what is the best returning index since 2008

The Nasdaq Composite (IXIC) has had the highest return since 2008 by a major index, returning 924.6%.

ASSET% RETURN
the Nasdaq Composite (IXIC)
924.56%
the S&P 500 (GSPC)
426.08%
the Dow Jones Industrial Average (DJI)
285.9%