RENK Group H1 2026: The Best Defense Business You're Not Being Paid to Own

Do you know what scares me more than the risks of owning defense stocks at record multiples? Not owning enough real-economy companies with genuine pricing power. I'm going to be blunt about RENK Group AG here. This is one of the highest-quality mission-critical businesses I've seen outside the American defense complex. The question isn't whether RENK deserves a place in your portfolio. The question is whether you're being compensated enough for the risk of owning it at today's valuation.

RENK presented its first-half 2026 results on August 6th, and the numbers are what they always are when you own a company that sits alone at the top of its lane. Revenue came in at €637 million, up 2.7% year-over-year. Adjusted EBIT — earnings before interest and taxes, normalized for non-recurring items — grew to €98.2 million, up 10.1%, pushing the margin to 15.4%, a full 100 basis points higher than a year ago. Free cash flow reached €41 million, beating consensus estimates by 19% and nearly quadrupling the prior-year H1 figure of €11.5 million.

Revenue growth looks modest. But that's a delivery timing issue, not a demand issue. More than 90% of RENK's planned 2026 revenue is already locked in through fixed order backlog. The company is executing deliveries according to customer schedule, and the year is expected to be back-end loaded. What's not modest is order intake: €1.2 billion in the first half, up 29.7% year-over-year. Q2 alone brought in €613 million, a record single quarter and a 64.5% jump from Q2 of last year. The book-to-bill ratio — orders received versus revenue booked — sits at 1.9x. The order backlog is €7.4 billion, an all-time high and 5.3 times trailing revenue.

That is where the opportunity started and where it still lives. But the market has not been sitting still.

What You're Actually Buying

RENK doesn't make consumer durables or discretionary technology. It makes propulsion and drivetrain systems for military vehicles, naval vessels, and select industrial applications. The company is a sole-source supplier for Leopard 2 main battle tank transmissions — that's a moat you can't replicate. It just produced its 4,000th Leopard 2 transmission and is planning to triple land transmission capacity by 2030.

In the Vehicle Mobility Solutions segment, which drives the business, order intake jumped 42.6% to €970 million. Revenue grew 7.6% to €419 million, with adjusted EBIT margins expanding to 19.2%, up 210 basis points from the prior year. That margin expansion comes from higher factory utilization, a new modular assembly line in Augsburg, and a product mix that keeps shifting toward higher-margin defense programs.

The major contracts are structural, not cyclical. The Rheinmetall KF41 Lynx program extension alone carries €270 million in value plus €63 million in options. The U.S. Army THOR-IV follow-on program has up to $691 million in total value, with roughly €120 million recognized as order intake in Q2. Patria's TRACKX series, Leopard 2 variants, Boxer IFVs, the Austrian IFV program, and the Korean K2 tank program all feed the pipeline.

Here's what matters for the portfolio: defense now accounts for 75% of revenue, up from 74% last year, and the aftermarket business — recurring, hard-to-cannibalize service and parts revenue — holds stable at 37%. These are not growth-at-all-costs dynamics. These are programs that have already won the contract, locked in the pricing, and are now executing against a multi-decade demand curve.

The Margin Story Is the Hidden Driver

Everyone looks at order intake and backlog. The more interesting signal is what's happening to margins. Adjusted gross profit margin expanded to 28.9%, up from 27.6% in H1 2025. Adjusted EBIT margin widened by 100 basis points to 15.4%. Full-year adjusted EBIT guidance sits between €255 million and €285 million, and management said they're targeting the upper half of that range.

That margin expansion matters because it shows pricing power working alongside operational leverage. RENK can raise prices on these defense contracts without losing customers. The products are mission-critical. The barrier to entry is a century of engineering heritage, military certifications, and program lock-in. When inflation runs above traditional targets — and I believe it will, structurally, because deglobalization, energy transition costs, and fiscal dominance all pressure the old regime — companies with pricing power are the only ones that can grow dividends, reinvest, and compound without eating their own margins.

Slide Bearings, the company's most cyclical segment, tells a different story. Revenue fell 4.4%, margins compressed from 16.6% to 12.5%, and U.S. tariffs have become significantly more painful. Marine & Industry revenue declined 6.1% in H1, though Q2 showed sequential recovery with margin bouncing back to 11.9%. These are the segments that remind you defense is not the whole story, and that industrial cyclicality still exists within the group. But they're not the story you're buying anymore.

