Tom Sosnoff
Angel investor in Chicago
Chicago, Illinois
Tom Sosnoff, Angel investor in Chicago is an active investor based in Chicago, Illinois. This profile covers what Tom Sosnoff backs, at which stage, and how founders can reach out in 2026.
Mr. Tom Sosnoff is a Co-Founder of tastytrade. Mr. Sosnoff served as Board Member at Zero Hash. He is an Angel Investor. Tom Sosnoff, a former trader, became one of Chicago's well-known serial entrepreneurs in financial technology by building a breakthrough options-trading platform, which was later sold for $750 million. He then launched tastytrade, the fastest growing online financial network which produces eight hours of educational and other video programming for traders of all experience levels. Tom is a recognized online brokerage innovator and sought-after financial educator. Tom founded thinkorswim in 1999, and tastytrade in 2011. He is Co-CEO of tastytrade alongside Kristi Ross. He served as Board Member at Dough. Leveraging over 20 years of experience as a market maker for the Chicago Board Options Exchange (CBOE) and one of the original OEX traders in the S&P 100 Index pit, Tom pursued a vision to educate retail investors in options trading and to build a superior software platform and a brokerage firm that specialized in options. Keeping this vision in mind, tastytrade's affiliate, tastyworks, was launched in 2017. With Scott Sheridan as CEO of tastyworks, Tom continues to drive innovation and know-how to the do-it-yourself investor as co-host of tastytrade Live. He holds a BA (Bachelor of Arts) in Political Science from State University of New York (SUNY).
- Investor type
- Angel
- Stages
- Early Stage VentureSeedLate Stage Venture
- Location
- Chicago, Illinois
- Typical check
- $500K
- Past investments
- 2
Notable investments
How to reach Tom Sosnoff
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Round Funded. "Tom Sosnoff." Round Funded investor database, updated September 8, 2026.
Stable URL, it will not change: https://www.roundfunded.com/en/investor/tom-sosnoff-161731-0
Frequently Asked Questions
Who is Tom Sosnoff?
Tom Sosnoff is an active investor, Angel investor in Chicago. Round Funded tracks their focus and activity alongside thousands of investors.
What stage does Tom Sosnoff invest at?
Tom Sosnoff typically invests at Early Stage Venture, Seed and Late Stage Venture. Lead with traction that fits the stage when you reach out.
What is Tom Sosnoff's typical check size?
Tom Sosnoff typically writes checks around $500K. Use it as a signal for whether your raise fits their stage.
How do founders reach investors like this?
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What is Round Funded?
Round Funded is an investor database and outreach platform for startup founders. It lists 60,000+ active investors with verified contacts, filtered to recent investment activity, and lets founders send personalized pitches from their own Gmail, track replies, and share a free Data Room. Round+ starts at $99 per month with a 3-day trial.