Top JPMorgan trading executive jumps to hedge fund Rokos found 2025 › Jan › 31 (Fri) @ 21:47 UTC a story from Financial Times › Financial Times JPMorgan ■■ Rokos ■■ Jason ■■ Sippel ■■ US ■■■ preview Jason Sippel to leave US bank after more than two decades for UK-based macro firm