The Valuation Problem

And this is where the article becomes uncomfortable. RENK trades at a market cap of roughly €4.8 billion, with a forward P/E ratio around 27.7x and a price-to-sales multiple near 3.5x. That is not cheap for a mechanical engineering company, even a defense one.

I'm not arguing that RENK's business doesn't deserve a premium. I'm arguing that the premium has already been paid. The stock went public on the Frankfurt Stock Exchange in February 2024, joined the MDAX in March 2025, and has been the beneficiary of a perfect storm: NATO's commitment to raising defense spending toward 3.5% of GDP, Germany's €609 billion allocation for 2027–2030, and RENK's position as one of the few European publicly traded defense companies with this kind of backlog visibility and margin trajectory.

At 27.7x forward earnings, the market is pricing in sustained execution, continued margin expansion, successful integration of the David Brown Defence acquisition, and no meaningful stumble in the order pipeline through at least the next two years. That's a lot of perfect outcomes baked into the price.

The David Brown Defence Acquisition

RENK signed a binding agreement in July 2026 to acquire David Brown Defence from Stellex Capital Management. Financial terms weren't disclosed, but David Brown brings approximately £100 million in annual revenue, 530 employees, and a pipeline valued at over £700 million through 2030. The company specializes in naval power transmissions, including submarine propulsion systems — low-noise, low-vibration technology RENK hasn't offered before. It also gives RENK access to the Five Eyes intelligence alliance countries and locks in programs like the Global Combat Ship initiative, which could include up to 34 UK surface combatants.

This is the kind of M&A that makes sense. It's bolt-on, adjacent, and adds programs with 20-year-plus lifecycles. David Brown's land defense work on the Challenger 2 and Boxer programs also strengthens RENK's UK footprint. But the question for investors isn't whether the acquisition is strategic. It's whether the premium RENK pays — and the integration execution risk — gets reflected in this already-stretched valuation.

What Changes the Equation

Three things would make me more comfortable with a larger position. The first is a pullback. RENK's order backlog is five-plus years of revenue. The demand curve is secular. A temporary multiple compression — whether from a broader European market correction, a defense sector rotation, or short-term industrial weakness dragging down the MDAX — would give you a better entry into the same backlog. That's the equity yield curve approach: buy quality when cyclical or sentimentheadwinds inflate risk, then hold through the compounding.

The second is margin confirmation in H2. Management is targeting the upper half of that €255–285 million EBIT range. If H2 margins expand further, especially as the modular production line scales and defense product mix continues to improve, the earnings power grows faster than the current multiple implies.

The third is David Brown closing on schedule in Q4 2026. Successful integration would add a meaningful marine defense platform and give RENK a true global footprint across land, surface, and submarine propulsion.

The Risk That Matters

The real risk here isn't that RENK loses contracts or that defense spending slows. It's that you overpay for certainty. At 27.7x forward earnings, the stock is pricing in a very long, very smooth execution path. If margins plateau, if integration stumbles, or if the defense order pipeline shows any crack in H2 or 2027, the multiple compression could be significant. A company trading at 3.5x sales doesn't have much room for a disappointment gap.

I also want to flag something that doesn't show up on the earnings slide: net debt stands at €407 million, and the leverage ratio sits at 1.5x adjusted EBITDA. RENK refinanced in July 2026 to an unsecured framework, expecting to save roughly €7 million in annual interest expense. That's good operational housekeeping, but it doesn't change the fact that the balance sheet carries debt for a company that's paying acquisition premiums and funding capacity expansion. The leverage is manageable — 1.5x is well within investment-grade territory — but it's not invisible.

Where This Fits

This is not a stock I would treat as a yield shortcut or a short-term trade play. From an income and risk/reward point of view, RENK belongs in the income-growth sleeve of a portfolio that's positioning for a world where defense spending is structurally higher, inflation is less cooperative than the market wants, and real-economy companies with pricing power outperform expensive financial assets. But I would size the position based on valuation entry, not conviction alone.

The conviction is there. The backlog, the margins, the pricing power, the secular demand — this is exactly the kind of business I want to own. But conviction without valuation discipline is how good businesses become disappointing investments. The setup is strongest if you can get in at a multiple that leaves room for execution variance, not one that demands perfection.

The market has done its homework on RENK. The question for you is whether it's done enough of it to justify what you'd pay today.