{"id":"clm_AF1F71BE38D5","entity":"interactive-brokers","predicate":"founded","value":"1977","value_json":{"note":"The company's history page opens in 1977, when Thomas Peterffy bought an AMEX seat and began trading. The page says he founded the company but does not state a founding date, so 1977 is the start of i","check":{"on":"2026-11-12","url":"https://www.interactivebrokers.com/en/general/about/info-and-history.php","pages":1,"quote":"Interactive Brokers History Equity Capital 1977 Thomas Peterffy (now Chairman of the Interactive Brokers (IBKR) Group) buys a seat on the American Stock Exchange (AMEX) and becomes a member, trading as an individual market maker in equity options.","outcome":"checked"},"verdict":"found","verified":"2026-11-11","precision":9,"missing_basic":true},"valid_from":"1977-01-01","valid_to":null,"published":null,"recorded":"2026-11-11","citation":{"plain":"AsOf. \"Interactive Brokers founded: 1977\", as of 1977-01-01. Claim clm_AF1F71BE38D5, https://asof.is/claim/clm_AF1F71BE38D5, accessed 2026-11-12. Source: https://www.interactivebrokers.com/en/general/about/info-and-history.php.","url":"https://asof.is/claim/clm_AF1F71BE38D5","accessed":"2026-11-12"},"confidence":0.95,"status":"valid","assertable":true,"superseded_by":null,"supersedes":[],"first_seen_at":"2026-11-11T21:37:57.324162+00:00","updated_at":"2026-11-12T10:07:14.124762+00:00","sources":[{"url":"https://www.interactivebrokers.com/en/general/about/info-and-history.php","tier":"primary","publisher":"interactivebrokers.com","published_at":null}],"evidence":{"by":"page-read","on":"2026-11-12","quote":"Interactive Brokers History Equity Capital 1977 Thomas Peterffy (now Chairman of the Interactive Brokers (IBKR) Group) buys a seat on the American Stock Exchange (AMEX) and becomes a member, trading as an individual market maker in equity options.","url":"https://www.interactivebrokers.com/en/general/about/info-and-history.php"},"legend":{"dates":"valid_from: when the claim took effect (a period figure: the day its period closed). published: the earliest day a source on the record published it (a filing's filing date, a post's date; null when no source carries one). recorded: the day AsOf first held it. A figure can take effect weeks before it is published.","citation":"citation: how to cite the row (plain: one sentence with the value, its as-of date, the claim id and URL, the day answered and the primary source; url: the claim page; accessed: the day answered). APA and BibTeX forms are on the claim page.","why_not":{},"checked_by":{"page-read":"its source page states the value and the date"}}}