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Extraordinary Popular Delusions and the Madness of Crowds (1841)
Charles Mackay (1814–1889) was a Scottish journalist and author. His book Extraordinary Popular Delusions and the Madness of Crowds (1841) documented historical financial bubbles like Dutch Tulip Mania and the Mississippi Scheme, and is considered the foundational text on crowd psychology in markets — still cited by investors like Warren Buffett and Jeremy Grantham.
🧠 Core Philosophy
Crowds are prone to collective excitement disconnected from economic reality — when everyone is certain, that is exactly when to be more careful, not less.
❓ Key Question
"Am I being swept along with the crowd, or thinking for myself?"
📚 Sources
Based on stocks already analyzed recently on the site — not a full-market scan. The score measures fit with the documented methodology, not a price forecast or buy recommendation.
| Stock | Charles Mackay Fit | |
|---|---|---|
| SO | 100/100 | Full analysis → |
| ALK | 100/100 | Full analysis → |
| STNE | 100/100 | Full analysis → |
| STZ | 100/100 | Full analysis → |
| APCX | 100/100 | Full analysis → |
| RARE | 100/100 | Full analysis → |
| ASHG.TA | 100/100 | Full analysis → |
| BA | 100/100 | Full analysis → |
| ARYT.TA | 100/100 | Full analysis → |
| HUN | 100/100 | Full analysis → |
⚠️ Important
This is a simulation of documented, published investment principles — not a forecast by Charles Mackayhimself, and not a claim he would actually buy this stock. The score measures how closely the stock's real data matches the method's documented criteria, nothing more.