The dialogue, called Critias, explains how the mythical citadel of Atlantis was adorned ... there were many hints that orichalcum might be a form of brass – an alloy of copper and zinc ...

Citadel Securities' Revenue Slide The first half of 2023 isn't turning out as well for Ken Griffin as last year. At least that's the case at Citadel's market-making division, Citadel Securities. ...