Assume that on a particular day, the DJIA opened at 11,739.19. The divisor at that time was .132316791. What would the new index level be if all 30 stocks on the DJIA increased by $1.00 per share on the next day?
Solution
Index value = 11739.19
Divisor = .132316791
Sum of all 30 stocks= index value * divisor
Sum of all 30 stocks = 11739.19*.132316791= 1553.291949739
Stock increase by $1 it means new sum of all 30 stocks will be = 1553.291949739+30= 1583.291949739
New divisor will be same as of old divisor
New Sum of 30 stocks = 1583.291949739
New index level = new sum of 30 stocks / new divisor
New index level = 1583.291949739/.132316791= 11965.92
New index level = 11965.92
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