Executive Summary
Accelleron is the world's dominant manufacturer and servicer of large turbochargers for marine engines, power generation, and rail -- a business with a razor-and-blade model where 75% of revenue comes from recurring aftermarket services. Spun off from ABB in October 2022, the company holds approximately 40-50% global market share with an installed base of 180,000+ turbochargers serviced through 100+ service centers worldwide. The business generates exceptional returns (ROE 51%, ROIC 28%, EBITA margin 25.6%) and converts nearly 100% of net income to free cash flow.
Investment Thesis in 3 Sentences: Accelleron is a hidden gem -- a wide-moat, high-return industrial compounder disguised as a boring turbocharger business. The 75% recurring service revenue with 5,000-7,000 operating-hour mandatory maintenance cycles creates visibility and resilience unmatched in industrial manufacturing. However, at 42x trailing P/E and CHF 74.75, the market has already discovered this quality, pricing in near-perfection with no margin of safety.
Verdict: WAIT -- Exceptional business at a premium price. Accumulate below CHF 50, Strong Buy below CHF 38.
Phase 0: Opportunity Identification (Klarman)
Why Does This Opportunity Exist?
It doesn't -- at least not today. Accelleron traded at CHF 14.20 at its all-time low in October 2022, just days after the ABB spin-off. That was the Klarman moment: forced selling from ABB shareholders who didn't want a turbocharger company, combined with spin-off complexity and zero analyst coverage. The stock has since appreciated 426% in 3.3 years.
The original opportunity was textbook:
- Forced selling: ABB shareholders received Accelleron shares and many sold immediately (wrong market cap, wrong index, wrong mandate)
- Complexity/stigma: Turbochargers seen as fossil fuel-adjacent, ESG-unfriendly (ABB itself cited sustainability misalignment as reason for spin-off)
- Institutional constraints: Too small at CHF 1.7B market cap for many funds; no analyst coverage initially
- Neglect: Boring industrial niche, no consumer brand recognition
Today at CHF 7.4B and 42x P/E, the stock is fully discovered. There is no clear mispricing reason. The current price reflects strong execution and market recognition of the business quality.
Phase 1: Risk Analysis (Inversion Thinking)
1. Decarbonization / Energy Transition Risk
The existential question: If shipping decarbonizes, do turbochargers become obsolete?
Assessment: LOW-to-MODERATE risk over 15+ years, potentially POSITIVE near-term.
- Turbochargers are fuel-agnostic. Accelleron's next-generation products handle methanol, ammonia, methane, and hydrogen. In 2024, nearly half of all new tonnage ordered was alternative-fuel capable -- all requiring turbochargers.
- The shipping fleet replacement cycle takes 25+ years. The existing 180,000 turbocharger installed base will need servicing regardless of new-build fuel type.
- Full battery-electric propulsion for large vessels (the only scenario that eliminates turbochargers) remains physically impractical for trans-oceanic shipping. Energy density of batteries vs. fuel is off by orders of magnitude.
- Intermediate fuels (LNG, methanol, ammonia) all use internal combustion engines requiring turbochargers.
Risk quantification: P(turbochargers obsolete in 15 years) < 5%. P(demand erosion >20%) = 10-15%.
2. Concentration / Customer Risk
- 50% of business tied to marine applications
- No single customer concentration disclosed, but large shipping companies (Maersk, MSC, CMA CGM) are likely significant
- Dual-fuel retrofit demand is actually increasing customer engagement
Risk quantification: Moderate. Marine is cyclical but the service component (75% of revenue) provides substantial counter-cyclical resilience.
3. Competitive Dynamics
Competitors: MAN Energy Solutions (Volkswagen subsidiary), Mitsubishi Heavy Industries, Napier (Wabtec), IHI Corporation.
