Why does the contract not have the same increment as the index? How mismatched are they? If the index goes from 1,700.05 to 1,700.30 does the contract go from 1,700 to 1,700.5?
Here, if it's 10,000 yen per point, does that mean that on this chart from the low of 1,741 to the price of 1,761...