Moats
high confidence — compiled with source citation from the investment brain.
Moats
Moats
A moat is a durable competitive advantage that lets a business earn returns competitors cannot erode. The term is central to warren-buffett's and berkshire-hathaway's framework for judging business quality, and marks the dividing line between the cigar-butt bargains of Buffett's early years and the wonderful businesses he came to prefer.
Buffett states the goal directly: one of Berkshire's uses of capital is widening the moats around our operating businesses that give them durable competitive advantages. The moat is not a static asset but something to be reinforced over time — the language of widening implies active stewardship, not passive ownership.
GEICO is Buffett's clearest moat example. Its low-cost operating structure is "a moat – an enduring one – that competitors are unable to cross", which let the company raise its auto-insurance market share from 2.5% in 1995 to 10.8% by 2014. The moat here is a genuine cost advantage, not brand affection — a structural gap competitors cannot close by spending more.
See's Candy (sees-candy) is the moat case that taught Buffett the concept. In 1972 it earned about $4 million pre-tax on only $8 million of net tangible assets, but held "a broad and durable competitive advantage that gave it significant pricing power" — an asset that did not appear on the balance sheet. The consequence was virtually certain earnings growth with "only minor amounts of incremental investment", producing decades of gushable cash. See's moat was a brand with pricing power; its value showed up not in assets but in the ability to raise prices without losing customers.
Buffett frames the moat as the answer to his own earlier method. Munger's blueprint — to forget what you know about buying fair businesses at wonderful prices, and instead buy wonderful businesses at fair prices — is precisely a shift from price-based edge to moat-based edge. A cigar-butt is cheap because it has no moat; a wonderful business can be bought at a fair price because its moat protects its economics.
The moat and the price still interact. Buffett's two-part rule in the 1992 letter pairs "businesses we believe we understand" (simple, stable) with "a margin of safety in our purchase price" — a moat tells you the quality of the earnings, but not whether today's price already overpays for it. See margin-of-safety. And a moat is only as good as the capital decisions made on top of it: a moated business that misallocates its cash destroys value regardless. See capital-allocation. Moats are, in effect, the quality half of the pair that howard-marks deliberately under-weights — a reminder of how differently the two traditions in this wiki weight business quality versus price.
See also
Sources
berkshire-hathaway/Letters-Markdown/2008 - Letter to Shareholders.mdberkshire-hathaway/Letters-Markdown/2015 - Letter to Shareholders.mdberkshire-hathaway/Letters-Markdown/2014 - Letter to Shareholders.mdberkshire-hathaway/Letters-Markdown/1992 - Letter to Shareholders.md