Market Profile, TPO, Volume Profile ... It has lots of different names, but what exactly is it, and how can it be used in day trading?

Market profile is a type of chart that is used to see where (at what price) and when (at what time) most of the trading is occuring. By using market profile charts, traders can see exactly where other traders are making their trades, and where the most recent support and resistance levels are.

A description of market profile charts, with explanations of how they are interpreted, and suggestions for how they can be used in trading, is available in the market profile article.