MKS Instruments (MKSI): The Shovel of Shovels in the Semiconductor Buildout

The Real Infrastructure Hiding Behind Nvidia

When you stare at Nvidia's chart long enough it is easy to forget one thing - making a single chip requires an absurd amount of precision equipment. ASML's EUV tools are well known. What is much less well known is who makes the precision components inside those EUV machines.

That is where MKS Instruments (MKSI) sits. The cleanest analogy I have heard: if Nvidia is the race car and ASML is the factory that builds the race car, MKS makes the wrenches the factory uses.

No wrenches, no factory. No factory, no race car.

What MKS Actually Sells

Four product buckets matter.

1. Mass Flow Controllers

Semiconductor processes need extraordinarily precise gas flows. To form a clean circuit pattern you need to dose gases at the molecular level over time. MKS is a top-tier global player in mass flow controllers.

2. Vacuum Systems

Most wafer processing happens inside a vacuum chamber. MKS supplies the pumps, gauges and valves that hold and measure that vacuum. Every fab needs them by the thousands.

3. Industrial Lasers

MKS has a substantial photonics and laser business. Industrial lasers used in advanced packaging and micro-machining are likely to be the next big chip-industry bottleneck.

4. Specialty Chemicals

After the Atotech acquisition, MKS owns the specialty chemicals stack used in plating, etching and coating. That ties directly into advanced packaging - the area chip industry leaders are now pouring capex into.

Why It Is the Shovel of Shovels

In every semiconductor boom you hear "buy the shovels, not Nvidia." Those shovels are ASML, TSMC, Applied Materials, Lam Research and similar.

But those companies need parts too. ASML cannot build an EUV system without vacuum, optics, metrology and gas control. MKS is one layer deeper. It sells into the shovel makers themselves.

The beauty of that position is that no single fab, no single equipment vendor and no single country is decisive. Whether Intel ramps Arizona, TSMC ramps Japan, Samsung ramps Texas or new fabs come online in India, MKS sells into all of them.

Where We Are in the Capex Cycle

MKS's business is cyclical. When fab construction is in a wave, revenue surges. When construction slows, revenue plateaus.

We are likely at the late stage of the down phase. The memory cycle has bottomed and is recovering. The US, Europe, Japan, Korea and India are simultaneously pursuing chip sovereignty policies. National governments are committing hundreds of billions in subsidies. Once that capex translates into orders, companies like MKS are first in line.

Valuation: Not Cheap, Not Insane

MKS is not a value stock at the current multiple. But it is also not at an AI-bubble multiple. If you enter early in the cyclical recovery, the price is reasonable. The P/E may not compress further, but EPS growth following a capex wave can justify the current multiple on its own.

Signals I Watch Weekly

Two numbers in particular.

First, the order backlog at Applied Materials, Lam Research and ASML. When that starts growing again, MKS revenue typically follows one quarter later.

Second, memory pricing. As DRAM and NAND prices recover, memory makers expand capex, and that capex pulls MKS orders along with it.

One More Thing

For a portfolio that already has plenty of direct AI exposure, MKS offers a different layer - infrastructure of the infrastructure. Thousands of process steps stand between a wafer and a finished Nvidia chip, and MKS sells parts at most of those steps. This is less a bet on Nvidia winning and more a meta-bet that, regardless of who wins, the world will produce more chips.