Poor Charlie's Almanack: The Essential Wit and Wisdom of Charles T. Munger · chapter 3 · id poor-charlies-almanack-c3-04-munger-advocates-philip-fisher

“Munger advocates Philip Fisher's 'scuttlebutt' method -- gathering qualitative intelligence about a company from suppliers, customers, and competitors before investing.”

holdsconfidence: high✓ ZHP-verified + red-teamed

Receipts

Fisher, 'Common Stocks and Uncommon Profits' (1958)source alive

The most rewarding stock purchases occur by going to five companies in an industry, asking each about the relative strengths and weaknesses of the other four.

Cohen, Frazzini & Malloy, 'The Small World of Investing,' Journal of Finance (2008)FLAGGED: DOI not in registry

Mutual fund managers with shared educational networks with company boards earn abnormal returns of 7.8% per year on connected holdings.

This claim is a stable, citable object. If you can falsify a verdict, tell us — corrections are loud here.