TSMC and ASML report earnings this week, and both bull and bear cases for the tech trade are now on the table ahead of the numbers.

That framing comes from analyst previews compiled by Investing.com ahead of the two chip-sector bellwethers posting results. TSMC (the world's largest contract chipmaker) and ASML (the Dutch monopoly supplier of extreme-ultraviolet lithography machines, the tools needed to make advanced chips) are the two most-watched earnings in global semis.

The setup matters. These two companies sit at the top and the middle of the semiconductor supply chain, so their guidance tends to move the whole sector — equipment makers, foundry customers, and the AI trade broadly.

What does this change for investors?

What does this change for the average tech investor? Mainly, it sets the near-term direction of the AI hardware trade. TSMC's revenue trajectory and capacity commentary tell you how much silicon is actually shipping into AI datacenters. ASML's bookings and machine shipment outlook tell you whether chipmakers still expect to need more capacity a year from now.

The bull case, as outlined in the previews, rests on continued AI-driven demand — customers keeping foundry utilization high and placing equipment orders on schedule.

The bear case rests on the opposite risks:

• Demand softness outside AI (smartphones, PCs, autos) dragging on overall volumes
• Any hesitation in equipment orders, which would signal chipmakers turning cautious on future capacity
• Guidance disappointments amplifying a sector already priced for strong growth

Both companies have earnings dates this week, per the report. Neither the previews nor the headline attach specific consensus figures, so the trade here is about reaction to guidance rather than headline beats.

Watch three things when the numbers drop:

1. TSMC's revenue and margin outlook — the read on how much AI demand offsets weaker end markets
2. ASML's bookings — new orders are the forward indicator the market trades on, more than revenue itself
3. Management tone on 2025 spending — capex commentary from TSMC's customers flows directly through ASML's order book

The previews themselves, it's worth noting, don't declare a winner. They lay out both sides and let the prints decide. That's the honest position this week: two companies, two directions the sector could break, and very little room between them.