- Market has been stable for decades with Accelleron as clear #1
- 15-year barrier to entry for building a profitable installed base
- Competitors would need to replicate 100+ global service centers and 100+ years of engineering know-how
- No credible new entrant threat identified
Risk quantification: LOW. Oligopoly structure is deeply entrenched.
4. Valuation Risk (PRIMARY RISK)
At 42x trailing P/E, 23x book value, and 7.6x EV/Sales:
- Any earnings miss or growth deceleration will be punished severely
- A re-rating from 42x P/E to 25x P/E (still premium) implies -40% downside
- The stock has appreciated 426% in 3.3 years -- mean reversion risk is real
Risk quantification: HIGH. This is the primary risk for new investors.
5. US Tariff Risk (NEW - 2025)
- 39% US tariff on Swiss goods effective August 2025
- Management lowered 2025 EBITA margin guidance by 100bp to 24-25%
- Plans to mitigate through pricing and value chain reconfiguration by 2026
- US is estimated at ~15-20% of revenue
Risk quantification: MODERATE near-term, likely manageable over 12-18 months.
6. Leverage Risk
- D/E ratio of 137% (net leverage 0.7x EBITDA)
- CHF 250M outstanding credit facility + CHF 180M bond (1.375% coupon)
- The high ROE (51%) is partly leverage-amplified
- Without leverage, ROE would be approximately 25-30% -- still excellent
Risk quantification: LOW. Leverage is modest relative to cash flow generation. Debt/EBITDA < 1x.
Inversion Section
How could this investment lose 50%+ permanently?
- Shipping industry undergoes rapid electrification, eliminating turbocharger demand (< 5% probability in 15 years)
- A catastrophic product defect causes fleet-wide reliability issues, destroying the service trust relationship (< 2% probability)
- Chinese competitors successfully replicate the service network at half the cost (< 10% probability in 10 years)
What would make me sell immediately (non-price triggers)?
- Service revenue declining below 65% of total (from 75%)
- Market share loss below 35% (from ~40-50%)
- Net leverage exceeding 2.5x EBITDA
- Dividend cut
3-Sentence Bear Case: Accelleron trades at 42x earnings for a business growing 7% organically -- a pricing multiple that demands perfection. The energy transition will eventually reduce demand for large combustion engines in shipping and power generation, and the installed base will peak and then shrink over a 20-30 year horizon. The ABB spin-off was a clever move to jettison a fossil fuel asset at peak multiples before the market realizes the terminal value problem.
Phase 2: Financial Analysis
Income Statement Summary (USD millions)
| Year | Revenue | Gross Margin | Op EBITA Margin | Net Margin | EPS (USD) |
|---|---|---|---|---|---|
| 2024 | 1,023 | 46.1% | 25.6% | 17.5% | 1.81 |
| 2023 | 915 | 42.2% | 24.4% | 12.0% | 1.08 |
| 2022 | 781 | 45.2% | 24.6% | 16.6% | 1.31 |
| 2021 | 756 | 45.0% | 24.6% | 20.2% | 1.54 |
Key observations:
- Revenue CAGR (2021-2024): 10.6%
- Organic growth 2024: 7.3% (total 11.8% including acquisitions)
- EBITA margins remarkably stable at 24-26% -- hallmark of pricing power
- 2023 net income depressed by USD 82M one-time standalone setup costs (ABB separation)
- 2024 net income bounce-back (+63%) reflects normalization, not a step-change
Balance Sheet Summary (USD millions)
| Year | Assets | Equity | Net Debt | D/E | Net Leverage |
|---|---|---|---|---|---|
| 2024 | 1,234 | 349 | 206 | 137% | 0.7x |
| 2023 | 1,100 | 300 | 244 | 140% | 1.0x |
