 I'm Chad Robinson with Your Money Now. Citadel Securities founder Ken Griffin was the recipient of a rare public apology from the U.S. Internal Revenue Service after his tax records were leaked. ProPublica in 2021 published details of tax records of Griffin and other billionaires, including former President Trump. Griffin on Monday dropped a lawsuit against the IRS. The contractor found to be at fault was sentenced this year and is appealing his five-year sentence.