The Nikkei and the Dow are joined at the hip

• The Nikkei and the Dow may be joined at the hip when it comes to behavior.
• Still, the Nikkei is moving faster: Low-to-high for the Nikkei is 18 percent compared to a 13 percent return from the Dow for the same behavioral move.

A cyclist rides past an electronic stock board showing a figure of the Nikkei Stock Average outside a securities firm in Tokyo, Japan, on Friday, Jan. 12, 2018. 

Tomohiro Ohsumi | Bloomberg | Getty Images

Coincidence in the markets can mean nothing, or it can provide a very useful trading edge.

Looking at the below chart, you could be excused for thinking that was the Dow for the period from September 2017 to the current date. The behavioral characteristics are the same.

However, it's the