Triton bought a Volkswagen industrial division for €750m. They IPO'd it. The stock rose 6x. Then they exited their retained stake near the peak. This is the anatomy of a top-decile PE outcome — and what happened next.
RENK Group AG manufactures propulsion systems, transmissions, gearboxes and slide bearings for military vehicles, naval vessels and industrial applications. In simpler terms: the component that makes an armoured vehicle move. When a Leopard 2 main battle tank changes gear, it uses a RENK HSWL 354/3 transmission. So does the K2 (Poland's tank). So do the Lynx IFV, the AJAX, and dozens of other NATO platforms.
This matters because it creates a structural switching cost that is genuinely extraordinary. To replace RENK's transmission on a platform already in procurement requires 3–5 years of government-supervised requalification, plus ministry of defence approval in each country. No NATO member changes its primary drive technology supplier mid-programme. Once RENK is qualified into a platform, it stays for the life of that platform — typically 20–30 years.
"RENK's products are qualified into the same armoured vehicle platforms that NATO governments are now ordering in the largest quantities since the Cold War. The demand cycle and the qualification lock-in arrived at exactly the same time."
| Segment | Revenue | Growth | Adj. EBIT | Margin | Products |
|---|---|---|---|---|---|
| VMS — Vehicle Mobility | €872.2m | +24.8% | €178.3m | 20.4% | Tracked/wheeled transmissions. Leopard 2, K2, AJAX, Lynx. 70+ armed forces. |
| M&I — Marine & Industry | €380.4m | +15.3% | €45.2m | 11.9% | Naval gear units (40+ navies). Industrial gearboxes for energy, hydrogen, steel. |
| SB — Slide Bearings | €127.9m | +2.5% | €22.9m | 17.9% | Global market leader. Electric motors, generators, marine. US tariff headwind in 2026. |
| Group Total | €1,366.2m | +19.8% | €230.4m | 16.9% | 4-year consecutive margin expansion. VMS is the crown jewel at 20.4%. |
Source: RENK FY2025 Annual Report. VMS represents 63.8% of revenue and 77.4% of fixed order backlog. Geography: Americas 21.9% | Asia-Pacific 29.1% | Germany/Europe ~49%.
Triton Partners — the Stockholm-based PE fund — bought RENK from Volkswagen in 2020 for approximately €750m. VW was rationalising its industrial portfolio; RENK was a non-core subsidiary with steady revenues but no particular narrative. What Triton saw, and what VW was selling at a discount, was a qualification-locked industrial asset that would become mission-critical as European rearmament accelerated.
At first glance, Triton left billions on the table — the stock went from their €15 IPO price to €90. But this framing is incomplete. Triton only sold 33% at the IPO. The remaining 67% was held and exited at ~€80 in August 2025. The true analysis separates the two tranches.
| Tranche | Shares | Exit Price | Proceeds | Peak Value | Timing Verdict |
|---|---|---|---|---|---|
| IPO (Feb 2024) | ~33m shares | €15.00 | ~€495m | ~€2,975m (at peak) | Early by ~18 months |
| Retained stake (Aug 2025) | ~67m shares | ~€80+ | ~€5,360m | ~€6,040m (at peak) | Near-optimal |
| Total | 100m shares | Blended ~€58 | ~€5,855m | ~€9,015m (at peak) | ~7.8× MOIC overall |
The "value left on table" (~€3.2bn vs peak) is theoretical — no fund exits 100m shares in a single day without crashing the price. Triton's execution was optimal for the scale and structure of their exit.
Triton timed the full exit correctly. The IPO tranche alone was early by 12–18 months, but the retained-stake exit at ~€80 captured the vast majority of the defence supercycle re-rating. The 7× MOIC at ~48% gross IRR places this firmly in the top 5% of European PE outcomes in the 2020–2025 vintage. The narrative of "Triton left it all on the table" misses that they only sold 33% at IPO and timed their full exit near the peak.
For most industrial companies, order backlog is a trailing indicator — a rough sense of demand. For RENK in May 2026, it is the primary investment thesis. A fixed order backlog of €2.58bn against guided FY2026 revenue of >€1.5bn means more than 90% of the next 12 months' revenue is already contracted, signed, and secured. This is essentially unmatched in European industrials.
| Year | Order Intake | Revenue | Fixed Backlog | Book-to-Bill | Backlog (months) |
|---|---|---|---|---|---|
| FY2023A | €1,276.5m | €925.5m | €1,780m | 1.38× ✓ | 23.1mo |
| FY2024A | €1,441.9m | €1,140.5m | €2,080m | 1.26× ✓ | 21.9mo |
| FY2025A | €1,571.2m | €1,366.2m | €2,260m | 1.15× ✓ | 19.9mo |
| Q1 2026 | €582.3m (qtr) | €283.6m (qtr) | €2,576m | 2.1× ✓✓ | >22mo est |
| FY2026E | >€1,500m avg | >€1,500m | ~€2,700m est | >1.0× | ~21mo est |
✓ = B2B >1.0× (backlog expanding). The backlog has grown every year. The critical risk shifts from demand to delivery: can RENK physically produce what it has promised?
The binding constraint is capacity, not demand. RENK's 2030 target of €2.8–3.2bn implies doubling production from today's €1.4bn. This requires significant capacity expansion in Augsburg, the newly opened India facility, and the Cincinnati Gearing acquisition. Q1 2026 showed the first signs of delivery pressure — M&I revenue deferred due to supplier shortages. Demand is not the question. Execution is.
At ~€44.50/share and ~27× EV/EBITDA (trailing), RENK has already corrected 51% from its October 2025 peak. The question is whether that correction represents a buying opportunity or fair value normalisation. Our DCF analysis produces a clean answer.
