaching ST’s automotive processing business.
Wolfspeed has two ties to ST: it supplies the silicon-carbide wafers ST uses to make chips and competes with ST in silicon-carbide power devices.
Tesla is a major ST chip customer, tying its electric-vehicle production and component choices to ST’s automotive semiconductor sales. Watch production and chip-selection news from Tesla’s business selling and leasing electric vehicles.
Allegro MicroSystems competes with ST for automotive and industrial customers buying chips that control motors and manage power. Its motor-driver and power-management chip sales are the relevant lines to watch, rather than its magnetic-sensor business.
Vishay competes with ST in components that switch and convert electrical power—MOSFETs and diodes. Watch those semiconductor product lines, not Vishay’s resistor, inductor and capacitor sales, for the direct overlap with ST.
Monolithic Power Systems competes with ST for power-management chip orders in automotive, industrial and consumer electronics. Watch sales to those three markets rather than its largest 2025 market, storage and computing, to follow this overlap.
Diodes competes with ST for electronic-equipment customers buying discrete, analog and mixed-signal semiconductors. Watch its manufacturing capacity and product-mix updates, which show how it is responding to those customers’ demand.
Power Integrations competes with ST in high-voltage power-supply ICs and motor-driver chips sold to equipment and power-supply makers, including through distributors. Watch its integrated designs, which combine several functions in one product to reduce customers’ component counts and design complexity.
Cirrus Logic and ST both supply components for Apple devices, while competing in audio and mixed-signal chips.
Silicon Laboratories competes with ST for IoT device makers’ orders for low-power chips that connect devices. Watch its Bluetooth, Wi-Fi and other wireless-chip sales for the part of its business that overlaps with ST’s connectivity products.
GlobalFoundries and ST make specialty semiconductors for overlapping end markets and collaborate on a joint manufacturing facility in France, linking their manufacturing plans as well as their markets.
Tower Semiconductor shares Agrate Fab 3 with ST, directly linking their investment in specialty-chip manufacturing capacity. Tower makes wafers for chip companies and module makers; updates on the shared fab are the concrete news to watch for ST.
Tesla, Inc. earningsTSLA
Tesla’s report will show how its electric-vehicle production and chip choices affect STMicroelectronics’ automotive chip sales.
Read Tesla’s vehicle production alongside its component choices. Higher production and continued use of chips STMicroelectronics co-develops would support demand through this customer relationship; lower production or a move to other chips would weaken that channel. The question is whether Tesla’s production and design choices continue to bring automotive-chip demand to STMicroelectronics.
NXP Semiconductors N.V. earningsNXPI
NXP Semiconductors’ report will show how automotive and industrial equipment makers are buying chips that it and STMicroelectronics both supply.
Focus on NXP’s chip sales into automotive and industrial markets. Stronger sales show that those shared markets have demand, but could also mean NXP is winning more customer designs; weaker sales could reflect softer demand or tougher competition. The conclusion is whether STMicroelectronics faces a change in shared-market demand or more pressure to win customers’ designs.
STMicroelectronics N.V. earningsThis company
STMicroelectronics’ report will show whether chip shipments and factory utilization can support sales and gross margin.
Read product sales alongside shipment volumes and changes in average selling prices and product mix, then compare them with gross margin. If shipments rise, sales stabilize and margin holds, customers are taking more chips and factories are spreading fixed costs more effectively. If sales fall, or margin weakens as factory utilization slips, pricing or mix is under pressure and capacity costs remain hard to absorb. The conclusion is whether STMicroelectronics is stabilizing its business through actual shipments and better factory efficiency, rather than price changes alone.
Apple Inc. earningsAAPL
Apple’s report will show how its device sales and chip choices affect revenue from STMicroelectronics’ largest customer.
Read Apple’s device sales alongside any indication that STMicroelectronics’ products remain in those devices. Strong device demand with continued use of ST products would support revenue across ST’s four segments; weaker demand or a switch to other components would put that important revenue at risk. The conclusion is whether STMicroelectronics continues to receive solid demand through Apple’s devices.
Tower Semiconductor Ltd earningsTSEM
Tower Semiconductor’s report may offer updates on the shared Agrate Fab 3 facility, which matters to STMicroelectronics’ manufacturing capacity.
Watch for Tower’s updates on Agrate Fab 3’s progress and capacity plans. Progress would indicate that shared factory capacity can come online as planned; delays or limits would make it harder for STMicroelectronics to put related production plans into effect. The conclusion is whether the shared facility can support ST’s manufacturing capacity on schedule.
Wolfspeed, Inc. earningsWOLF
Wolfspeed’s report will show how its silicon-carbide supply and device business may affect STMicroelectronics’ silicon-carbide production and competition.
Separate clues about Wolfspeed’s silicon-carbide wafer supply from results in its power-device business. Reliable wafer supply would help STMicroelectronics obtain an input for making its chips; constraints could interrupt that path. Strength in Wolfspeed’s own silicon-carbide power devices could also increase competition for customers. The conclusion is whether Wolfspeed is mainly a dependable supplier to ST, or a source of both supply risk and competitive pressure.
