TOPIX (TPX)
For more information on Index revisions after April 2022, click the link below.
Overview of Index Revisions
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 |  |
|---|
| Review of issues to which the liquidity factor is applied (As of April 30, 2025） |  |
|---|---|
| List of Phased Weighting Reduction Constituents in TOPIX (As of October 7, 2022） | |
| List of Phased Weighting Reduction Constituents in TOPIX (After Re-evaluation) | |
(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 2024 |  |
|---|
(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 31, 2025) | |
|---|---|
| The result of periodic review of TOPIX new index series (October 31, 2024) | |
| New Index Series Code of newly added companies | |
TOPIX Related ETFs
Related Information
Calculation Method after revisions of TOPIX and other indices
| TOPIX Next-tier | |
|---|---|
| Tokyo Stock Exchange Growth Market 250 Index | |
| Free Float Weight Calculation Methodology | |