Nikkei JASDAQ Stock Average (Ceased)

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The Nikkei JASDAQ Stock Average (Nikkei JASDAQ Average) is a price-weighted stock index adjusted by the divisor, same as the Nikkei 225. This index was called the Nikkei Over-The-Counter Stock Average when it started the calculation.
The Nikkei JASDAQ Average is comprised of all domestic common stocks in the JASDAQ of the Tokyo Stock Exchange, excluding Bank of Japan, ETFs, REITs, preferred equity contribution securities, tracking stocks (on subsidiary dividend) etc other than common stocks.
Calculation method
Each constituent stock price is adjusted by the price adjustment factor. The Nikkei JASDAQ Average is calculated by dividing the summation of the adjusted prices by the divisor. The purpose of the divisor is to maintain the continuity of the index by eliminating the effect of external factors not directly related to the market movement in calculating the price-weighted index.
Base date etc
The commencement date of the calculation was April 1st, 1985 (calculated retroactively back to November 11th, 1983). Since July 16th 2013, the Nikkei JASDAQ Average was currently calculated every 15 seconds while the Tokyo Stock Exchange opens (calculated every 1 minute previously). The index ceased calculation on April 1st, 2022 with the final value on the same day.
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