| 2022 | 950 | 300 | 133 | 107% | 0.6x |
Key observations:
- Thin equity base (book value CHF 3.54/share) -- a function of the spin-off structure
- Goodwill ~USD 280M from acquisitions (OMC2, True North Marine, OMT)
- Net leverage declining from 1.0x to 0.7x despite M&A activity
- CHF 180M bond at 1.375% = excellent financing locked in
Cash Flow Summary (USD millions)
| Year | Operating CF | CapEx | FCF | FCF Conversion | Dividends |
|---|---|---|---|---|---|
| 2024 | 216 | 39 | 178 | 99.1% | 84 |
| 2023 | 145 | 36 | 109 | 99.2% | 72 |
| 2022 | 133 | 34 | 99 | 76.5% | 72 |
Key observations:
- Near-perfect FCF conversion (99%) -- minimal working capital absorption
- Low capital intensity (CapEx ~3.8% of revenue) -- service businesses don't need factories
- FCF growing at 34% CAGR (2022-2024)
- Dividend payout ratio ~47% of FCF -- sustainable with room for growth
H1 2025 Update (Most Recent)
| Metric | H1 2025 | H1 2024 | Change |
|---|---|---|---|
| Revenue | $608M | $505M | +20.3% |
| Op EBITA | $155M | $128M | +20.8% |
| EBITA Margin | 25.5% | 25.4% | +10bp |
| Net Income | $115M | $89M | +29.5% |
| FCF | $81M | $30M | +164% |
2025 full-year guidance (raised): 16-19% constant-currency revenue growth, 24-25% EBITA margin (lowered 100bp due to 39% US tariff).
Return Metrics
| Metric | 2024 | 2023 | 2022 |
|---|---|---|---|
| ROE | 51.4% | 35.4% | 42.9% |
| ROIC (est.) | 28% | 22% | 25% |
| ROE (5yr avg) | ~44% | -- | -- |
DuPont Decomposition (2024):
- Net Margin: 17.5%
- Asset Turnover: 0.83x
- Equity Multiplier: 3.54x
- ROE = 17.5% x 0.83 x 3.54 = 51.4%
The equity multiplier of 3.54x (reflecting the thin equity base from spin-off) amplifies an already-excellent operating business. Without leverage, on total assets, ROA = 14.5% -- still highly attractive.
Valuation
Current multiples:
- P/E (trailing): 42x
- P/E (forward 2025E): 36x
- P/B: 23x
- EV/EBITDA: 27x
- EV/Sales: 7.6x
- FCF Yield: 2.4%
Owner Earnings Calculation:
Owner Earnings = Net Income + D&A - Maintenance CapEx
= $179M + $36M - $20M (est. maintenance, ~50% of total capex)
= $195M USD
= ~CHF 175M
Per share: CHF 175M / 98.8M shares = CHF 1.77/share
Conservative Value (10x): CHF 17.70
Fair Value (15x): CHF 26.55
Premium Value (20x): CHF 35.40
At CHF 74.75, the market is pricing this at 42x owner earnings -- a premium justified only by exceptional growth and quality, but not by traditional value metrics.
Graham Number:
Graham Number = sqrt(22.5 x EPS x BVPS)
= sqrt(22.5 x 1.62 x 3.54) [EPS in CHF ~1.62, BVPS ~CHF 3.54]
= sqrt(129.1)
= CHF 11.36
Current price is 6.6x the Graham Number. This is emphatically not a Graham-style bargain.
DCF Valuation (Conservative):
Assumptions:
- FCF Year 1: CHF 175M (USD 195M converted)
- Growth Years 1-5: 10% (organic + bolt-on M&A)
- Growth Years 6-10: 6%
- Terminal Growth: 2.5%
- Discount Rate: 9% (reflecting Swiss quality premium)
Year 1-5 FCF: 193, 212, 233, 256, 282
Year 6-10 FCF: 299, 317, 336, 356, 377
Terminal Value: 377 x 1.025 / (0.09 - 0.025) = 5,948
PV of FCF: 1,544
PV of Terminal: 2,738
Enterprise Value: 4,282
Less Net Debt: -206
Equity Value: 4,076M
Per Share: CHF 41.26
Fair Value (DCF): ~CHF 41
DCF Optimistic (higher growth):
Growth Years 1-5: 14% (management guidance level)
Growth Years 6-10: 8%
Terminal Growth: 3%
Discount Rate: 8.5%
Per Share: ~CHF 58
Private Market Value: Comparable transactions in high-quality industrial aftermarket businesses trade at 15-20x EBITDA.
