Moog's Data-Center Cooling Pump Hits Escape Velocity — and a Tariff Refund Lands in the P&L

Moog's fiscal third quarter reads less like an incremental quarter and more like an inflection. The headline is unambiguous —

We delivered a robust third quarter with record sales up 15% on prior year. Our 12-month backlog was up 23% on prior year.

The Quarter: A Refund and a Ramp

The most conspicuous line item is the tariff refund. CFO Jennifer Walter was precise: “There is a $30 million benefit included in operating profit for the tariff refund this quarter. That represents 270 basis points of operating margin. And about $0.70 of earnings per share.” — Jennifer Walter, Chief Financial Officer · 2026-07-31 On an adjusted basis that's roughly half the quarter's EPS growth from a single non-operational event — a reminder that the 'pure' underlying expansion was a more modest 80 bps when the prior-year product-line sale and this year's refund are stripped out. Still, the company raised its FY26 margin guide by 70 bps to 14.1% and EPS by $1.51 to $11.65, and the refund is a macro theme the whole market is trading — data-center cooling shows up across the global trajectory as well. The underlying business also improved, with every segment up high-single to high-teens in sales.

The Surprise Growth Engine: Cooling Pumps

The more structurally interesting story is industrial. Half of the segment's 18% sales growth came from one product: the RM44 in-rack cooling pump for AI data centers. CEO Pat Roche framed the ramp emphatically: “We have increased from around $25 million in fiscal 25 to close to $100 million in fiscal 26. That is a quadrupling of the throughput.” — Patrick J. Roche, Chief Executive Officer · 2026-07-31 This is not entirely new — the prior quarter already telegraphed the direction, with Roche noting “In 2025, it was about $25 million of sales. We expect that to double in 2026.” — Patrick Roche, Chief Executive Officer · 2026-01-30 But the pace has evidently beaten expectations, and the company has responded with three production lines — Murphy, North Carolina doubled, plus a new line in Bangalore — running about 1,300 pumps per week. The next-gen in-row product (OCP V3 standard, per Google's spec) is in qualification and expected in production in FY27. The customer base is still concentrated — predominantly one hyperscaler via two CDU makers — but Roche confirmed outreach is broadening: “Our outreach has already started on business development across multiple CDU manufacturers and hyperscalers.” — Patrick J. Roche, Chief Executive Officer · 2026-07-31 That's the classic path from one-customer single-point-of-failure to a diversified AI infrastructure supplier.

The Missile Supercycle (Still Banks on the Horizon)

Defense remains the largest strategic weight, and the demand signal there is unambiguous. The 7-year U.S. government agreements signed with primes like Lockheed — enabling PAC-3 rates to triple and THAAD to roughly quadruple — have not yet reached Moog's backlog, but the company is already planning capacity. Roche: “We expect the missile program to be around $275 million in fiscal 26. That is over 20% growth year over year. And that is not reflecting the significant step up that is coming through those 7-year agreements... As yet, the impact of those 7-year agreements has not yet flowed down to our backlog.” — Patrick J. Roche, Chief Executive Officer · 2026-07-31 The prior quarter echoed this expectation, with the same PAC-3-driven optimism — “we expect it to be more than a $0.25 billion business for us within that space in Defense group.” — Patrick Roche, Chief Executive Officer · 2026-01-30 The key nuance: Moog's capacity build-out is occurring on its own dime, enabled by the tariff refund windfall and strong cash generation. Cash flow conversion guidance was raised to ~70% (from 60% prior), helped by lower CapEx timing, and free cash flow in Q3 hit $133M, comfortably above adjusted net earnings.

Valuation and the Watch-List

The stock has responded — up 24.7% over the past 90 days and near its all-time high despite a 12.6% drawdown off the August peak. But the setup carries two flags. First, the tariff refund is a one-time benefit; management was clear it reverses out of margins next year. Second, the data-center cooling concentration — one hyperscaler, two CDUs — represents real customer risk even as the growth is exceptional. The valuation sits at a modest 0.2x trailing price-to-revenue and 2.0x price-to-operating income, but that reflects the lumpiness of defense program timing and the one-time earnings quality. If the missile orders eventually flow through and the cooling pump business broadens beyond its single anchor customer, Moog's multi-year trajectory looks more like a compounder than a cycle stock. The market's keyword ledger now reads hyperscaler alongside the defense staples — a fair summary of what changed this quarter.