{"schema_version":"secwatch.filing_event.v1","accession":"0001381197-21-000029","form_type":"8-K","ticker":"IBKR","cik":"0001381197","company_name":"Interactive Brokers Group, Inc.","filed_at":"2021-07-30T23:59:59+00:00","discovered_at":"2026-05-14T18:04:17.896096+00:00","generated_at":"2026-06-30T00:18:35.881232+00:00","sec_items":["8.01","9.01"],"event_type":"other_material","sentiment":"neutral","materiality_score":0.2,"calibrated_materiality_score":0.2,"confidence":"high","headline":"Interactive Brokers completes takedown of 6.08M shares from shelf registration","bullets":["Takedown of 6,079,542 common shares from existing shelf Registration Statement on Form S-3.","Legal opinion of Dechert LLP on share validity filed as Exhibit 5.4 and incorporated by reference.","Registration Statement originally filed July 27, 2020; no material operational or financial update."],"urls":{"canonical":"https://secwatch.observer/filing/0001381197-21-000029","json":"https://secwatch.observer/filing/0001381197-21-000029.json","markdown":"https://secwatch.observer/filing/0001381197-21-000029.md","text":"https://secwatch.observer/filing/0001381197-21-000029.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1381197/000138119721000029/0001381197-21-000029-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1381197/000138119721000029/ibkr-20210730x8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-06-30T00:18:35.881232+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}