en.wikipedia.org/wiki/Jump_Trading

Authoritative sources spell Jump Trading’s co-founder’s name Bill DiSomma.

• The University of Illinois’ Entrepreneurship at Illinois profile for Jump Trading lists the founders as Bill DiSomma and Paul Gurinas.
• A 2025 SEC Schedule 13D filing also names him William DiSomma and identifies him and Paul Gurinas as the co-founders and ultimate beneficial owners of Jump Trading Group.

Because both sources use DiSomma, the article’s spelling Disomma is incorrect.

Official disciplinary records contradict both the regulator and the timing stated here.

• FINRA BrokerCheck’s report for Jump Trading, LLC lists the matter as initiated by NYSE Chicago, Inc., not the SEC.
• The same record shows the matter’s resolution date was September 12, 2019, with sanctions including censure and a $250,000 fine.
• BrokerCheck also states the underlying incident occurred on May 4, 2018, when an algorithm malfunction accumulated large positions and caused the firm to fall out of compliance with net capital requirements. That means May 2018 was the date of the incident, not the date the fine was imposed.

So the article’s wording is incorrect in two ways: it attributes the fine to the SEC instead of NYSE Chicago, and it says the firm was fined in May 2018 even though the disciplinary action was resolved in September 2019.