AMEX
E440062
AMEX is a major U.S. stock exchange known historically for trading small-cap stocks, options, and exchange-traded funds.
All labels observed (1)
| Label | Occurrences |
|---|---|
| AMEX canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T4431329 — 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: AMEX Context triple: [American Stock Exchange, abbreviation, AMEX]
-
A.
American Express
American Express is a global financial services company best known for its charge and credit cards, payment network, and travel-related services.
-
B.
American Express Green Card
The American Express Green Card is a travel-focused charge card that earns Membership Rewards points and offers benefits like travel protections and statement credits for frequent travelers.
-
C.
Discover Card
Discover Card is a major U.S. credit card brand known for its cash-back rewards, no annual fees on many cards, and widespread acceptance.
-
D.
Mastercard
Mastercard is a global financial services corporation best known for its widely used credit and debit card payment network.
-
E.
Visa
Visa is a global financial services corporation best known for operating one of the world’s largest electronic payment networks for credit, debit, and prepaid cards.
- 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: AMEX Target entity description: AMEX is a major U.S. stock exchange known historically for trading small-cap stocks, options, and exchange-traded funds.
-
A.
American Express
American Express is a global financial services company best known for its charge and credit cards, payment network, and travel-related services.
-
B.
American Express Green Card
The American Express Green Card is a travel-focused charge card that earns Membership Rewards points and offers benefits like travel protections and statement credits for frequent travelers.
-
C.
Discover Card
Discover Card is a major U.S. credit card brand known for its cash-back rewards, no annual fees on many cards, and widespread acceptance.
-
D.
Mastercard
Mastercard is a global financial services corporation best known for its widely used credit and debit card payment network.
-
E.
Visa
Visa is a global financial services corporation best known for operating one of the world’s largest electronic payment networks for credit, debit, and prepaid cards.
- F. None of above. chosen
Statements (39)
| Predicate | Object |
|---|---|
| instanceOf |
financial market infrastructure
ⓘ
stock exchange ⓘ |
| acquiredBy |
NYSE Euronext
ⓘ
linked to:
Euronext
|
| acquisitionYear | 2008 ⓘ |
| alsoKnownAs |
AMEX
ⓘ
Amex Stock Exchange ⓘ
linked to:
American Stock Exchange
|
| country | United States of America ⓘ |
| currency |
United States dollar
ⓘ
linked to:
US dollar
|
| formerBuildingUse | trading floor ⓘ |
| formerNameOf | NYSE American ⓘ |
| fullName | American Stock Exchange ⓘ |
| governingLaw | U.S. federal securities law ⓘ |
| headquartersAddressCity | New York City ⓘ |
| headquartersAddressCountry | United States of America ⓘ |
| historicalFocus |
exchange-traded funds
ⓘ
options ⓘ small-cap stocks ⓘ |
| industry |
capital markets
ⓘ
financial services ⓘ |
| listingCategory |
mid-cap companies
ⓘ
small-cap companies ⓘ |
| locatedIn |
New York City
ⓘ
New York State ⓘ United States of America ⓘ |
| marketSegment |
derivative securities
ⓘ
equity securities ⓘ |
| marketType | secondary market ⓘ |
| notableRole |
early venue for ETF trading in the United States
ⓘ
major U.S. options exchange ⓘ |
| operatedAs | auction market ⓘ |
| regionServed | United States of America ⓘ |
| regulator |
U.S. Securities and Exchange Commission
ⓘ
linked to:
Securities and Exchange Commission
|
| shortName | AMEX ⓘ |
| status | defunct as an independent exchange ⓘ |
| successor | NYSE American ⓘ |
| timeZone | Eastern Time Zone ⓘ |
| tradedInstrument |
equities
ⓘ
exchange-traded funds ⓘ options ⓘ |
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: AMEX Description of subject: AMEX is a major U.S. stock exchange known historically for trading small-cap stocks, options, and exchange-traded funds.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.