Raspberry Pi Holdings plc

Overview

Deep value / contrarian analysis of Raspberry Pi Holdings plc (LON:RPI) after a 46% drawdown from its 52-week high of 1,082p to 585p despite record H1 FY2026 results. The report uses Keith Gill's framework: identify narrative extreme, balance-sheet survival, short squeeze/positioning, and catalysts.

The Bear Case

Wall Street and cautious retail now argue the H1 beat was a one-off memory-inventory windfall that is disappearing. Low-cost DRAM bought in FY2025 is depleted, so H2 unit economics must moderate; management has explicitly guided to moderation. Berenberg initiated at Hold (670p) citing DRAM costs now 7-8x historical and possibly ~15% gross margin in FY2026, down from 24.1%. Gross margin already fell to 23% in H1 despite gross profit jumping. Free cash flow is negative because inventory rose $117m to $262.7m, payables surged to $163m, and the company drew down its RCF, with $40-50m net debt expected. Valuation is not cheap: forward P/E ~40x, trailing ~45x, P/B ~5.5x. Semiconductor revenue is only ~1% of sales, so the silicon dream is still unproven. Insiders sold near the June highs; the Raspberry Pi Foundation reduced its stake from ~47% to ~41%. The stock is below 50-day and 200-day averages. Bears say AI/OpenClaw retail enthusiasm created an unsustainable hype move from 253.8p to 1,082p, and the stock is now stuck with a hangover.

The Bull Case

The market is obsessing over a temporary margin normalization while ignoring accelerating demand and a structural moat. H1 FY2026 revenue rose 90% to $256.9m, adjusted EBITDA doubled to $40.3m, and unit shipments grew 17% to 4.2m. Customer order backlog doubled to 2.6m units. Direct OEM shipments rose 26%; Compute Module sales rose 57%; accessory gross profit rose 90%. Industrial/embedded is ~75% of end demand, and demand has held through price increases. Management expects H2 volumes higher than H1 and full-year EBITDA ahead of consensus. Raspberry Pi diversified memory suppliers from 2 to 7, secured enough DRAM for FY2026 and into Q1 FY2027, and is expanding Sony production toward 1m boards/month. The memory crisis is a competitive advantage: smaller competitors cannot get allocation, causing a flight to quality. Edge AI is a real optionality: AI HAT+ 2, generative AI migration to edge, smart home, aerospace/defense, and RP2350 record August sales. The balance sheet is survivable with $140m committed facility, $276.7m equity, and going-concern stress test requiring a 65% unit decline to breach covenants. CEO Eben Upton bought 5,000 shares at 539.5p on 26 Oct 2026. Peel Hunt's target is 1,085p, roughly 85% above the current 585p. The pullback from 1,082p to 585p may already price in the known margin headwind.

Fundamental Deep Dive

Sentiment & Technical Setup

Catalyst Analysis

Near-term catalysts: H2 FY2026 trading update or preliminary results showing higher H2 unit volumes and full-year EBITDA above consensus; successful conversion of the 2.6m unit backlog; new capacity from Sony reaching 1m boards/month in Q4; continued memory supplier diversification and potential DRAM price stabilization. Medium-term: new product launches (Pico 2 variants, Raspberry Pi 6 path, next-gen silicon), defense/aerospace contracts, Tier 1/Tier 2 semiconductor design wins, and Raspberry Pi Connect recurring revenue. A squeeze could occur if short interest built during the decline and any positive catalyst forces covering. Insider buying by the CEO late October is a small but important signal.

Key Risks

Conclusion

Raspberry Pi has been repriced from 1,082p to 585p on a narrative that H1 FY2026 was the peak and that memory margin compression will break the story. The margin concern is legitimate but is now widely known, guided by management, and likely priced into the 46% drawdown. The market appears to be missing the demand side: record backlog, accelerating direct OEM adoption, edge AI, defense, and a supply-chain moat that is driving share gains. The balance sheet can survive the working-capital strain, and CEO buying provides an insider signal near the lows. This is not a classic cigar-butt deep value; it is a quality growth platform trading at a sentiment discount. Patience is required because H2 could print lower profit per board, but if volumes convert and EBITDA exceeds consensus, the current price under the 200-day average offers an attractive asymmetric entry. A break of the 253.8p 52-week low or hard evidence of demand destruction would invalidate the thesis.

