Quality and competitive advantage: 3 ETFs for Buffett fans
Warren Buffett never bought stocks based on a spreadsheet. He looked for businesses with a durable competitive advantage, high return on capital, low debt, and strong cash flow, all at a reasonable price. Some ETFs try to translate this philosophy into rules that can be mechanically applied to hundreds of companies. The results are surprisingly different: one approach ends up with technology giants, another with refineries, pharmaceutical companies, and tobacco. Which ETFs follow Buffett's approach and what returns do they offer?

Key points
Can Buffett's investment style be turned into an ETF? Three funds attempt it, but each defines a "quality company" completely differently.
The same idea creates surprisingly different portfolios. One approach ends up with technology giants, another with energy, pharmaceuticals, or tobacco.
Even high return on equity doesn't automatically mean a quality business. Some metrics can be significantly improved by cycles, leverage, or buybacks.
Quality and a reasonable price are not the same. Some funds filter great companies but don't consider how much the investor is currently paying for them.
Can a mechanical "Buffett" approach beat the index itself? We analyzed that in this analysis.
Buffett's investment style is often reduced to the slogan "buy great companies at a reasonable price." In practice, it's a combination of several conditions.
The company must have an economic moat, i.e., a durable advantage that prevents competitors from eroding above-average profits.
It must earn a high return on equity without excessive use of debt.
It must generate real cash, which Buffett calls owner earnings.
And it must be available at a price that is not too high.
None of these criteria can be reliably read from a single indicator. Competitive advantage shows up indirectly in data, for example through consistently high margins or the ability to grow without large investments. That's why each factor ETF provider chooses its own set of proxy indicators. The three funds in this analysis represent three different answers to the question of how to find quality.