TOPIX (TPX)
What is TOPIX ?
TOPIX (TPX) is a market benchmark with functionality as an investable index, covering an extensive proportion of the Japanese stock market. TOPIX is a free-float adjusted market capitalization-weighted index. TOPIX shows the measure of current market capitalization assuming that market capitalization as of the base date (January 4 ,1968) is 100 points. This is a measure of the overall trend in the stock market, and is used as a benchmark for investment in japan stocks.
Summary of TOPIX
| Index Name | TOPIX (Tokyo Stock Price Index, TPX) |
| Calculation Method | Free-float adjusted market capitalization-weighted |
| Start of Calculation | Jul. 1, 1969 The price return index is calculated and disseminated in real-time (per sec). |
| Base Date / Base Point | Jan. 4, 1968 / 100 points |
Component Issues
| TOPIX Component Stocks Weight |  |
|---|
| Results of the First Periodic Review and Component Stocks of TOPIX |  |
|---|---|
| Appendix | |
(Note)
- ･"TOPIX Component Stocks Weight" data as of the end of month will be updated on or after 4:20 pm on the last business day of next month.
- ･Constituents information as TOPIX is available on "J-Quants DataCube".
Please refer to "End of month Master Of Index" from the following link.
Contact
JPX Market Innovation & Research, Inc. Index Business
E-mail:index@jpx.co.jp
Calculation Method
Historical Index Value
| As of end of 2025 |  |
|---|
(Note)
- ･Open/High/Low/Closing Prices
- Figures are based on closing prices and a calender year.
TOPIX New Index Code information
| The result of periodic review of TOPIX new index series (October 30, 2026) | |
|---|---|
| The result of periodic review of TOPIX new index series (October 31, 2025) | |
| New Index Series Code of newly added companies | |
(Note)
- ･Please refer to the News item below, “Addition of TOPIX constituents” on or after November 2026.
The “New Index Series Code of newly added companies” will be discontinued on November 30, 2026.
TOPIX Related ETFs
Related Information
For more information on TOPIX revisions, click the link below.
Revisions of TOPIX