Tokyo stocks plunged on Tuesday as the few Asian markets open on Christmas Day suffered a holiday rout on fears about the US economy and a government shutdown in Washington.
Tokyo markets, which were closed on Monday for a national holiday, plummeted at the open on Tuesday, with the Nikkei down more than 5% – over 1,000 points – shortly before the morning break.
The fall followed a brutal holiday-shortened session on Wall Street that saw US stocks sink for a fourth straight session as investors took little heart from efforts by the US Treasury secretary, Steven Mnuchin, to reassure them.
https://www.theguardian.com/world/2018/dec/25/tokyo-stocks-plunge-in-christmas-rout-amid-fears-over-us-economy