Overview

A Warren Buffett-style analysis of Raspberry Pi Holdings plc (LSE: RPI) as of 29 October 2026, focusing on business understandability, economic moat, management quality, financial strength, intrinsic value versus the current market price of 585 GBp, and long-term fundamentals. The analysis uses the H1 2026 interim results, trading updates, analyst commentary, and available market data to assess whether this is a quality franchise available at an attractive price.

Business Understanding

Raspberry Pi designs and sells low-cost, high-performance single-board computers, compute modules, microcontrollers, accessories, and related software. Revenue is generated from product sales, component sales, royalties, and increasingly direct OEM relationships. The core idea is simple: provide affordable, reliable compute to enthusiasts, educators, industrial customers, and embedded OEMs. The business is understandable within a general technology and industrial circle of competence, but hardware competition, component cycles, and the growing semiconductor segment add complexity. It is not a simple, predictable franchise in the same way as a consumer staple or software platform, but the model is coherent and the company has over 77 million cumulative units sold.

Economic Moat Analysis

Raspberry Pi has a real but not dominant moat. Strengths include a powerful brand and ecosystem in low-cost computing, a large community of developers and educators, design-in switching costs for OEM customers using Raspberry Pi Compute Modules, long product support cycles, and full-stack engineering including proprietary silicon such as the RP1, RP2040, and RP2350. The 2026 memory shortage demonstrated a supply-chain and cost-availability advantage over smaller competitors, as Raspberry Pi secured DRAM supply and maintained production while others struggled. However, the moat is narrower than software franchises: gross margin is only about 23%, component revenue carries low margins, and there is persistent risk from lower-cost competitors and customers building in-house alternatives. The brand and ecosystem are durable advantages, but the economic moat is best described as moderate or narrow-to-medium rather than wide.

Management Quality

Founder Eben Upton remains CEO and the company retains an engineering-led culture with 56% of employees in engineering roles. Recent insider purchases, including Upton buying 5,000 shares at 5.395 GBP on 26 October 2026, are a positive signal. Arm and the Raspberry Pi Foundation remain significant supportive shareholders. Management is growth-focused and reinvests in inventory, R&D, capacity, and OEM relationships rather than paying dividends. However, there are mixed signals: insider sales near the June 2026 share-price peak, a reduction in the Foundation's stake from about 47% to 41%, CFO transition, and high share-based compensation. Overall, management appears capable, aligned, and long-term oriented, but the ownership and incentive picture is not as clean as the ideal Buffett-style capital allocator.

Financial Strength

H1 2026 results were strong on the surface: revenue rose 90% to 256.9 million USD, adjusted EBITDA rose 108% to 40.3 million USD, and profit before tax rose 216% to 19.6 million USD. However, statutory net margin was only about 6.7%, gross margin declined from 25% to 23%, and return on equity is modest: annualized statutory H1 profit of 17.1 million USD against equity of 276.7 million USD implies roughly 12%, while adjusted figures may be in the high teens. Free cash flow is negative because inventory rose 117 million USD to 262.7 million USD. Net cash was 18.4 million USD at 30 June 2026, but the company moved to net debt after period end and expects net debt around 40-50 million USD by year-end. The balance sheet remains manageable with a 140 million USD revolving credit facility, but this is not a high-return, cash-generative fortress yet.

Intrinsic Value Assessment

The company is growing quickly and has genuine optionality in industrial computing, edge AI, microcontrollers, and aerospace and defence. But much of the H1 2026 profitability was boosted by low-cost memory inventory purchased in 2025; management expects unit economics to moderate as those benefits roll off. Normalizing earnings through the memory cycle, owner earnings after maintenance capital expenditure and normalized taxes are likely materially below the reported adjusted EBITDA. At 585 GBp, the market capitalization is roughly 1.13 billion GBP. The shares trade around 40-45x trailing/forward earnings and over 20x expected full-year adjusted EBITDA. A conservative 20-25x multiple on normalized owner earnings suggests fair value may be roughly 450-550 GBp per share, meaning the current price offers little to no margin of safety. The price is not extreme, but it is not a bargain.

Key Risks

Investment Details

Overview

This is a Joel Greenblatt-style Magic Formula review of Raspberry Pi Holdings plc (LSE:RPI). The Magic Formula ranks stocks on two simple factors: cheapness (EBIT/Enterprise Value) and quality (EBIT/Invested Capital). The aim is to buy above-average businesses only when they trade at below-average prices, then hold patiently for a year or more. This report applies that framework using the H1 2026 interim results, the 2025 audited financials, and current market data as of late October 2026.

