TD Ameritrade (historical headquarters)
E49923
TD Ameritrade (historical headquarters) refers to the former main corporate offices of the online brokerage firm TD Ameritrade, which was based in Omaha, Nebraska before its acquisition by Charles Schwab.
All labels observed (3)
| Label | Occurrences |
|---|---|
| TD Ameritrade | 1 |
| TD Ameritrade (historical headquarters) canonical | 1 |
| TD Ameritrade corporate campus (historical) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T392632 — 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: TD Ameritrade (historical headquarters) Context triple: [Omaha, Nebraska, homeTo, TD Ameritrade (historical headquarters)]
-
A.
State Street Pavilion
The State Street Pavilion is a premium seating and hospitality area at Fenway Park offering elevated views of the field along with upscale amenities for Boston Red Sox fans.
-
B.
Salesforce Tower vicinity
Salesforce Tower vicinity is the bustling area surrounding San Francisco’s tallest skyscraper, characterized by dense office towers, transit connections, and the commercial core of the Financial District.
-
C.
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.
-
D.
Chicago Board of Trade
The Chicago Board of Trade is one of the world’s oldest and most influential futures and options exchanges, serving as a major hub for trading agricultural and financial derivatives.
-
E.
New York Stock Exchange Building
The New York Stock Exchange Building is a historic neoclassical landmark in New York City that houses the world’s largest stock exchange by market capitalization.
- 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: TD Ameritrade (historical headquarters) Target entity description: TD Ameritrade (historical headquarters) refers to the former main corporate offices of the online brokerage firm TD Ameritrade, which was based in Omaha, Nebraska before its acquisition by Charles Schwab.
-
A.
State Street Pavilion
The State Street Pavilion is a premium seating and hospitality area at Fenway Park offering elevated views of the field along with upscale amenities for Boston Red Sox fans.
-
B.
Salesforce Tower vicinity
Salesforce Tower vicinity is the bustling area surrounding San Francisco’s tallest skyscraper, characterized by dense office towers, transit connections, and the commercial core of the Financial District.
-
C.
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.
-
D.
Chicago Board of Trade
The Chicago Board of Trade is one of the world’s oldest and most influential futures and options exchanges, serving as a major hub for trading agricultural and financial derivatives.
-
E.
New York Stock Exchange Building
The New York Stock Exchange Building is a historic neoclassical landmark in New York City that houses the world’s largest stock exchange by market capitalization.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
corporate headquarters
ⓘ
office building complex ⓘ |
| associatedCompany | TD Ameritrade ⓘ |
| associatedIndustry |
financial services
ⓘ
online brokerage ⓘ |
| associatedWithEvent | acquisition of TD Ameritrade by Charles Schwab ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| function |
administrative center
ⓘ
main corporate offices ⓘ operations center ⓘ |
| historicalRole | primary headquarters of TD Ameritrade prior to its acquisition by Charles Schwab ⓘ |
| locatedIn |
Douglas County, Nebraska
ⓘ
Nebraska ⓘ Omaha, Nebraska ⓘ |
| locatedInTime | before acquisition of TD Ameritrade by Charles Schwab ⓘ |
| occupant | TD Ameritrade ⓘ |
| ownedBy | TD Ameritrade ⓘ |
| partOf |
TD Ameritrade corporate campus (historical)
ⓘ
linked to:
TD Ameritrade (historical headquarters)
|
| predecessorOf | TD Ameritrade offices integrated into Charles Schwab corporate locations ⓘ |
| statusAfterAcquisition | former main corporate headquarters of TD Ameritrade ⓘ |
| usedBy | TD Ameritrade ⓘ |
| usedFor |
client service operations
ⓘ
corporate management ⓘ executive offices ⓘ technology and trading infrastructure support ⓘ |
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: TD Ameritrade (historical headquarters) Description of subject: TD Ameritrade (historical headquarters) refers to the former main corporate offices of the online brokerage firm TD Ameritrade, which was based in Omaha, Nebraska before its acquisition by Charles Schwab.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: TD Ameritrade (historical headquarters)
linked to: TD Ameritrade (historical headquarters)