Why are my statistics changing on a daily basis?

In order to see the most relevant information regarding your progress as a trader, your statistics are a rolling 90 day risk assessment. This means that the data represented on your statistics page will be from the last 90 days of trading. 

Imagine it like a window on a timeline of your trading progress, as time goes on, statistics older than 90 days become obsolete. This makes it so that once you have traded for over 90 days you will see your statistics adjust each day.