William A. Porter
E407266
William A. Porter was an American businessman and technology pioneer best known as the co-founder of the online brokerage firm E-Trade.
All labels observed (1)
| Label | Occurrences |
|---|---|
| William A. Porter canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T3805243 — 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: William A. Porter Context triple: [E-Trade, foundedBy, William A. Porter]
-
A.
Lyman J. Gage
Lyman J. Gage was an American banker and politician who served as U.S. Secretary of the Treasury under Presidents William McKinley and Theodore Roosevelt.
-
B.
Josiah Parsons Cooke
Josiah Parsons Cooke was a 19th-century American chemist and Harvard professor known for his influential work in chemical education and atomic theory.
-
C.
James H. White
James H. White was an early American film director and producer associated with the pioneering motion picture work of the Edison Manufacturing Company.
-
D.
Samuel L. M. Barlow
Samuel L. M. Barlow is a notable individual who shares the surname Barlow and is recognized as a distinguished bearer of that name.
-
E.
Charles F. Brannan
Charles F. Brannan was a mid-20th-century U.S. Secretary of Agriculture known for advocating progressive farm policies and New Deal–style agricultural reforms.
- 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: William A. Porter Target entity description: William A. Porter was an American businessman and technology pioneer best known as the co-founder of the online brokerage firm E-Trade.
-
A.
Lyman J. Gage
Lyman J. Gage was an American banker and politician who served as U.S. Secretary of the Treasury under Presidents William McKinley and Theodore Roosevelt.
-
B.
Josiah Parsons Cooke
Josiah Parsons Cooke was a 19th-century American chemist and Harvard professor known for his influential work in chemical education and atomic theory.
-
C.
James H. White
James H. White was an early American film director and producer associated with the pioneering motion picture work of the Edison Manufacturing Company.
-
D.
Samuel L. M. Barlow
Samuel L. M. Barlow is a notable individual who shares the surname Barlow and is recognized as a distinguished bearer of that name.
-
E.
Charles F. Brannan
Charles F. Brannan was a mid-20th-century U.S. Secretary of Agriculture known for advocating progressive farm policies and New Deal–style agricultural reforms.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
businessperson
ⓘ
entrepreneur ⓘ human ⓘ technology pioneer ⓘ |
| awardReceived | Ernst & Young Entrepreneur of the Year Award ⓘ |
| basedIn | Silicon Valley ⓘ |
| causeOfDeath | natural causes ⓘ |
| coFounded | E-Trade ⓘ |
| coFounder | William A. Porter ⓘ |
| countryOfCitizenship | United States of America ⓘ |
| dateOfBirth | 1928-11-24 ⓘ |
| dateOfDeath | 2015-07-01 ⓘ |
| educatedAt |
Kansas State University
ⓘ
Massachusetts Institute of Technology ⓘ University of California, Berkeley ⓘ |
| employer | E-Trade ⓘ |
| ethnicGroup | White American ⓘ |
| fieldOfWork |
electronic trading
ⓘ
financial technology ⓘ online financial services ⓘ |
| founded |
Trade*Plus (precursor to E-Trade)
ⓘ
linked to:
E-Trade
|
| genreOfActivity |
online trading
ⓘ
securities brokerage ⓘ |
| hasAcademicDegree |
MBA
ⓘ
degree in electrical engineering ⓘ |
| hasChild | four children ⓘ |
| hasRole | innovator in electronic brokerage ⓘ |
| industry |
financial services
ⓘ
technology ⓘ |
| influenced | widespread adoption of online stock trading ⓘ |
| knownFor | co-founding E-Trade ⓘ |
| languageSpoken | English ⓘ |
| militaryService | United States Army ⓘ |
| notableAchievement | helping to create one of the first online discount brokerages ⓘ |
| notableIdea | using personal computers and networks for retail securities trading ⓘ |
| notableWork | development of online brokerage trading systems ⓘ |
| occupation |
businessman
ⓘ
electrical engineer ⓘ entrepreneur ⓘ |
| placeOfBirth |
Lafayette, Indiana, United States of America
ⓘ
linked to:
Lafayette, Indiana
|
| placeOfDeath |
Portola Valley, California, United States of America
ⓘ
linked to:
Portola Valley, California
|
| positionHeld |
chairman of E-Trade
ⓘ
chief executive officer of E-Trade ⓘ |
| residence |
Portola Valley, California, United States of America
ⓘ
linked to:
Portola Valley, California
|
| sexOrGender | male ⓘ |
| spouse | Joan Porter ⓘ |
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: William A. Porter Description of subject: William A. Porter was an American businessman and technology pioneer best known as the co-founder of the online brokerage firm E-Trade.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.