“Money management is like sex: Everyone does it, one way or another, but not many like to talk about it and some do it better than others. But there’s a big difference: Sex sites on the Web proliferate, while sites devoted to the art and science of money management are somewhat difficult to find.”
Quote source: Gibbons Burke
Essentially, money management tells you how many shares or
contracts to trade at a given point.
Money management is a defensive concept. It keeps you in the game to play another day. For example, money management tells you whether you have enough new money to trade additional positions. Don’t confuse money management with stop placement. Stop placement does not address the how much question.
Money management is risk management. Risk management is the difference between success or failure in trading. Trading correctly is 90% money and portfolio management. Unfortunately, this is a fact that most people want to avoid or don’t understand. Once you have your money management under control, your discipline and psychology is 100% of your success.
Money management optimizes capital usage. Few have the ability to view their portfolios as a whole. Even fewer traders and investors make the move from a defensive or reactive view of risk, in which they measure risk to avoid losses, to an offensive or proactive posture in which risks are actively managed for a more efficient use of capital. Trend following risk management formulas and philosophies are key to increasing profits while controlling risk.
Source:
https://turtletrader.com/money/
See also:
https://www.academyft.com/learn-how-to-trade-online-money-management.htm
https://www.investopedia.com/walkthrough/forex/intermediate/level6/money-management.aspx
https://www.futuresmag.com/2011/12/31/simple-money-management-wins-over-time?page=1
https://tradingsim.com/blog/day-trading-money-management/