- At 18x EBITDA: $274M x 18 = $4.9B = ~CHF 50/share
- At 22x EBITDA: $274M x 22 = $6.0B = ~CHF 61/share
Margin of Safety Calculation
| Valuation Method | Value/Share (CHF) | Current Price | Margin of Safety |
|---|---|---|---|
| Graham Number | 11.36 | 74.75 | -558% (overvalued) |
| Owner Earnings (15x) | 26.55 | 74.75 | -182% (overvalued) |
| DCF (Conservative) | 41.26 | 74.75 | -81% (overvalued) |
| DCF (Optimistic) | 58.00 | 74.75 | -29% (overvalued) |
| Private Market (18x EBITDA) | 50.00 | 74.75 | -50% (overvalued) |
Weighted Intrinsic Value Estimate: CHF 48-55 per share
At CHF 74.75, there is NO margin of safety. The stock trades 36-56% above estimated intrinsic value on conservative-to-moderate assumptions.
Phase 3: Moat Analysis
Moat Rating: WIDE -- Durable 15+ Years
Moat Source 1: Installed Base + Razor-and-Blade Model (PRIMARY)
- 180,000+ turbochargers in the global installed base
- 75% of revenue from recurring aftermarket services
- Maintenance required every 5,000-7,000 operating hours (non-optional -- skipping maintenance risks catastrophic engine failure)
- Service contracts last 25+ years per turbocharger
- Approximately 10,000 new turbochargers added to the installed base annually
- Revenue visibility from existing base extends decades into the future
This is a textbook razor-and-blade model. The initial turbocharger sale is the razor (lower margin), and the decades of mandatory maintenance are the blades (higher margin, recurring). The installed base compounds -- every new unit sold today generates service revenue for the next 25+ years.
Moat Source 2: Service Network Scale (100+ centers globally)
- No competitor has a service network even close to Accelleron's 100+ centers
- Ship operators need service wherever their vessels dock -- a global network is essential
- Building a comparable network would take 15+ years and hundreds of millions in investment
- The network creates a self-reinforcing loop: more service centers -> more convenient for operators -> more market share -> more justification for more centers
Moat Source 3: Switching Costs
- Turbocharger specifications are engine-specific. Switching to a competitor's turbocharger often requires engine modifications.
- Operators' engineering teams are trained on Accelleron products and diagnostics software.
- Safety certification and marine classification society approvals create regulatory switching costs.
- A turbocharger failure at sea can cost $100K+ per day in downtime -- the risk of switching to an unproven alternative is unacceptable.
Moat Source 4: 100+ Years of Engineering Know-How
- Accelleron (formerly ABB Turbocharging) has been in the turbocharger business for over a century
- This accumulated IP, testing data, and field experience cannot be replicated
- R&D investment of ~$57M/year (2023) maintains technological leadership
Moat Durability Assessment
| Threat | Severity (1-5) | Timeline | Company Mitigation |
|---|---|---|---|
| Energy transition (electrification) | 2 | 20+ years | Fuel-agnostic designs, dual-fuel retrofits |
| Chinese competitors | 3 | 10-15 years | Service network depth, certification barriers |
| New technology (e.g., fuel cells) | 2 | 15+ years | Active R&D in alternative propulsion solutions |
| Customer consolidation (bargaining power) | 2 | 5-10 years | Essential nature of service, no viable alternative |
| Regulatory change | 1 | N/A | Actually benefits from emissions regulation (more complex = more tech needed) |
Will this moat be wider or narrower in 10 years? WIDER. The installed base continues to compound, and the shift to dual-fuel/alternative-fuel engines increases complexity (favoring the technology leader). Each new unit sold today locks in 25+ years of service revenue.