Business Quality Assessment

Raspberry Pi is a very good business. It has a powerful brand, a dominant ecosystem, deep OEM relationships, engineering-led culture, and a sticky industrial/embedded customer base. Unit economics are strong: gross profit per SBC/compute module rose 53% to $12.20 in H1 2026, and accessories added $1.90 per board, comfortably above the company's $1 target. The business is asset-light in normal conditions, but it currently carries large strategic DRAM inventory. On a normalized basis, return on capital is attractive. Using reported H1 2026 balance-sheet figures, invested capital is approximately $276m. Statutory TTM EBIT of $39.8m gives a modest ROC of about 14-16%; adjusted EBIT of roughly $58m gives a healthier 20-24% ROC. The reported figures are depressed by the temporary inventory build. Historically and on a through-cycle basis, Raspberry Pi appears capable of earning high-teens to low-20s returns on capital. The competitive moat is real: switching costs, long support commitments, regulatory/compliance benefits, supply-chain reliability, and a low-cost UK manufacturing base all support above-average profitability. However, this is not a capital-light, high-margin software business; hardware, inventory cycles, and memory input costs create volatility.

Valuation Analysis

The stock is not cheap on a Magic Formula basis. Using the current market cap of approximately £1.13bn and an estimated USD conversion around $1.5bn, enterprise value is roughly $1.51bn after deducting $28.4m cash and adding $10.0m drawn borrowings at 30 June 2026. TTM statutory EBIT is about $39.8m, giving an earnings yield of only 2.6%. Even adjusting for share-based payments, TTM adjusted EBIT of about $57.9m gives an adjusted EBIT/EV yield of only 3.8%. This is far below the levels Greenblatt typically looks for. A Magic Formula investor wants an earnings yield well above risk-free bond yields; here the earnings yield is likely below or near UK gilt yields. The trailing P/E of about 45x and forward P/E of about 40x confirm that the market is paying a growth price. There is no margin of safety on current earnings power unless one assumes very substantial future growth.

Magic Formula Ranking

Normalized Earnings Analysis

Current earnings are not fully representative. H1 2026 benefited materially from lower-cost DRAM inventory acquired during 2025 and then consumed while memory prices were high. Management and the CFO indicated this one-off benefit to EBITDA was approximately $10-15m in the half. That benefit is now largely depleted. Additionally, reported earnings include large non-cash share-based payment charges: $15.4m in H1 2026 versus $5.2m in H1 2025. On an adjusted basis, TTM EBIT is about $57.9m, but normalized EBIT after removing the one-off inventory gain is probably closer to $43-48m. That would imply a normalized EBIT/EV yield of only around 2.8-3.2%. Sustainable owner earnings are positive and growing, but the current valuation still prices in years of strong growth. A conservative Magic Formula normalization would not justify the current price.

Why The Market Is Wrong

The market is not obviously wrong about the business, but it may be wrong about the growth narrative. Bulls argue that Raspberry Pi is a rare UK-listed technology platform with genuine edge-AI, semiconductor, defence, and smart-home opportunities. If edge AI adoption accelerates and DRAM prices normalize after 2028, earnings could grow substantially, working capital could release cash, and today's price may later look reasonable. However, from a Magic Formula perspective, that is a speculative growth argument, not a value argument. The contrarian case is not that the business is bad or that the market misunderstands it; the contrarian case is that the market has already priced in a great deal of future success. Greenblatt would probably say: 'Good company, wrong price.'

Key Risks

Conclusion

Raspberry Pi passes the quality test of the Magic Formula: it is a good business with real competitive advantages and above-average returns on capital. It fails the cheapness test: EBIT/EV of roughly 2.6-3.8% is far too low for a Greenblatt-style purchase. The stock trades at a large premium to current earnings, relying on sustained high growth in edge AI, semiconductors, and defence. A Magic Formula investor would likely avoid this stock until either the price falls significantly or normalized earnings grow enough to make the earnings yield competitive with safer alternatives. Therefore, HOLD is the appropriate rating: not a short sale, not a formula buy.

Overview

This report applies William J. O'Neil's CAN SLIM methodology to Raspberry Pi Holdings plc (LSE: RPI) using the 24 September 2026 H1 FY2026 interim results, subsequent trading updates, and market data as of 29 October 2026.

