Daily Test Statistics
The time-weighted equity of this strategy as of this stat date
If a test uses compounded stats (if S.Compounded is 1) then S.TWEQ is a compounded series of daily returns.
In this case, S.TWEQ starts a $1 and then is multiplied each day by (1 + that day's percent return), resulting in a "growth of $1" series.
When a test does not use compounding, S.TWEQ is the same as S.Equity.