The index finished at 3,663.00, off 431.45 points or 10.54 percent for the week.
The index finished the week off 12.2 percent, its third worst weekly performance ever.
The index finished the year at 306.01, compared with its 1987 close of 260.35.
Sure enough, the three most widely followed indices all finished the year higher.
The index finished the week at 2,407.65, off 2.5 percent.
But the index still finished the year 2.2 percent higher than at the end of 1986.
The index finished the morning session up 60.33 points, or 2.5 percent, to 22,950.49.
The general index finished at 1,002.99 after climbing 1.57 percent for the day.
In one year, 1947, the index finished the year at the same level where it began.
The index recouped some of those losses but still finished down 257.83 points for the day.