Nikkei dives over 5% amid global economic fears and tumbles to 20-month closing low as investor sentiment was hurt by a continued sharp fall in US equities and the yen's strengthening against the dollar. Index drops to below 19,000 level which was expected and accelerated by speculative futures-led selling. Technically, the Nikkei falls back to long-term trend support line and might test 2017's low in the near term. The huge gap left at 20,000 level will be filled if US markets rebound after a sharp fall to the bear zone but the overall sentiment is still weak...