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system
what are trailing 12-month total returns?
user
total return is the percent change in value (including andy dividends) of an instrument.  the "trailing 12-month" means that your starting point is the value 12 months ago.  so the formula is: where v is the value of the instrument on the reference date, v0 is the value of the instrument 12 months prior to the reference date, and d is the amount of dividends paid between the two dates.
assistant