American Stock Exchange
E95336
The American Stock Exchange was a major U.S. securities exchange known for trading stocks, options, and exchange-traded funds, particularly of smaller and mid-sized companies, before being acquired and rebranded by the New York Stock Exchange.
All labels observed (3)
| Label | Occurrences |
|---|---|
| American Stock Exchange canonical | 10 |
| American Stock Exchange (AMEX) | 2 |
| Amex Stock Exchange | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T723740 — 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: American Stock Exchange Context triple: [NYSE American, formerName, American Stock Exchange]
-
A.
New York Stock Exchange
The New York Stock Exchange is the world’s largest and one of its oldest stock exchanges, serving as a central hub for global equity trading and financial markets.
-
B.
Xetra
Xetra is an electronic trading system operated by Deutsche Börse that serves as the primary platform for trading German and other European securities.
-
C.
NASDAQ
NASDAQ is a major American electronic stock exchange known for listing many of the world’s leading technology and growth companies.
-
D.
National Association of Securities Dealers
The National Association of Securities Dealers (NASD) was a self-regulatory organization that oversaw U.S. broker-dealers and securities markets before its regulatory functions were consolidated into the Financial Industry Regulatory Authority (FINRA).
-
E.
Chicago Stock Exchange
The Chicago Stock Exchange is a regional securities exchange in the United States that facilitates the trading of stocks and other financial instruments.
- 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: American Stock Exchange Target entity description: The American Stock Exchange was a major U.S. securities exchange known for trading stocks, options, and exchange-traded funds, particularly of smaller and mid-sized companies, before being acquired and rebranded by the New York Stock Exchange.
-
A.
New York Stock Exchange
The New York Stock Exchange is the world’s largest and one of its oldest stock exchanges, serving as a central hub for global equity trading and financial markets.
-
B.
Xetra
Xetra is an electronic trading system operated by Deutsche Börse that serves as the primary platform for trading German and other European securities.
-
C.
NASDAQ
NASDAQ is a major American electronic stock exchange known for listing many of the world’s leading technology and growth companies.
-
D.
National Association of Securities Dealers
The National Association of Securities Dealers (NASD) was a self-regulatory organization that oversaw U.S. broker-dealers and securities markets before its regulatory functions were consolidated into the Financial Industry Regulatory Authority (FINRA).
-
E.
Chicago Stock Exchange
The Chicago Stock Exchange is a regional securities exchange in the United States that facilitates the trading of stocks and other financial instruments.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
financial market
ⓘ
stock exchange ⓘ |
| abbreviation | AMEX ⓘ |
| acquiredBy |
NYSE Euronext
ⓘ
linked to:
Euronext
New York Stock Exchange ⓘ |
| acquisitionYear | 2008 ⓘ |
| alsoKnownAs | AMEX ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| currency |
United States dollar
ⓘ
linked to:
US dollar
|
| focus |
mid-cap companies
ⓘ
small-cap companies ⓘ |
| formerName |
New York Curb Exchange
ⓘ
New York Curb Market ⓘ
linked to:
New York Curb Exchange
|
| governedBy | self-regulatory organization rules ⓘ |
| headquartersAddress | 86 Trinity Place, New York City ⓘ |
| historicalSignificance | one of the major U.S. stock exchanges of the 20th century ⓘ |
| industry |
financial services
ⓘ
securities exchange ⓘ |
| language | English ⓘ |
| listedSecurityType |
ETF shares
ⓘ
common stock ⓘ equity options ⓘ index options ⓘ preferred stock ⓘ warrants ⓘ |
| locatedIn |
Manhattan
ⓘ
New York ⓘ New York City ⓘ |
| marketType | auction market ⓘ |
| notableFor |
floor-based open outcry trading
ⓘ
listing smaller and emerging companies ⓘ |
| operatedAs | national securities exchange in the United States ⓘ |
| rebrandedAs |
NYSE Alternext U.S.
ⓘ
NYSE Amex Equities ⓘ
linked to:
NYSE Arca
|
| regionServed |
North America
ⓘ
United States ⓘ
linked to:
United States of America
|
| regulator |
U.S. Securities and Exchange Commission
ⓘ
linked to:
Securities and Exchange Commission
|
| specialization |
ETF trading
ⓘ
derivatives trading ⓘ options trading ⓘ |
| status | defunct as an independent exchange ⓘ |
| successor | NYSE American ⓘ |
| tradedInstrument |
exchange-traded funds
ⓘ
options ⓘ stocks ⓘ |
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: American Stock Exchange Description of subject: The American Stock Exchange was a major U.S. securities exchange known for trading stocks, options, and exchange-traded funds, particularly of smaller and mid-sized companies, before being acquired and rebranded by the New York Stock Exchange.
Referenced by (13)
Full triples — surface form annotated when it differs from this entity's canonical label.