ASML and TSMC will report quarterly earnings this week, giving investors the clearest read yet on whether demand for leading-edge chips and the equipment that makes them is holding up.

The two companies anchor the weekly tech watchlist compiled by Stocktwits, alongside Apple, which is reportedly preparing its next play for the connected home.

Why do ASML's numbers matter first?

ASML, the Dutch monopoly supplier of extreme ultraviolet (EUV) lithography systems, reports ahead of its Taiwanese customer. Every advanced logic fab that TSMC, Samsung or Intel builds depends on ASML's tools, which makes the company's bookings and shipment guidance a leading indicator for the entire semiconductor capital cycle.

Traders on Stocktwits will watch two lines in particular: new system bookings, which signal how far out foundries have committed to capacity, and management's commentary on China sales, where export controls have repeatedly forced the company to revise its outlook.

What should investors look for in TSMC's report?

TSMC, the world's largest contract chipmaker, follows with its own results. The company manufactures the most advanced processors for Apple, Nvidia, AMD and Qualcomm, so its revenue and margin figures effectively price the health of high-end silicon demand across smartphones, data centers and AI accelerators.

Key questions for the call:

• Whether smartphone and PC demand has stabilized after a prolonged inventory correction
• How fast AI-related silicon is filling advanced-node capacity
• Any update on capital spending plans, which flow directly back to ASML and other equipment makers

Because TSMC sits at the center of the electronics supply chain, its utilization and pricing commentary often moves the entire semiconductor sector within minutes of release.

What is Apple's next home play?

The third item on the watchlist is Apple's reported push into a new smart-home device. Details remain limited, but the category has drawn fresh attention as rivals race to put voice assistants and AI-powered hubs into living rooms.

Any new Apple home hardware would add a new product family to a portfolio still heavily concentrated in the iPhone — and, in time, another source of orders for TSMC's foundry lines.

How do the three stories connect?

The thread running through the week is end-demand visibility. Apple's device plans shape what TSMC must fabricate; TSMC's capacity decisions shape what ASML must ship. When all three companies appear on a single watchlist, the market is effectively pricing one chain of demand, link by link.

Analysts and retail traders alike will parse this week's earnings for confirmation that the AI-driven upcycle in advanced silicon remains intact — and for any sign that consumer weakness is spreading up the stack into foundry utilization and tool orders.

Whatever ASML and TSMC say about bookings, utilization and 2025 spending plans will set the tone for semiconductor equities through the rest of the quarter.