What is money management?
Money management is when you budget the money that comes in to you. You have set amounts you can spend each month and set amounts that you put away in savings.
Money management is used in Investment management and deals with the question of how much risk a decision maker should take in situations where uncertainty is present. More precisely what percentage or what part of the decision maker's wealth should be put into risk in order to maximize the decision maker's utility function. Money management gives practical advice among others for gambling and for stock trading as well.