Ken Griffin Subpoenas ProPublica Over Secret Tax Returns Leak

Hedge fund billionaire Ken Griffin has subpoenaed ProPublica and five of its journalists for documents related to the publicationof reports that detailed his secret tax return information.

The Citadel founder requested the information last month as part of his lawsuit against the Internal Revenue Service, according to a filing Tuesday in federal court in Miami. Griffin claims in the suit that the IRS failed to establish “appropriate administrative, technical, and/or physical safeguards” to protect his private data.

ProPublica published tax information last year about many of the wealthiest US taxpayers, including Griffin. It reported he had an ...