Thomas Secunda Net Worth

Thomas Secunda has an estimated net worth of $5.2 billion, according to Forbes Real-Time Billionaires, Thomas Secunda profile (figures as of October 20, 2026). That is up from $2.8 billion in 2019.

Thomas Secunda is an American businessman best known as a cofounder of Bloomberg LP and its vice chairman. He started out as a programmer, then worked as a fixed-income trader at Morgan Stanley and a systems researcher at Salomon Brothers. At Salomon Brothers, he met Michael Bloomberg. That connection helped lead to the company they later built together, which became one of the best-known names in financial information and media.

In 1982, Secunda joined Michael Bloomberg, Duncan MacMillan, and Charles Zegar to start Innovative Market Systems, the company later renamed Bloomberg L.P. in 1987. He helped create many of Bloomberg’s financial products, especially the terminal business. That product became the company’s main engine. He still serves as vice chairman and holds a 4% stake. Forbes put his net worth at $5.2 billion on its real-time tracker on October 20, 2026.

How Thomas Secunda built his wealth

Secunda’s fortune is tied to Bloomberg LP, the financial information and media company he helped start. Before that, he worked in finance and technology roles, including fixed-income trading at Morgan Stanley and systems research at Salomon Brothers. His background in mathematics and programming fit well with Bloomberg’s early mission. From the start, his work centered on building tools that financial professionals would use every day.

A big part of his wealth comes from helping shape Bloomberg’s products, especially the terminal business. Bloomberg says he built many of the company’s financial products, with the terminal operation standing out as its most lucrative business. He still serves as vice chairman and owns a 4% stake in the company. Bloomberg also estimates the company generates nearly $15 billion in revenue, with terminals accounting for an estimated two-thirds of that total.

How the Forbes estimate changed

Forbes has steadily raised its estimate of Secunda’s fortune over the years. It listed him at $2.8 billion in 2019, then $3 billion in 2020 and $3.5 billion in 2021. The estimate moved up again to $4.1 billion in 2022 and $4.7 billion in 2023. Those gains track the value of his stake in Bloomberg LP, where the terminal business remains a core source of the company’s revenue.

The upward trend continued when Forbes estimated $5.4 billion in 2024 and again in 2025, then $5.7 billion in 2026 on its annual billionaires list. Later, Forbes' real-time tracker showed $5.2 billion in October 2026. Secunda’s money story is still closely linked to Bloomberg LP itself, where he remains vice chairman. Beyond business, Forbes notes that he also helped spearhead recovery efforts in the U.S. Virgin Islands after the 2017 hurricanes.