Quote from makloda:
Drawdowns measured intraday, end of day, end of month (which would be the standard for hedge funds)?
In my own experience a 20% drawdown measured at month's end likely represents a 30-35% DD end of day (sometime in the middle of the month).
Drawdown measured tick by tick. E.g. if you lost 50% intraday during the 1987 crash then made it all back a few hours later, you still had a 50% drawdown.