JPX-Nikkei 400
E192391
JPX-Nikkei 400 is a Japanese stock market index composed of companies selected for their high profitability, capital efficiency, and investor-focused management practices.
All labels observed (4)
| Label | Occurrences |
|---|---|
| JPX-Nikkei 400 canonical | 1 |
| JPX日経インデックス400 | 1 |
| Japan Exchange Group indices | 1 |
| TOPIX Mid400 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1653371 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: JPX-Nikkei 400 Context triple: [Tokyo Stock Exchange, hasListedIndex, JPX-Nikkei 400]
-
A.
Nikkei 225
The Nikkei 225 is Japan’s leading stock market index, tracking 225 major blue-chip companies listed on the Tokyo Stock Exchange.
-
B.
TOPIX
TOPIX is a major Japanese stock market index that tracks all domestic common stocks listed on the Tokyo Stock Exchange's Prime Market.
-
C.
Nikkei
Nikkei are people of Japanese descent living outside Japan, particularly in the Americas and other parts of the Japanese diaspora.
-
D.
Nagoya Stock Exchange
The Nagoya Stock Exchange is Japan's second-largest securities exchange, serving as a regional financial hub for companies based in the Chūbu industrial region.
-
E.
Osaka Securities Exchange
Osaka Securities Exchange is a major Japanese financial marketplace specializing in securities and derivatives trading, historically one of the country’s principal stock exchanges alongside the Tokyo Stock Exchange.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: JPX-Nikkei 400 Target entity description: JPX-Nikkei 400 is a Japanese stock market index composed of companies selected for their high profitability, capital efficiency, and investor-focused management practices.
-
A.
Nikkei 225
The Nikkei 225 is Japan’s leading stock market index, tracking 225 major blue-chip companies listed on the Tokyo Stock Exchange.
-
B.
TOPIX
TOPIX is a major Japanese stock market index that tracks all domestic common stocks listed on the Tokyo Stock Exchange's Prime Market.
-
C.
Nikkei
Nikkei are people of Japanese descent living outside Japan, particularly in the Americas and other parts of the Japanese diaspora.
-
D.
Nagoya Stock Exchange
The Nagoya Stock Exchange is Japan's second-largest securities exchange, serving as a regional financial hub for companies based in the Chūbu industrial region.
-
E.
Osaka Securities Exchange
Osaka Securities Exchange is a major Japanese financial marketplace specializing in securities and derivatives trading, historically one of the country’s principal stock exchanges alongside the Tokyo Stock Exchange.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
equity index
ⓘ
stock market index ⓘ |
| abbreviation |
JPX400
ⓘ
linked to:
JPX
|
| baseDate | 2013-08-30 ⓘ |
| baseValue | 10000 ⓘ |
| calculationMethod | free-float adjusted market capitalization weighted ⓘ |
| calculationStartDate | 2014-01-06 ⓘ |
| category | Japanese stock market indices ⓘ |
| country | Japan ⓘ |
| currency | Japanese yen ⓘ |
| focus |
corporate value creation
ⓘ
shareholder value ⓘ |
| geographicScope | domestic Japanese market ⓘ |
| hasComponentExchange | Tokyo Stock Exchange ⓘ |
| hasDerivativeProducts |
exchange-traded funds
ⓘ
futures ⓘ |
| inception | 2014-01-06 ⓘ |
| isCompiledBy | Nikkei Inc. ⓘ |
| isJointlyDevelopedBy |
Japan Exchange Group
ⓘ
Nikkei Inc. ⓘ |
| isPartOf |
Japan Exchange Group indices
ⓘ
linked to:
JPX-Nikkei 400
|
| languageRequirement | English disclosure encouraged ⓘ |
| launchDate | 2014-01-06 ⓘ |
| maintainedBy | Japan Exchange Group ⓘ |
| numberOfConstituents | 400 ⓘ |
| objective |
encourage investor-oriented management practices
ⓘ
promote capital efficiency among Japanese companies ⓘ provide benchmark for high-quality Japanese equities ⓘ |
| operator |
Japan Exchange Group
ⓘ
Nikkei Inc. ⓘ |
| publisher | Nikkei Inc. ⓘ |
| rebalancingFrequency | annual ⓘ |
| regionCovered | Japan ⓘ |
| relatedIndex |
Nikkei 225
ⓘ
TOPIX ⓘ |
| reviewFrequency | annual ⓘ |
| sectorCoverage | multiple sectors ⓘ |
| selectionCriteria |
capital efficiency
ⓘ
corporate governance ⓘ investor-focused management ⓘ market capitalization ⓘ operating profit ⓘ profitability ⓘ three-year average return on equity ⓘ timely disclosure in English ⓘ trading value ⓘ |
| targetCompanies | Japanese listed companies ⓘ |
| weightingScheme | free-float adjusted market capitalization ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: JPX-Nikkei 400 Description of subject: JPX-Nikkei 400 is a Japanese stock market index composed of companies selected for their high profitability, capital efficiency, and investor-focused management practices.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: JPX-Nikkei 400
linked to: JPX-Nikkei 400