Japanese shares tumble, Nikkei below break-even level for BOJ

Japanese shares tumbled on Wednesday on concerns about the economic hit from the coronavirus, with the broad Topix index falling 1.53% to mark its lowest close since November 2016.

The Nikkei average lost 2.27% to a 14-1/2-month low of 19,416, slipping below the estimated average cost of the Bank of Japan's stock investments over almost seven years.