Overtrading
Trading more often than one's own rules require: the activity feels like work, and the portfolio pays for it in spread, commission and tax events.
How to read the number
It usually grows out of a need to respond: every headline seems to demand an action, although the plan neither expected one nor changed.
When the metric lies
The costs are spread across many small trades and are invisible in each one. They can be seen only in the total for a period, where they already rival the result.
Also known as: excessive trading