MKS Prints a Blowout While the Tape Votes No
Record margins, 43% growth, bookings into 2028 — and a stock down 57% in 90 days. The gap between the income statement and the price is the whole story.
MKSI · Earnings Call · 2026-11-05
The quarter that should have been a victory lap
On November 5, MKS Inc. delivered the kind of print that usually sends a semicap stock higher. Revenue of $1.41 billion, up 43% year over year. EPS of $4.18, more than doubled. A Q4 guide of $1.49 billion, up 44%. Operating margin of 27.8%, the highest in over eight years. And yet the stock sits 57% below where it traded 90 days ago and 60% below its June peak. That is the story: the income statement and the tape are screaming different things. John Lee did not sound like a CEO worried about demand. “Our guidance today points to a very strong finish to the year, with continued robust year-over-year revenue growth. Driven by unprecedented demand across our key end markets.” — John T. C. Lee, President and Chief Executive Officer · 2026-11-05 The word unprecedented is doing real work. Semiconductor revenue was $638 million, up 54% year over year. Electronics and packaging was $415 million, up 43%. Specialty industrial was $360 million, up 27%. Chemistry equipment sales rose more than 75% year over year, are sold out through 2027, and bookings now extend into 2028. Ramakumar Mayampurath put a fine point on it: “We expect revenue of $1.49 billion, plus or minus $40 million which represents a 44% growth over the prior year.” — Ramakumar Mayampurath, Executive Vice President and Chief Financial Officer · 2026-11-05 The last filed quarter showed $1.2 billion of revenue, up 28% year over year, and this report pushed the run-rate to $1.41 billion. The operating leverage is not theoretical. Operating income rose 86% year over year in the last filed quarter, and management guided Q4 operating income to $420 million at the midpoint.What is genuinely new — and what is just cycle
The freshest signal in the call is not another AI mention. It is pulse DC, which jumped to the No. 2 spot in the company's keyword trajectory. MKS won a pulsed DC power design for a significant conductive etch application at a leading foundry, displacing the incumbent. John was careful but clear: “This particular application is something we were not in. And is displacing the incumbent.” — John T. C. Lee, President and Chief Executive Officer · 2026-11-05 That is share gain, not just market growth. The same is true in laser drilling for rigid PCBs, where the company has historically been under-indexed and where the TAM is multiples of the flex market. Order volumes remain strong, but bookings into 2028 are exactly what a peak-cycle stock fears. The company also announced the sale of Ophir Optics to TTM Technologies, a divestiture that gives balance-sheet flexibility and shows the specialty industrial portfolio can be monetized. A new $500 million buyback followed. The balance sheet is no longer the constraint: net leverage was 2.4x, down 1.5 turns year over year, with over $450 million of debt prepayments year to date. Interest coverage has climbed to 6.6x.The overbuild question the tape is already answering
Jim Ricchiuti asked the question every AI hardware investor wants answered: at what point does the electronics and packaging capacity become overbuilt? John's answer rested on two observable facts rather than forecasts — that data centers being built are actually being turned on, and that the people building them are making money. He acknowledged the capacity add on the packaging side is easier than on the semiconductor side, but pointed to $54 million of quarterly capital expenditure — a 3% to 5% intensity — as evidence the expansion is not a bet-the-company exercise. The tape disagrees with the confidence. The global keyword tape shows AI data centers down more than 30% over 30 days with 11 advancers against 55 decliners; high bandwidth memory is down sharply over 90 days; co-packaged optics is down even more. MKSI's 57% drawdown is an extreme version of a sector-wide de-rating, not a company-specific rejection. The market is not debating whether MKS is winning — it is debating whether the AI capex curve stays this steep. That is a different bet.The subtle shift: from chemistry growth to equipment mix
One of the more interesting changes is linguistic. In the prior quarter, chemistry growth was a top-two company theme. In this quarter, chemistry equipment sales is the prominent phrase, while chemistry growth itself has slipped into the decliner list. That matters because the equipment is lower-margin than the consumables annuity that follows. Ram named the trade-off directly: “growing sales of lower margin chemistry equipment as well as cost incurred from the expansion of manufacturing capabilities” — Ramakumar Mayampurath, Executive Vice President and Chief Financial Officer · 2026-11-05. He had flagged the same dynamic three months earlier: “mix is unfavorable and will remain so as long as VSD and the chemistry equipment ramps.” — Ramakumar Mayampurath, Executive Vice President and Chief Financial Officer · 2026-08-06 The bullish read is that the equipment installs the future chemistry base. The bearish read is that near-term gross margin is capped just as the market starts questioning the capex peak.That tension shows up in the semi side, which is all capex, versus electronics and packaging, which carries a consumables component. John argued the semi side should outgrow E&P during the ramp. The market seems to be asking whether the ramp itself is late-cycle — a question made sharper by the fact that the data center buildout driving both segments is precisely what the tape has started to discount. The prior calls were uniformly confident. In August, John said customers had given MKS plans “much further out than normal.” — John Lee, President and Chief Executive Officer · 2026-08-06 In February, he reminded investors that “MKS has always outperformed during the upturn. That's just math.” — John Lee · 2026-02-18 Both statements remain true. But the stock is now pricing the end of the math.While we expect these headwinds to continue into next year, both are expected to become margin tailwinds longer term as chemistry consumables grow with our newly installed chemistry equipment and new capacity reaches full utilization.