It is designed based on a very similar lens, the Sigma 28-45mm T1.8 DG DN | Art lens. Hence, the original thought the ...

Sigma's expands it's Art line-up with the 28-105mm f/2.8 DG DN Art lens. Designed for Sony E and Leica L mount cameras ...

John Overdeck and David Siegel, who set up Two Sigma in 2001, are handing over the reins to two new co-CEOs after a years-long feud over the direction of a firm that manages $60 billion in assets ...

Two Sigma's billionaire cofounders, John Overdeck and David Siegel, are stepping down. The $60 billion quant named Carter Lyons and Scott Hoffman as the new co-CEOs. Overdeck and Siegel have made ...

The founders of mega hedge fund Two Sigma are stepping down as co-chief executives in a bid to resolve a yearslong clash that had riven the $60 billion quant-trading powerhouse.

Two Sigma was founded in 2001 by David Siegel, a computer scientist, and John Overdeck, a mathematician, with a focus on bringing technology and data science to investment management. Today ...

By Maureen Farrell Two Sigma, one of the world’s largest hedge funds, said on Wednesday that its billionaire co-founders, John Overdeck and David Siegel, would step down as co-chief executives.

The billionaire founders of Two Sigma Investments — John Overdeck and David Siegel — are stepping down from day-to-day management after feuding for years and handing control to two new co ...