1. Scuttlebutt research
Fisher's most enduring methodological contribution is scuttlebutt: the practice of building an investment thesis not by reading published financials alone but by talking systematically to people who know the company from many angles. Customers, suppliers, ex-employees, current competitors, research scientists at the company and its rivals, distributors, and industry consultants. Each conversation yields a fragment of evidence about product quality, management depth, competitive position, and culture. Aggregated, the fragments produce a picture that no SEC filing can convey. Fisher describes the method at length in Chapter 2 of Common Stocks and Uncommon Profits (1958). The classic example is his Motorola work in 1955: through conversations with engineers and customers, he satisfied himself that Motorola's R&D capability and competitive position were substantially stronger than Wall Street appreciated. The position became Fisher & Co.'s largest holding and was still held at his death in 2004. The method is labour-intensive (a single thoroughly scuttlebutted name might take months of work) which is exactly why it produces an edge: most institutional investors will not do it. invest-like cannot run scuttlebutt mechanically, but the Fisher-Fit Score's Management and Durable Demand pillars test for the indirect signals (R&D efficiency, employee retention, customer concentration) that good scuttlebutt would uncover.