Kenneth C. Griffin

Kenneth C. Griffin (born 1968) is an American billionaire hedge fund manager with an estimated net worth of ~$22.7B. Wikidata SEC EDGAR lists him under the name “GRIFFIN KENNETH C” with a personal CIK and extensive insider-ownership filings. SEC EDGAR

Business & SEC Activity

SEC EDGAR shows 136 insider filings associated with Kenneth C. Griffin, including Forms 3 and 4 (and a 4/A amendment). SEC EDGAR Form 3 is an initial statement of beneficial ownership, Form 4 reports subsequent changes in ownership, and Form 4/A amends a prior Form 4. SEC EDGAR The filings connect him to entities including Citadel GP LLC, Citadel Securities LLC, Citadel Advisors LLC, and Surveyor Capital Ltd. SEC EDGAR

Philanthropy

ProPublica 990 data lists multiple foundations with “Griffin” in the name reporting a combined $1,169,288 in total assets (tax year 2023 where available) and $0 in total grants paid. ProPublica 990 One “Griffin Foundation” (NC) reported $935,318 in assets, $36,769 in revenue, $82,237 in expenses, and $0 grants paid for 2023. ProPublica 990 The “Griffin Phoenix Foundation” (CA) reported $233,970 in assets, $17,521 in revenue, $18,610 in expenses, and $0 grants paid for 2023. ProPublica 990

Political Activity

FEC records show 100 contributions totaling $100,241,402.50 from 2023-05-11 to 2024-11-02. FEC The largest recipients listed include Senate Leadership Fund ($30,000,000), Congressional Leadership Fund ($17,000,000), Keystone Renewal PAC ($16,000,000), Maryland's Future ($10,000,000), and American Patriots PAC ($6,000,000). FEC The party breakdown reported is $1,502.50 to Democrats, $5,739,900 to Republicans, and $94,500,000 to PAC/Other. FEC

In the News

Recent headlines in the provided NewsAPI feed include articles from Harvard Gazette (2026-03-09 and 2026-03-04), Business Insider (2026-03-06), Washington Examiner (2026-02-27), and other outlets. NewsAPI