Summary
What it does: enterprise software.
Elevator pitch: arguably one of the finest franchises ever built, with deep distribution advantages that let it deliver innovations cheaply to a huge customer base.
Mental model: moat (read about my mental models here).
Valuation and potential returns: 21x June 2027 EPS estimates and growing EPS 20% per year.
Exchange and ticker: Nasdaq, MSFT
Stock price and market cap: $401, $3.2tn.
Do I own it? Yes.
IR website: here.
Link to Part II: LLMs and Agents.
About this blog: I have been investing for 25 years, professionally and personally. I look for stocks that have a high probability of compounding at 15% for at least 5 years with limited downside. I write these stocks up on my blog. You can find more about me, my philosophy, my mental models, and my portfolio structure on my site.
Disclaimer: This post is for informational and educational purposes only. Building Arks is not licensed or regulated to provide any financial advisory service and nothing published by Building Arks should be taken as a recommendation to buy or sell securities, relied upon as financial advice, or treated as individual investment advice designed to meet your personal financial needs. You are advised to discuss your personal investment needs and options with qualified financial advisers. Building Arks uses information sources believed to be reliable, but does not guarantee the accuracy of the information in this post. The opinions expressed in this post are those of the publisher and are subject to change without notice. The publisher may or may not hold positions in the securities discussed in this post and may purchase or sell such positions without notice.
Introduction
I have owned Microsoft since 2010. What gave me the confidence not to sell - even as the company transformed and the multiple expanded - was a deep conviction in Microsoft’s competitive moat. Not its technology. I don’t think technology ever constitutes a sustainable advantage in itself. The moat was distribution. Microsoft sells to enterprise. Enterprises move slowly. Microsoft is deeply embedded: enterprise IT departments are built on its products, and it has a huge reseller network reaching millions of SMEs. Microsoft leverages this difficult-to-replicate incumbency by copying innovations (it is the quintessential second-mover) and bundling them cheaply alongside existing products. This has been remarkably hard for standalone competitors to fight.
Distribution + time to react + cheap bundling = a moat full of crocodiles.
Does AI change this?
Satya
Satya Nadella is the CEO of Microsoft and the chief architect of its renaissance over the last 15 years. Two things he has said over the years rattle round my brain:
The software industry - and by implication, Microsoft - has no franchise value.
With agentic AI, Microsoft’s TAM is every process in every organisation.
Both of these comments are mind-blowing. One is a stark warning. The other is exceptionally bullish. They appear contradictory, yet both are right. This makes analysing Microsoft a fascinating challenge.
Why I wrote this
Microsoft is a largeish position for me, and I have a long term time horizon - 5 years at minimum, and ideally 10 years or more. However Microsoft’s business is changing rapidly as AI alters its competitive landscape. I needed a better framework for understanding how the industry is evolving. A vast amount has been written about this, although a lot of it is very short term (Azure only grew 39% in 2q26, not 40%!). This piece is an attempt to synthesise what I have read into a framework for interpreting newsflow over the next few years: what will be the signs that Microsoft’s competitive position is strengthening, or weakening?