London's High Court upheld a worldwide freezing order against former executive Leonard Lancia in June 2026, enforcing a £6 million arbitration award to Citadel. The financial firm had secured the freezing order against Lancia in February 2026.

Citadel is seeking £6 million from Lancia, the former head of its European derivatives trading business. An arbitration proceeding in the London Court of International Arbitration in 2023 resulted in Citadel winning over £6 million from Lancia and two colleagues. This award includes £1.6 million in damages and £3.7 million in legal costs. Citadel had originally sought £150 million in the dispute.

Lancia exited Citadel in 2021 to co-found the crypto trading start-up Portofino Technologies with a former colleague. Citadel accused Lancia of developing his new business while still employed at the firm. Lancia and Portofino Technologies deny this allegation. In US court filings, Citadel also accused Portofino of attempting to raid Citadel Securities' employees and engaging in a scheme to steal trade secrets. Last month, Portofino claimed in a US court filing that Citadel failed to prove the misuse of any confidential information.

Lancia requested the High Court to lift the freezing order but the court rejected his request. He had offered shares to cover his payment to Citadel; however, the firm contends the valuation of these shares is speculative. James Ramsden KC, Citadel's barrister, stated, "Mr Lancia is an adjudicated liar with a history of asset dissipation and concealment of evidence." Ramsden added, "His apparent strategy – 'delay, don't pay' – should not be tolerated by the court." Lancia's lawyer stated that Lancia "strongly rejects Citadel's characterisation and the allegations of dissipation of assets." The lawyer also said, "Those allegations are contested in ongoing proceedings and should not be equated to findings of fact." The lawyer further commented, "Mr Lancia's position is that Citadel's current approach relating to reasonable settlement proposals is unfair, disproportionate and unjustified."

Why It Matters

This court decision upholds a financial judgment against a former executive of Citadel, one of the largest financial firms, which was founded by Ken Griffin in 1990 and whose sister hedge fund arm manages over $69 billion in assets. The legal battle involves disputes over non-compete clauses, trade secrets, and employee recruitment in the competitive financial and tech sectors. Portofino Technologies, the startup founded by Lancia, received $50 million from investors, including Peter Thiel's venture capital firm Valar Ventures, indicating the scale of the business interest involved.