what is the worst returning index since 2010

The Dow Jones Industrial Average (DJI) has had the lowest return since 2010 by a major index, returning 295.5%.

ASSET % RETURN
the Dow Jones Industrial Average (DJI)
295.46%
the S&P 500 (GSPC)
406.91%
the Nasdaq Composite (IXIC)
681.42%