Today's surprise announcement by the Bank of Japan to implement more stimulus measures caused markets to rally generally, not least the home benchmark Nikkei 225. Recording a 4.8% gain, the market surged up to new multi-year highs. This ten-year graph shows the next chart target to be the 2007 highs at 17489 and 18300.4. The question is can the index maintain this rate of advance. Remember acceleration is a trend-ending feature, though the turning point is difficult to predict.