Quadrature Capital (QRT)

Quadrature trades only its own money and says almost nothing about how. Founded in 2008 by Greg Skinner and Suneil Setiya, it runs statistical, market-neutral models across global securities, and it returned all external capital around 2018 to operate purely as a principal.

Skinner came up through D.E. Shaw, where he ran European equity-linked arbitrage in the late 1990s, before the G-Research years that preceded Quadrature. The founders also bankroll the Quadrature Climate Foundation, a major UK climate charity, while the trading firm keeps a deliberately minimal public presence from its Leadenhall Building base.