Citadel drops U.S. Portofino suit

- Citadel Securities quietly abandoned its multi‑year U.S. trade‑secrets lawsuit against Portofino after securing a judgment in the UK and shifting focus to collection. - The firm won roughly £6 million in a UK arbitration and chose to prioritize a collectible enforcement path over parallel U.S. litigation. - The move underscores a pragmatic, expected‑value approach to legal strategy; Citadel also joined a separate U.S. insider‑trading suit tied to China broker crackdowns. (bloomberg.com) (coindesk.com) (caixinglobal.com)