The work never ends

Summary: Value investing principles sound simple enough to put on a coffee mug, but the market is not a coffee mug. Fifteen years of lessons on why a falling price is not proof of value, why patience needs a pencil, and why the work of being a disciplined investor never actually ends.

Summary: Value investing principles sound simple enough to put on a coffee mug, but the market is not a coffee mug. Fifteen years of lessons on why a falling price is not proof of value, why patience needs a pencil, and why the work of being a disciplined investor never actually ends. Fifteen years is a long enough time in the stock market to learn a few things, forget a few clever things and become suspicious of most things that sound exciting. When I joined Value Research, I understood value investing mostly as a set of ideas: buy good businesses, pay sensible prices, be patient, avoid the noise, think long term. These are good principles and like most good principles, they sound simple enough to put on a coffee mug. The market, however, is not a coffee mug. It has a habit of testing every neatly laid out principle against messy reality. Over these years, the biggest lesson has not been that value investing is about buying cheap stocks. It is that value investing is about doing the work before a stock looks obvious, and continuing to do the work after it enters the portfolio. The first part protects you from enthusiasm. The second protects you from complacency. Price is not proof The first thing the market teaches you is that price is not proof. A falling stock does not automatically become attractive, just as a rising stock does not automatically become expensive. Both may be true or false. The job is to understand the business underneath. This sounds basic. It is also where many mistakes begin. A stock falls 30 per cent; the valuation looks cheaper than in the past, and the mind begins to wonder, “Maybe this is value.” Sometimes it is. Often, it is just a weaker busin

This article was originally published on July 01, 2026.