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Baillie GiffordDeep research8 Oct 2026Source: bailliegifford.com

Lam and Alnylam: time well spent

Baillie Gifford is an Edinburgh investment partnership founded in 1908, famous for ultra-long-horizon, high-conviction growth investing — its early stakes in Amazon, Tesla and NIO are classics. Its "actual investors" philosophy holds world-changing companies on 5-10 year views; AUM is around $120bn. The Insights column carries its managers' investment views and thematic research.

多位合伙人 · 1908 · 英国爱丁堡Long-term growth / Global

In plain words

This piece says two companies—Alnylam and Lam Research—have built hard-to-copy advantages through decades of accumulated expertise. The author (Baillie Gifford fund) is optimistic, believing the market underestimates their long-term potential. Alnylam, a gene-silencing drugmaker, has a clinical success rate over 50% (industry average 10%) and is investing $250 million to expand capacity, aiming to treat hypertension (1.4 billion patients). Lam Research makes chip-making equipment; once its machines are embedded in a customer's factory, they're tough to replace, and AI-driven demand for 3D chips could sustain strong growth longer than expected.

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At a Glance

One-sentence summary: The author argues that the specialized knowledge accumulated over time forms a moat for Alnylam and Lam Research that is difficult to replicate, and long-term investors should leverage their time advantage to position for their undervalued, sustained growth potential. [Optimistic]

  • Alnylam's clinical success rate exceeds 50%, far above the industry average of 10%, thanks to over two decades of accumulated organizational knowledge.
  • Lam Research collaborates with customers seven to eight years before a technology inflection point enters production, and its equipment, once embedded in customer processes, is difficult to replace.
  • Alnylam is investing $250 million to expand capacity, aiming to extend its RNAi technology from rare diseases to larger populations such as hypertension (approximately 1.4 billion patients globally).
  • Market consensus predicts a sharp slowdown in Lam Research's growth, but the author believes that AI-driven demand for three-dimensional chips could drive its robust growth well beyond expectations.
~9 min full read · 9 sections
Deep Analysis

Time-Accumulated Expertise: The Unassailable Moat of Alnylam and Lam Research

The report argues that Alnylam Pharmaceuticals and Lam Research, two new additions to Baillie Gifford’s Long-Term Global Growth (LTGG) portfolio, operate in vastly different businesses yet share a common advantage: decades of accumulated expertise that competitors find difficult to replicate. The author emphasizes that time is not only an ally for long-term investment teams but also a moat-builder for the companies themselves.

The report opens with its core thesis: “Lam and Alnylam illustrate something different: how time can create an advantage for the companies themselves.”

Alnylam: From Scientific Exploration to Commercial Biopharma

Alnylam is the leader in RNA interference (RNAi) technology, with a clinical success rate exceeding 50%—far above the industry average of 10%—thanks to over two decades of deep organizational knowledge. The company already has six approved drugs and is expanding from rare diseases into larger patient populations.

  • Long-term tracking and entry timing: Baillie Gifford’s small-cap strategy has held Alnylam since 2014, accumulating over a decade of institutional knowledge. Recent share price weakness provided an entry opportunity for the LTGG portfolio.
  • Technology barrier: Alnylam spent nearly a decade solving the critical challenge of delivering drugs to the liver, with over 80% of its R&D spending in the first decade dedicated to this effort. This lengthy “apprenticeship” has built strong organizational knowledge in target selection, trial design, manufacturing, and distribution.
  • Financial and capacity expansion: The company has turned profitable and can now fund more of its own R&D. It is investing $250 million to expand manufacturing capacity in Massachusetts, reducing costs to apply RNAi technology to larger populations requiring more affordable treatments.
  • Future pipeline:
  • Zilebesiran: Targets the approximately 1.4 billion hypertension patients globally. The drug requires only two injections per year, potentially solving the compliance issue of daily pills.
  • Mivelsiran: Targets Alzheimer’s disease and cerebral amyloid angiopathy (CAA). This would be Alnylam’s first drug to deliver RNAi beyond the liver, opening a vast new market if successful.

The report notes that Alnylam’s existing drugs will dominate its financial performance for the next few years, while evidence of a broader RNAi platform may not emerge until the early 2030s. Baillie Gifford’s patience allows it to look further ahead.

Lam Research: Positioning Ahead of the 3D Chip Era

Lam Research specializes in deposition and etching equipment needed to manufacture three-dimensional chips. Its ability to collaborate with customers seven to eight years ahead of technology inflection points gives it a head start in the AI-driven wave of chip demand. As Moore’s Law yields diminishing returns in shrinking transistor sizes, the chip industry is shifting to “building upwards,” directly benefiting Lam’s business.