Financial and Business Overview

Raspberry Pi delivered record H1 FY2026 results: revenue rose 90% to $256.9m, gross profit rose 79% to $59.4m, adjusted EBITDA rose 108% to $40.3m, and basic EPS rose 217% to 8.84 cents. Unit shipments increased 17% to 4.2m, direct OEM shipment growth was 26%, and the order backlog doubled to 2.6m units. Gross margin declined to 23% from 25% due to the pass-through of higher memory costs. The business is transitioning from hobbyist/education roots to industrial/embedded and OEM markets, with edge AI, smart home, defence, and semiconductors increasingly important. However, management expects unit economics to moderate in H2 FY2026 as low-cost DRAM inventory is consumed. Net cash fell to $18.4m from $34.3m, and working capital is absorbing cash due to strategic memory inventory purchases.

Market Position & Competitive Advantages

Raspberry Pi has a powerful ecosystem, brand, and engineering moat: over 77m units sold, long product life cycles, proprietary silicon, and UK-based manufacturing that helps with tariff positioning. Its ability to source memory through seven suppliers versus two a year ago has become a competitive advantage during severe DRAM shortages. Direct OEM relationships, the AI HAT+ 2 edge-AI product, and exposure to aerospace/defence and smart home markets are genuine growth catalysts. However, risks include a large customer concentration, significant memory-cost cyclicality, insider/foundation share overhang, negative free cash flow, and a richly valued equity trading near 45x trailing earnings.

Stock Performance

As of 29 October 2026, RPI.L trades at 585 GBp, up 1.65% on the day. The 52-week range is 253.8 to 1,082 GBp. Despite a 59.6% one-year gain, the stock is 45.9% below its 52-week high. It is trading below both the 50-day moving average of 602.61 and the 200-day moving average of 588.41. The 10-day average volume of 364,875 is below the 3-month average of 501,796. This is a technically weakened, post-climax picture rather than a stock breaking out to new highs.

CAN SLIM Analysis

Key Risks

Conclusion

Under CAN SLIM, current and annual earnings growth are excellent, and there are genuine new product and market catalysts. However, the stock is well below its 52-week high, below its 50-day and 200-day moving averages, and volume is contracting. O'Neil would not buy a stock in this technical condition; he would wait for a proper base and a new high on strong volume. The margin headwinds and working-capital strain add fundamental caution. Therefore, the appropriate rating is HOLD, with a bias toward buying only on a future high-volume breakout.

Overview

A Druckenmiller-style top-down macro and reflexivity-driven analysis of Raspberry Pi Holdings plc (LSE:RPI) as of 2026-10-29, using the provided interim results, trading updates, analyst commentary, and current price of GBp 585 to assess opportunistic risk/reward.

Macro Context

The macro backdrop is late-cycle but resilient, with central banks still wary of inflation impulses from AI capex, energy, and supply-chain shocks. The dominant structural force is the AI buildout driving demand for memory and compute, which has created a powerful but uneven memory price cycle. Geopolitical fragmentation, rearmament, and tariff uncertainty favor companies with UK-based manufacturing, sovereign capability, and supply-chain resilience. Edge AI is undergoing a secular migration from cloud to device, accelerated by falling compute cost per unit of AI inference. Regulation such as the EU Cyber Resilience Act is raising compliance barriers and increasing switching costs, benefiting well-structured platform owners.

Company Position in Macro Landscape

Raspberry Pi is a clear beneficiary of several current macro themes: edge-AI adoption, defense and sovereign computing demand, OEM flight-to-quality during memory shortages, and UK tariff/regulatory advantage. H1 2026 revenue rose 90% to $256.9m, adjusted EBITDA rose 108% to $40.3m, units grew 17% to 4.2m, and backlog doubled to 2.6m units. However, the company is also a temporary victim of the memory cycle: gross margin fell to 23% from 25%, working capital is absorbing cash, and profitable low-cost DRAM inventory has now been largely consumed.

Reflexivity Analysis

A positive reflexivity loop is underway: AI/edge enthusiasm and defense demand are driving OEM design wins, which build backlog, justify capacity expansion, strengthen the brand, and attract further OEMs. Investor sentiment has been highly reflexive too: the stock ran from roughly 292p in March to 1,082p by June on AI/OpenClaw hype, then round-tripped to 585p as margin and valuation concerns emerged. A recent CEO insider purchase at about 539.5p suggests management sees value after the drawdown. The negative loop is equally real: memory inflation forces inventory build, depresses free cash flow, raises debt utilization, and can compress reported margins. If H2 execution and backlog conversion accelerate, expectations can re-rate upward; if memory-cost margin normalization is worse than expected, the negative reflexivity could continue.