Phase 4: Management & Incentive Analysis
CEO: Daniel Bischofberger
- Appointed Division President of Accelleron March 2022 (before spin-off)
- Prior: Member of Sulzer's Executive Committee, Division President for Rotating Equipment Services (~6 years)
- Before that: 14+ years at ABB in managerial roles
- Total 2024 compensation: CHF 1,869,484 (base CHF 600K, bonus CHF 508K, LTI CHF 465K)
- Shares held (2024): 12,243 shares (~CHF 914K at current price)
Assessment: Compensation is reasonable for a CHF 7B market cap Swiss company. The significant long-term incentive component (25% of total) is positive. Insider ownership is modest in absolute terms but the CEO has been with the business since before spin-off, demonstrating commitment.
Capital Allocation Track Record
| Use of FCF | 2024 | Assessment |
|---|---|---|
| Dividends | CHF 1.25/share (+47%) | Aggressive growth, 47% of FCF |
| M&A | $56M (OMC2 + True North Marine) | Bolt-on, complementary |
| Debt Service | Net leverage reduced 0.7x | Prudent |
| Organic CapEx | $39M (3.8% of revenue) | Maintenance + modest growth |
Dividend per share trajectory: CHF 0.73 (2022) -> CHF 0.85 (2023) -> CHF 1.25 (2024) = 71% growth in 2 years. Management is clearly targeting a premium dividend growth story to attract quality investors. The 2025E dividend of ~CHF 1.73 based on consensus implies continued strong growth.
Phase 5: Catalyst Analysis
| Catalyst | Timeline | Probability | Impact |
|---|---|---|---|
| H1 2025 earnings beat (achieved) | Aug 2025 | 100% (done) | +15% (realized) |
| US tariff mitigation / pricing power demonstration | H1 2026 | 70% | +5-10% |
| Margin expansion to 26-27% | 2026-2027 | 60% | +10-15% |
| Emergency power demand (data centers, grid instability) | Ongoing | 80% | +5% annually |
| Dual-fuel retrofit cycle acceleration | 2025-2030 | 65% | +10-15% over time |
Negative Catalysts:
- US tariff escalation beyond 39%
- Global shipping recession
- Growth deceleration below 5% organic
- P/E compression as market re-rates "industrial" stocks
Phase 6: Decision Synthesis
Megatrend Resilience
| Megatrend | Score | Notes |
|---|---|---|
| China Tech Superiority | +1 | China is a customer (ships use turbochargers), not a direct competitor yet |
| Europe Degrowth | 0 | HQ in Switzerland, global revenue, modest European exposure |
| American Protectionism | -1 | 39% Swiss tariff is real and hurting margins |
| AI/Automation | +1 | AI-enhanced diagnostics, predictive maintenance = moat strengthener |
| Demographics/Aging | 0 | Not directly relevant |
| Fiscal Crisis | +1 | Essential infrastructure, pricing power, moderate leverage |
| Energy Transition | +1 | Fuel-agnostic, dual-fuel retrofit demand is a tailwind |
| Total | +3 | T2 Resilient |
Expected Return Scenarios
| Scenario | Probability | 3-Year Return | Weighted |
|---|---|---|---|
| Bull (P/E stays 40x, 15% EPS growth) | 20% | +55% | +11% |
| Base (P/E compresses to 30x, 12% EPS growth) | 40% | -5% | -2% |
| Bear (P/E compresses to 20x, 8% EPS growth) | 30% | -40% | -12% |
| Disaster (earnings decline, P/E 15x) | 10% | -60% | -6% |
| Expected 3-Year Return | 100% | -9% |
The expected return from current prices is negative on a probability-weighted basis, driven by the high starting valuation and likely P/E compression.
