The Semiconductor Equipment Kings (But Not the Ones You Think)

If you’ve been following the AI trade at all, you’ve probably noticed how crowded the semiconductor equipment names have become. Lam Research, Applied Materials, KLA — everyone seems to be talking about them. And for good reason: they’re the obvious beneficiaries of all the AI-related capex happening right now.

But here’s what I’ve been thinking lately: the real edge in this whole semiconductor buildout might actually be sitting one layer below what most people are looking at.

Let me explain.

When you build the most advanced chips in the world — the ones powering AI training clusters and the next generation of models — the machines (the etchers, depositors, and inspection tools) obviously matter a lot. But those machines don’t work in a vacuum. They need an entire ecosystem of ultra-specialized materials and consumables to function at the level required for High-NA EUV, gate-all-around transistors, and the other crazy processes we’re moving toward.

And that’s where things get interesting.

Because while everyone is focused on the big equipment companies, there’s a whole set of smaller, less-followed businesses making the actual “secret sauce” that makes leading-edge manufacturing possible. Things like advanced photoresists (especially the new metal-oxide versions needed for High-NA), ultra-high-purity chemicals for wafer cleaning, specialty filtration and delivery systems, and other niche materials that get consumed on every single wafer.

These aren’t the flashy parts of the story. But they tend to have a few characteristics that I really like from an investment perspective:

They’re often extremely sticky once they’re qualified at a leading fab. Switching costs are enormous.
They generate more recurring revenue because they’re consumables, not one-time equipment purchases.
And many of them operate with very high gross margins because of how technically difficult and IP-protected these materials are.

The shift to High-NA EUV and more complex transistor architectures is actually accelerating demand for entirely new classes of these materials. It’s not a one-time transition — it’s a multi-year wave of new qualifications and process changes. And most of the companies that dominate these specific niches are not the household names in the semiconductor equipment world.

I’ve been spending time digging into this layer of the stack because it feels like one of those classic “picks and shovels inside the picks and shovels” situations. The big equipment makers get the headlines. But the businesses enabling the actual process at the atomic level are where a lot of the durable economics might end up sitting.

Of course, not everything in this part of the supply chain is equally attractive. Some areas are more competitive than others, and qualification risk is always real. But a handful of companies stand out as particularly well-positioned — both because of their technology and because of how the industry is evolving right now.

That’s what I want to break down properly in the full edition.

If you want the complete picture — including the specific companies I’m looking at most closely in these niches right now, why they’re structurally advantaged, what the risks actually are, and how I’m thinking about positioning — you can read the full research as a Premium member.

It’s the kind of deep dive I only do for the paid side because it includes actionable details and ongoing updates as the High-NA ramp and new node qualifications progress.

You can upgrade here if that’s interesting to you.

Otherwise, thanks for reading the free part. I hope it gave you a slightly different lens on where the real complexity (and opportunity) sits in the semiconductor supply chain right now.