Thomas Peterffy
American businessman
Source: Wikidata — retrieved 8/30/2026 (wikidata)
Profile Summary
Thomas Peterffy is an American businessman in finance, born in 1944 and based in Florida. He has an estimated net worth of ~$17.1 billion Wikidata. SEC records link him to Interactive Brokers Group, IBG Holdings, TradeStation Group, Newsmax, and UP Fintech Holding SEC EDGAR.
Business & SEC Activity
SEC records list 258 filings associated with Peterffy, including 257 insider filings SEC EDGAR. The records include Form 3, which reports an insider’s initial ownership, and Form 4, which reports changes in ownership; recent filings include both forms involving Interactive Brokers Group SEC EDGAR.
Philanthropy
The Peterffy Foundation reported $110.98 million in total assets, $13.83 million in revenue, and $8.39 million in expenses for tax year 2023 ProPublica 990. It paid $8.13 million in grants during that year ProPublica 990.
Political Activity
The available FEC data contains at least 100 federal contributions; the figures below cover only the most recent 100 records in the sample, not his full history FEC. Those sampled records total $1,538,250, including $427,300 categorized as Republican and $1,110,950 categorized as PAC/Other; the largest listed recipients were Keystone Renewal PAC at $500,000 and Emmer Majority Builders at $488,100 FEC.
In the News
A June 5, 2026 article reported that Interactive Brokers Chair Thomas Peterffy said prediction markets could be the next major development in trading NewsAPI.
U.S. Presence
Philanthropy
Foundations are matched to a person by name, not by trustee records — so a same-surname family foundation can land here in error. Every entity below links to its full IRS filing; if one doesn’t belong, tell us at hello@skylarkcreations.com and we’ll pull it.
Political Contributions
These figures cover the 100 most recent federal contributions on file, not the full record. The total, party split, top recipients and dates below are all computed over that sample, so each is a floor rather than a complete figure.
By Party (in the sample)
Top Recipients (in the sample)
Matched to this person by contributor name as filed with the FEC. Contributions filed under the same name by someone else can appear here; we do not yet corroborate against employer or state.
SEC Filings
Associated Companies
Entities appearing alongside this person in SEC full-text search — an association, not necessarily ownership or control. Follow each link to the primary SEC record to judge for yourself.
Recent Insider Filings
Score Breakdown
The PBS is a weighted average of 2 components. The formula is open and versioned — the weight percentages below show how much each component contributes to the final score.
Evidenced charitable giving — built on what they actually give each year, not parked assets. Dominated by generosity (annual giving relative to net worth — the share of your fortune you give), plus the absolute scale of that giving, plus a small nudge for signing the Giving Pledge (a commitment, not a realized action).
Data: ProPublica 990 charitable disbursements, net worth, The Giving Pledge registry
How much sourced, public accountability data exists — net worth, political contributions, SEC filings, foundation 990s, news coverage, and a verified profile. More public disclosure scores higher.
Data: FEC, SEC EDGAR, ProPublica 990s, GDELT / NewsAPI, Wikidata
Formula (v2): PBS = 65% x Philanthropy + 35% x Transparency
Scored on 8/31/2026 on a 0–100 scale. The score uses only the signals we have populated data for. Goal Impact, Controversy, and Community Approval are deferred until that data exists — Phase 1 goal adoption, controversy detection, and community votes respectively.
All data is sourced from public records. Each section links to its original source. View on Wikidata