Citadel says GQS SCI is a systematic-equities unit founded in 2026 and based in Irvine, California. It is led by Alexey Poyarkov, formerly of TGS, and combines quantitative researchers and engineers across the research lifecycle.
The new group builds on the main Global Quantitative Strategies platform for execution, optimization and monitoring. Citadel’s wider GQS page describes an integrated research platform rather than isolated pods and names modern agentic-AI frameworks. This is firm strategy and recruiting material, with no disclosed returns. It also refers to Citadel’s hedge-fund business, not Citadel Securities.