# John J. Phelan, Jr.

> John Joseph Phelan Jr. was an American financier who served as president and later chairman and chief executive of the New York Stock Exchange, where he introduced computerized trading technology. Phelan's leadership tenure at the NYSE included the 1987 stock market crash, during which he declined to halt trading. Phelan's calm and confident manner was widely praised. After the crash, Phelan helped to implement trading curbs also known as "circuit breakers" to help prevent rapid stock selloffs in the future.

*American financier (1931-2012)*

**Canonical URL:** https://fame.am/person/john-j-phelan-jr

## Identity
- **Profile type:** Investor ([Wikidata](https://www.wikidata.org/entity/Q131524))
- **Category:** Investors
- **Country:** United States
- **Born:** 1931-05-07
- **Died:** 2012-08-04
- **Status:** deceased
- **Gender:** male

## Bio

John Joseph Phelan Jr. was an American financier who served as president and later chairman and chief executive of the New York Stock Exchange, where he introduced computerized trading technology. Phelan's leadership tenure at the NYSE included the 1987 stock market crash, during which he declined to halt trading. Phelan's calm and confident manner was widely praised. After the crash, Phelan helped to implement trading curbs also known as "circuit breakers" to help prevent rapid stock selloffs in the future.

## Fame
- **Popularity score:** 34.6 / 100
- **Momentum:** 0.0 / 100  (trend: FALLING)
- **Historical depth:** 2.4 / 100
- **Attention shift:** 0.0 / 100
- **Source confidence:** 15.0 / 100
- **Profile completeness:** 66.0 / 100

## Sources
- [John J. Phelan Jr.](https://en.wikipedia.org/wiki/John_J._Phelan_Jr.)
- [约翰·范尔霖](https://zh.wikipedia.org/wiki/%E7%BA%A6%E7%BF%B0%C2%B7%E8%8C%83%E5%B0%94%E9%9C%96)
- [Wikidata](https://www.wikidata.org/wiki/Q6241253)

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