worst performing country index in 1988

The Dow Jones Industrial Average (DJI) had the lowest return in 1988 by a major index, returning 11.8%.

ASSET YEAR % RETURN
the Dow Jones Industrial Average (DJI)
1988
11.85%
the S&P 500 (GSPC)
1988
12.39%
the Nasdaq Composite (IXIC)
1988
13.82%