Definition
Japan's broader stock index, covering a wide range of companies on the Tokyo Stock Exchange's Prime market, weighted by market value.
The story
Where the Nikkei 225 is price-weighted and tilted toward a few big names, Topix weighs companies by size, so it gives a broader picture of Japanese stocks.
Why markets watch it
Comparing the two shows whether a move in Japan is broad or concentrated.
Connects to
We explain why it moves markets. What you do with it is your call. Commentary and education only. Not financial advice. All terms