Competitive Position & Disruptive Threats

The competitive moat is strong but not unassailable. Raspberry Pi has an unmatched ecosystem, long product lifecycles, deep engineering talent, proprietary silicon capability, Sony manufacturing partnership, and increasing regulatory compliance advantages. Direct sales reached 81% of units, improving margin capture. Key threats include low-cost Chinese competitors, OEM customers choosing in-house designs at scale, and the semiconductor segment still being only about 1% of revenue. The current memory crisis is both a competitive advantage and a risk: it is driving share gains now, but once memory supply expands around 2028, that scarcity advantage fades and lower input costs may attract more competition.

Asymmetric Risk/Reward

At GBp 585, the stock is about 46% below its 52-week high of 1,082p and only slightly below its 200-day moving average of 588p. The pullback improves the asymmetry: the company is guiding full-year adjusted EBITDA above the pre-results consensus of $60-65m, and house broker Peel Hunt retains a 1,085p target. The downside case is a further de-rating toward 400-450p if H2 gross margins compress toward the mid-teens as low-cost memory inventory is depleted and FCF remains negative. Upside toward 800-1,000p is plausible over 12-24 months if edge-AI and defense orders scale, capacity expansion delivers, and memory costs stabilize. Optionality exists in silicon scale-up, recurring Raspberry Pi Connect revenue, and strategic value as a UK-headquartered sovereign-computing asset.

Key Risks

Investment Details

Overview

This is a Peter Lynch-style investment analysis of Raspberry Pi Holdings plc (RPI.L), applying his 'invest in what you know' framework, stock categorization, PEG analysis, balance sheet review, insider buying checks, and tenbagger assessment to the company's latest interim results and trading updates.

The Two-Minute Story

Raspberry Pi makes cheap, simple, credit-card-sized computers that ordinary people understand. Hobbyists and schools know the product, but the real business is now selling these boards as the brains inside industrial machines, smart-home devices, drones, medical gear, and defense equipment. Companies like Raspberry Pi because they do not have to become computer experts themselves. Right now, a global memory-chip shortage is hurting competitors. Raspberry Pi planned ahead, stocked up on cheap memory, lined up more suppliers, and kept shipping while others struggled. That is why revenue jumped 90%, profit more than doubled, and its order backlog doubled to 2.6 million units. The simple thesis: Raspberry Pi is becoming the trusted standard for low-cost embedded computing, with extra upside from edge AI and its own semiconductor chips.

Stock Category

Do You Understand This Business?

Yes. Raspberry Pi makes affordable single-board computers, modules, microcontrollers, accessories, and related software. An average person can understand the product: it is the small computer inside many gadgets and industrial products. The consumer/enthusiast angle gives a genuine edge because many retail investors see Raspberry Pi's brand strength and ecosystem firsthand, which institutions may underestimate. The main complexity is the component supply chain, especially memory pricing, but the core business is easy to explain.

PEG Ratio Analysis

Lynch's Checklist

Tenbagger Potential

A 10x from the current roughly £1.1 billion market cap would require an enormous expansion in profits and would likely take many years. It is possible if the semiconductor division scales toward hundreds of millions of units, edge AI becomes a major computing shift, and OEM/defense design wins multiply. But the current valuation already assumes strong growth. Lynch would say the best tenbaggers are often found when the stock is boring, cheap, and ignored. Raspberry Pi today is exciting and widely followed, so while it could still be a very good long-term investment, expecting a 10x from this price is aggressive.

Key Risks

Conclusion

This is a classic Peter Lynch-style situation where the business is understandable and the story is compelling, but the stock price already reflects much of the enthusiasm. Raspberry Pi has strong brand power, a loyal ecosystem, growing OEM adoption, and a genuine edge-AI angle. Unlike many hot technology stories, it is actually profitable and still has a reasonably manageable balance sheet. Recent CEO buying is a positive. However, the stock is neither boring nor overlooked, the normalized PEG is not cheap, and the first-half margin boost is partly temporary. Lynch would probably like the company but not the current price. For existing holders, the story is intact enough to hold. For new money, waiting for a better price or clearer evidence that margins can stay healthy through the memory cycle is the more disciplined move.