Now for the how. My methods did evolve over decades, but the rules can be categorized in three parts, ordered by importance:
- money management
- position management
- stock picking.
Money management is the most important part. You can have the best stocks and still lose money, as my example with Peter Lynch in the last post. In the other hand you can choose the worst stocks ever; if they do not correlate you can still make money thanks to Shannons demon which is money- and position management.
Sounds strange and is strange, but true.
Money management answers the questions how much to invest in each position, how to diversify stocks and sectors or even other assets, but that I would put a level higher than the stock market methods. It covers margin loans too, that is a very important part if you use margin loans. If you donât have a clear strategy you will sooner or later go broke with margin loans.
Position management is the second important part. It answers questions like when to sell, when to sell partially, when to buy more of a position. Very important, but not that important as money management. It is easy to gain, everybody knows that. But to lose is hard and therefor at the end more important. Take losses whenever your strategy tells you, even if it hurts. It will hurt much more if you keep losing.
The least important part is stock picking. You may even decide not to fully automate it as most investors do. But I would strongly recommend some rules to exclude stocks. It is simply statistics and probabilities. Nobody knows the future but there are probabilities that are not fully priced in. That is my special department. I think excluding some stocks is more important than including others; you avoid losses. Gains come in automatically.
Some literature, there is tons of good books, but I would recommend starting with those:
- Thinking fast and slow. Not exactly a finance book, but explains the psychological part and many bias.
- What works on Wall Street. Some mechanical strategies, a lot of statistics. Take with a grain of salt as numbers did change from edition to edition. But a nice introduction to mechanical trading.
- What I learned losing a million Dollars. Probably you can safe yourself that Million if you read this first.