  • Industry trend: AI is driving surging demand for computing power and memory, but the path of improving performance by shrinking transistors is hitting bottlenecks. The report cites Lam’s long-term partnership with IMEC (Interuniversity Microelectronics Centre), noting that technological progress increasingly requires “building upwards.”
  • Lam’s core business: Lam’s equipment deposits material layers on chips and etches precise structures. The more three-dimensional chips become, the greater the demand for both processes.
  • Forward-looking investment: CEO Tim Archer notes that Lam begins collaborating with customers seven to eight years before a technology inflection point enters production. This multi-year preparation builds the manufacturing capabilities the industry needs.
  • Memory chip case: The report uses the analogy of a desk (DRAM, fast and expensive) and a filing cabinet (NAND, slow, cheap, and high-capacity) to explain the difference between the two main memory types. As AI generates massive amounts of data, demand for both types of memory is growing.

Investment Implications

The core investment logic of the report is to seek companies with deep moats built through time accumulation, and to use the time advantage of long-term investing to position before the market fully recognizes their potential. Readers should note that this is a perspective from the holder’s standpoint. The report highlights the strengths of Alnylam and Lam but does not address competitive risks or the possibility of technological failure.


Lam’s Competitive Advantage Is Reinforced by Time and Embedding Effects

The report argues that Lam Research’s expertise in NAND is gaining broader application as DRAM and logic chips transition to three-dimensional architectures, and that time itself constitutes its moat. The author notes that NAND began stacking layers upward years ago to increase capacity, and Lam invested early to establish a leading position. Now that DRAM and logic chips are also moving toward verticalization, Lam can apply its NAND expertise to these new directions. The author’s original statement is: "Time reinforces that advantage. Once a Lam Research machine is embedded in a customer’s production process, it is difficult to dislodge." This means: "Time reinforces this advantage. Once Lam Research’s equipment is embedded in a customer’s manufacturing process, it is difficult to replace." A single machine can serve in a factory for over a decade, generating ongoing revenue from maintenance, spare parts, and upgrades. Meanwhile, Lam can learn alongside the customer during this period and feed that experience back into the next generation of equipment, thereby solidifying its technological leadership.

Market Skepticism About Growth Sustainability May Be Underestimated

The author believes that consensus forecasts predict Lam’s revenue growth will slow sharply after a recent surge, but a longer time horizon may reveal more enduring opportunities. The report points out that AI is driving higher semiconductor investment, three-dimensional architectures are channeling more spending toward processes where Lam excels, and Lam itself is expected to gain market share and improve margins. The author states: "AI is expanding the semiconductor market just as the industry becomes more dependent on manufacturing capabilities Lam began investing in years ago. We think that could sustain strong growth for considerably longer than current expectations imply." This means: "AI is expanding the semiconductor market at a time when the entire industry is becoming more reliant on manufacturing capabilities that Lam began investing in years ago. We believe this could sustain strong growth for a period far longer than current expectations suggest."

Common Ground Between the Two Companies: Hard-to-Replicate Expertise Built Over Time

The report uses Lam Research and Alnylam as examples to emphasize that long-accumulated expertise is a difficult-to-replicate competitive advantage, with the potential to be applied to opportunities larger than ever before. The author notes that Alnylam is attempting to expand RNAi technology from the liver to other organs, while Lam is applying its NAND experience to increasingly three-dimensional DRAM and logic chips. Both companies benefit from years of accumulated, hard-to-replicate expertise and are poised to apply it to markets larger than in the past.

Investment Implications

The report implies that the market may be overly pessimistic in pricing the sustainability of Lam Research’s growth, and Baillie Gifford’s long-term perspective allows it to capture this underestimated persistence opportunity. Readers should note that this is a perspective from a position holder. The author uses the time advantage argument to justify the position, but does not provide a specific timeline or quantitative evidence to support the claim of "more sustained growth."


Position Moves

Ticker Direction Author's One-Sentence View Key Data
Alnylam Pharmaceuticals New Position Built a position after long-term tracking and taking advantage of share price weakness, bullish on the potential of its RNAi platform expanding from the liver to other organs Clinical success rate >50% (industry average 10%); investing $250 million to expand production; Zilebesiran targeting 1.4 billion hypertension patients
Lam Research New Position Early positioning in 3D chip equipment; AI demand will drive growth to consistently exceed market expectations Collaborates with clients seven to eight years in advance; equipment service life exceeds ten years, generating recurring maintenance and upgrade revenue