The venture has faced legal challenges by Citadel Securities, whose European arm filed a case in London in June 2022. Portofino said in its initial response that Citadel's legal action was "unmeritorious, anticompetitive and a classic example of corporate bullying." AdvertisementAdvertisementIn January 2022 Griffin sold a $1.2 billion stake in Citadel Securities to venture capital firms Sequoia and Paradigm. "Further, their attempt to improperly poach Vincent Prieur, a New York-based employee described as the 'aggregator of all things crypto' at Citadel Securities, is undisputed. Prieur, who later joined Portofino, had also been the subject of legal action by Citadel Securities that was settled out of court, Bloomberg reported.

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Persons: Alex Casimo, Leonard Lancia, Ken Griffin, Griffin, Peter Thiel, Slack, Zalando, Portofino, Casimo, it's, Peng Zhao, Matt Huang, Lancia, poach Vincent Prieur, Prieur Organizations: Citadel Securities, Portofino Technologies, Citadel, New, Service, Ventures, Global Founders Capital, Global Founders, Lancia, London Court, Portofino, Court, Southern, of, Sequoia, Paradigm, Financial Times, Bloomberg Locations: New York, Wall, Silicon, Miami, Swiss, London, Europe, of New York, Portofino