Entry Prices
Intrinsic Value Estimate: CHF 50 (conservative DCF/private market blend)
Strong Buy: CHF 35 (30% MOS, ~19x earnings)
Accumulate: CHF 40 (20% MOS, ~22x earnings)
Fair Value: CHF 50 (DCF/private market)
Hold Zone: CHF 50-75
Take Profits: CHF 75+ (current level, 50%+ above IV)
Sell Triggers (If Owned)
- Thesis Break: Service revenue falls below 65% of total
- Moat Erosion: Market share drops below 35%
- Management Failure: Acquisitions destroying value (ROIC < WACC on M&A)
- Valuation: Already above take-profit level at CHF 74.75
Investment Recommendation
+-------------------------------------------------------------+
| INVESTMENT RECOMMENDATION |
+-------------------------------------------------------------+
| Company: Accelleron Industries AG Ticker: ACLN.SW |
| Current Price: CHF 74.75 Date: Feb 21, 2026 |
+-------------------------------------------------------------+
| VALUATION SUMMARY |
| Graham Number: CHF 11.36 -558% (overvalued) |
| DCF (Conservative): CHF 41 -81% (overvalued) |
| DCF (Optimistic): CHF 58 -29% (overvalued) |
| Private Market (18x): CHF 50 -50% (overvalued) |
| Owner Earnings (15x): CHF 26.55 -182% (overvalued) |
| |
| INTRINSIC VALUE ESTIMATE: CHF 48-55 |
| MARGIN OF SAFETY: NEGATIVE (-36% to -56%) |
+-------------------------------------------------------------+
| RECOMMENDATION: [X] WAIT |
+-------------------------------------------------------------+
| STRONG BUY PRICE: CHF 35 (30% below IV) |
| ACCUMULATE PRICE: CHF 40 (20% below IV) |
| FAIR VALUE: CHF 50 |
| CURRENT GAP TO ACCUMULATE: -87% (need CHF 40 vs CHF 74.75) |
+-------------------------------------------------------------+
| POSITION SIZE: 0% (wait for entry) |
| CATALYST: Tariff mitigation, margin expansion, dual-fuel cycle |
| PRIMARY RISK: Extreme valuation (42x P/E) |
| SELL TRIGGER: Service revenue < 65%, market share < 35% |
+-------------------------------------------------------------+
Quality Grade: A -- Exceptional business with wide moat, high returns, recurring revenue, and pricing power. One of the best industrial businesses globally.
Final Assessment: Accelleron is a phenomenal business that would be a portfolio cornerstone at the right price. At CHF 74.75 (42x P/E), the market is pricing in perfection. The stock needs to decline approximately 47% to reach an Accumulate level. This is realistic only in the event of a broad market correction, a tariff escalation, or a shipping industry cyclical downturn. Add to the watchlist and wait patiently.
Sources
Primary Documents
| Document | Source | Key Data |
|---|---|---|
| Annual Report 2024 | accelleron.com | Revenue, EBITA, segments, dividends |
| Annual Report 2023 | accelleron.com | Prior year comparisons |
| Annual Report 2022 | accelleron.com | First year as standalone |
| H1 2025 Report | accelleron.com | Latest trading update |
| FY24 Press Release | finanzwire.com | Detailed financial summary |
| H1 2025 Press Release | finanzwire.com | Revenue guidance raise |
Web Sources
| Source | URL | Data |
|---|---|---|
| Accelleron IR | https://accelleron.com/investors/financial-reports | All annual reports |
| MarketScreener | marketscreener.com | Historical financials, consensus estimates |
| CompaniesMarketCap | companiesmarketcap.com | Revenue history, earnings |
| Arvy.ch | arvy.ch/accelleron-abbs-crown-jewel/ | Competitive analysis |
| Investegate | investegate.co.uk | FY2023 results detail |
| SIX Exchange | six-group.com | IPO data, listing price |