Revenue grows at 13% CAGR FY2025–FY2030. Margins expand to 22% as operational leverage kicks in. WACC 5.8% (lower risk premium). Terminal growth 3.0%.
Revenue grows at 6% CAGR. Margins stable at 19%. WACC 7.2% (higher geopolitical derating risk). Terminal growth 2.0%.
The current stock price of ~€44.50 is consistent with normalisation being fully priced. The supercycle scenario at €159/share is not in the price. RENK is not cheap — it is fairly valued under conservative assumptions with very significant upside if the NATO spending commitments materialise.
This is the second central question of the analysis. At ~27× EV/EBITDA and ~€7.3bn EV, a conventional PE take-private of RENK is structurally impossible. Here is the arithmetic:
| Parameter | Current (~€44.50) | −30% (~€31) | −50% (~€22) |
|---|---|---|---|
| Enterprise Value | ~€7,300m | ~€5,110m | ~€4,045m |
| Entry EV/EBITDA | ~27× | ~19× | ~15× |
| Max Debt (4.0× EBITDA) | ~€1,080m | ~€1,080m | ~€1,080m |
| Required Equity | ~€6,220m (85%) | ~€4,030m (79%) | ~€2,965m (73%) |
| 5yr IRR (exit 22× EBITDA) | ~8–10% | ~14–16% | ~20–22% |
| PE Viable? (need >20% IRR) | NO | NO — borderline | BARELY |
Max debt based on 4.0× adj.EBITDA — typical ceiling for defence companies with government contracts. IRR assumes 12% EBITDA growth and 22× exit multiple. No PE fund crosses a 20% hurdle at 85% equity contribution.
The re-privatisation window closed permanently when RENK joined the MDAX. The Triton opportunity — a 2020 carve-out from Volkswagen at 8–9× EV/EBITDA before the supercycle — does not recur. RENK is now a public markets story, and specifically an equity long thesis for investors who believe European rearmament is structural.
RENK must double production in 5 years to hit 2030 targets. Q1 2026 already shows M&I revenue deferred due to supplier shortages. Germany faces engineering talent shortages of ~250,000 over 5 years. Demand is not the question — execution is. If RENK cannot scale, it leaves backlog-backed revenue unrealised.
FCF declined from €87.4m (FY2024) to €66.9m (FY2025) despite adj. EBIT growing from €189m to €230m. Working capital build absorbs cash as RENK stocks up for the backlog. At target revenue €2.8bn, NWC at 25% = €700m tied up in working capital. FCF conversion is a structural constraint.
Susanne Wiegand — the architect of the IPO and RENK's transformation — departed February 2025. Dr. Sagel takes over at peak delivery obligation. Early signals positive (FY2025 guidance met; FY2026 confirmed). Watch H1 2026 results (August 2026) for first real operational test.
Q1 2026 SB adj. EBIT margin fell 400bps from US tariff impacts. SB is 9% of revenue. Americas at 21.9% of group revenue includes both military (protected) and industrial (exposed). Ongoing tariff escalation could further compress SB margins in H2 2026.
Fixed backlog €2.58bn vs guided revenue >€1.5bn. 22+ months of revenue visibility. The risk is not demand — it is delivery. B2B 2.1× in Q1 2026 means the backlog is still growing faster than it is being consumed.
RENK transmissions require government-supervised requalification to replace on any platform. 70+ armed forces. 40+ naval forces. Once qualified, RENK stays for the life of the platform — typically 20–30 years. This is the foundational investment quality signal.
Adj. EBIT margin: FY2022 ~16.0% → FY2025 16.9%. VMS at 20.4%. Operational leverage from volume growth is real. Guidance implies further expansion as revenue scales toward €1.5bn+. Aftermarket growth adds high-margin recurring revenue independent of new procurement.
Triton sold 33% at the IPO at €15 and retained 67%. The "early exit" narrative misses that they held the majority and exited near the peak at €80+. Staging through a public listing allows PE sponsors to manage liquidity risk and capture price appreciation post-listing. The 7× MOIC reflects the full staged position, not the IPO tranche alone.
A 3–5 year government requalification requirement to switch suppliers is not a customer preference — it is a structural barrier enforced by defence procurement law. RENK's moat is not brand, not price, and not product quality alone. It is the accumulated regulatory and programmatic complexity of being embedded in active weapons platforms. This is functionally irreplaceable within a normal investment horizon.
At 2.1× book-to-bill and >90% of FY2026 revenue already secured, RENK has zero revenue risk for the next 18 months. The analysis that focuses on trailing revenue or EBITDA margins misses the point. For a defence company in a procurement supercycle, fixed backlog coverage is the forward-looking indicator that matters. Revenue will follow — the question is only whether production can deliver it.
The Triton opportunity required a VW carve-out at 8–9× EV/EBITDA in 2020, before the supercycle. That window closed when RENK joined the MDAX. The precise calculation: 4.0× EBITDA leverage supports only ~€1.1bn of debt against a €7.3bn EV, requiring ~85% equity contribution and generating ~8–10% IRR — well below any PE hurdle rate. This is now a public equity story.
At ~€44.50, the normalisation scenario (6% revenue CAGR, stable 19% margins) is fully priced. The supercycle scenario (13% CAGR, margins to 22%) implies €159/share — 258% upside. The gap is not a valuation error; it is a genuine uncertainty about whether NATO's 5% GDP commitment translates into contracted procurement at RENK's scale. That is a geopolitical judgement call, not a financial modelling question.
The complete investment memo and financial model — 11 Excel sheets (Triton Exit Analysis, DCF dual-scenario, Order Backlog, Re-Privatisation LBO, Geopolitical Risk, DD Flags, and more), 204 live formulas, zero errors.
All data from public filings as of May 2026. Triton returns estimated — flagged in model. Not investment advice.