what is the best returning index in march 2018

The S&P 500 (GSPC) had the highest return in March 2018 by a major index, returning -2.7%.

ASSET MONTH % RETURN
the S&P 500 (GSPC)
March 2018
-2.74%
the Nasdaq Composite (IXIC)
March 2018
-2.9%
the Dow Jones Industrial Average (DJI)
March 2018
-3.68%