S&P MidCap 400
E157302
The S&P MidCap 400 is a stock market index that tracks the performance of mid-sized publicly traded companies in the United States.
All labels observed (11)
How this entity was disambiguated
This entity first appeared as the object of triple T1381063 — 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: S&P MidCap 400 Context triple: [S&P Dow Jones Indices, product, S&P MidCap 400]
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A.
S&P Composite 1500
The S&P Composite 1500 is a broad U.S. stock market index that combines the large-cap S&P 500, mid-cap S&P 400, and small-cap S&P 600 to represent about 90% of U.S. equity market capitalization.
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B.
S&P 100
The S&P 100 is a stock market index comprising 100 of the largest and most established blue-chip companies listed in the United States, often used as a benchmark for large-cap U.S. equities.
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C.
Russell 1000 Index
The Russell 1000 Index is a U.S. stock market index that tracks the performance of the 1,000 largest publicly traded companies, representing the large-cap segment of the American equity market.
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D.
NASDAQ-100 Index
The NASDAQ-100 Index is a stock market index comprising 100 of the largest non-financial companies listed on the Nasdaq Stock Market, heavily weighted toward the technology sector.
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E.
S&P 500 Index
The S&P 500 Index is a major U.S. stock market benchmark that tracks the performance of 500 large publicly traded companies listed on American exchanges.
- 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: S&P MidCap 400 Target entity description: The S&P MidCap 400 is a stock market index that tracks the performance of mid-sized publicly traded companies in the United States.
-
A.
S&P Composite 1500
The S&P Composite 1500 is a broad U.S. stock market index that combines the large-cap S&P 500, mid-cap S&P 400, and small-cap S&P 600 to represent about 90% of U.S. equity market capitalization.
-
B.
S&P 100
The S&P 100 is a stock market index comprising 100 of the largest and most established blue-chip companies listed in the United States, often used as a benchmark for large-cap U.S. equities.
-
C.
Russell 1000 Index
The Russell 1000 Index is a U.S. stock market index that tracks the performance of the 1,000 largest publicly traded companies, representing the large-cap segment of the American equity market.
-
D.
NASDAQ-100 Index
The NASDAQ-100 Index is a stock market index comprising 100 of the largest non-financial companies listed on the Nasdaq Stock Market, heavily weighted toward the technology sector.
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E.
S&P 500 Index
The S&P 500 Index is a major U.S. stock market benchmark that tracks the performance of 500 large publicly traded companies listed on American exchanges.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
equity index
ⓘ
mid-cap index ⓘ stock market index ⓘ |
| baseDate | 1991-06-19 ⓘ |
| baseValue | 100 ⓘ |
| calculationFrequency | real-time ⓘ |
| calculationMethod | float-adjusted market cap weighted average ⓘ |
| componentOf | S&P Composite 1500 ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| currency | US dollar ⓘ |
| dataVendor | Yahoo Finance ⓘ |
| dataVendorCode | ^MID ⓘ |
| focus | mid-sized publicly traded companies ⓘ |
| geographicScope | domestic U.S. companies ⓘ |
| governedBy |
S&P U.S. Indices Methodology
ⓘ
linked to:
S&P U.S. Indices
|
| hasCategory | mid-capitalization stocks ⓘ |
| hasISIN | US78355W1045 ⓘ |
| hasVariant |
S&P MidCap 400 Net Total Return Index
ⓘ
linked to:
S&P MidCap 400
S&P MidCap 400 Total Return Index ⓘ
linked to:
S&P MidCap 400
|
| inceptionDate | 1991-06-19 ⓘ |
| includesDividends | price index does not include dividends ⓘ |
| includesSecurityTypes |
REITs
ⓘ
common stocks ⓘ |
| indexFamily |
S&P Composite 1500
ⓘ
S&P U.S. indices ⓘ
linked to:
S&P U.S. Indices
|
| isBenchmarkFor |
U.S. mid-cap equity ETFs
ⓘ
U.S. mid-cap equity mutual funds ⓘ |
| launchDate | 1991-06-19 ⓘ |
| maintainedBy | S&P Dow Jones Indices ⓘ |
| marketCoverage | mid-cap U.S. equities ⓘ |
| numberOfConstituents | 400 ⓘ |
| operator | S&P Dow Jones Indices ⓘ |
| ownedBy | S&P Global ⓘ |
| publisher | S&P Dow Jones Indices ⓘ |
| regionCovered |
United States
ⓘ
linked to:
United States of America
|
| relatedIndex |
S&P 1500
ⓘ
linked to:
S&P Composite 1500
S&P 500 ⓘ
linked to:
S&P 500 Index
S&P SmallCap 600 ⓘ |
| sectorClassificationStandard | GICS ⓘ |
| selectionCriteria |
financial viability
ⓘ
liquidity ⓘ market capitalization ⓘ public float ⓘ |
| tickerSymbol | MID ⓘ |
| typicalUse |
benchmark for U.S. mid-cap stocks
ⓘ
underlying index for ETFs ⓘ underlying index for index funds ⓘ |
| weightingMethod | float-adjusted market capitalization weighting ⓘ |
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: S&P MidCap 400 Description of subject: The S&P MidCap 400 is a stock market index that tracks the performance of mid-sized publicly traded companies in the United States.
Referenced by (25)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: S&P MidCap 400
linked to: S&P MidCap 400
linked to: S&P MidCap 400
linked to: S&P MidCap 400
linked to: S&P MidCap 400
linked to: S&P MidCap 400
linked to: S&P MidCap 400
linked to: S&P MidCap 400
linked to: S&P MidCap 400
linked to: S&P MidCap 400
linked to: S&P MidCap 400
ACM
→
associatedIndexMembership
→
S&P 400 (historical/approximate; mid-cap index membership has varied)
ⓘ
linked to: S&P MidCap 400
subject linked to:
AL
linked to: S&P MidCap 400