John Huber

Overview

John Huber is the founder of Saber Capital Management, a value-focused investment firm. He writes extensively on capital allocation, ROIC, mean reversion, and how power law dynamics shape modern markets.

Investment Philosophy

ROIC as the Key Metric

Huber emphasizes Return on Invested Capital (ROIC) as the primary measure of business quality:

"The single best measure of a company's financial performance is return on invested capital."

His series on ROIC explores:

The importance of ROIC in determining competitive advantage
Reinvestment vs. legacy moats
How ROIC correlates with long-term value creation

Mean Reversion Challenges

Huber questions whether traditional mean reversion still applies in modern markets:

Why Mean Reversion Has Weakened:

Digital vs. Physical — Digital businesses scale instantly without capital constraints
Data Economics — Network effects create winner-take-all dynamics
Fixed costs — Marginal cost of serving additional customers approaches zero

"When growth requires bits instead of atoms, there is no ceiling. Demand can scale very fast, but supply can also scale in lock step."

The Power Law in Markets

Huber notes that most value creation comes from a small minority of companies—the 80/20 rule in action. This has implications for:

Diversification strategies
Concentration vs. indexing
Understanding competitive dynamics

Key Ideas

Network Effects and Moats

Huber argues that network effects create durable moats that don't mean-revert because:

More users make the service more valuable to existing users
Switching costs increase with time
Dominant platforms collect "taxes" on the broader economy

The End of Mean Reversion?

In his essay "End of Mean Reversion?", Huber examines why great companies seem to defy gravity:

"Why do excess returns in some businesses seem more likely to expand than to mean-revert?"

He identifies:

Digital businesses with zero marginal cost of scaling
Data network effects that strengthen with size
The winner-take-all nature of platform businesses

Related Concepts

Source

Based on Saber Capital writings by John Huber.