Jeff and Janine Yass founded the Yass Prize for Sustainable, Transformational, Outstanding, and Permissionless (STOP) education, which was launched during the COVID-19 pandemic.

Nov 5, 2025 · Yass, co-founder of the Pennsylvania-based trading firm Susquehanna International Group, has become a significant force in Texas politics.

Jeff Yass, Pennsylvania’s richest man and one of the 100 richest people in the world, has spent years trying to rig the rules of Pennsylvania’s democracy by funding politicians who will do his bidding.

3 days ago · Jeff Yass is a cofounder of Susquehanna International Group, one of Wall Street's largest and most successful trading firms. He went to SUNY Binghamton, became a pro gambler, then …

Mar 12, 2024 · Jeff Yass is not your average billionaire who wants something out of Washington. During the 2022 midterm elections, Yass donated $47 million to help Republican candidates and …

Last March, Jeff Yass resigned himself to Donald Trump being the Republican candidate for president and went all-in.

YASS meaning: 1. a way of saying or writing "yes", used especially to show that you are very pleased or excited…. Learn more.

Jan 9, 2026 · Design and development firm Haldon House is working with Yass and his wife, Janine, on redeveloping a half-dozen properties in Gladwyne with historic architecture, green spaces, and new …

Nov 1, 2025 · Yass is the sole director and principal of Philadelphia Trading Inc., according to Florida corporate filings.

Aug 15, 2025 · Jeff Yass, a Haverford entrepreneur and co-founder of Susquehanna International Group, with a net worth of $59 billion, is the richest man in Pennsylvania, according to Forbes, writes …