Cassell will leverage his new CIO role to oversee infrastructure strategy and consulting at Pico. Agency broker and low-latency data infrastructure provider Pico Quantitative Trading has appointed former NYSE US chief information officer Paul Cassell as CIO, to support the firm's global expansion, replacing and expanding the role of former chief technology officer Sonny Baillargeon, who left Pico last month to join Chicago-based investment firm Citadel as managing director and global head of infrastructure and architecture.
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