The speculative subject displaced homo economicus as the organizing figure of markets and publics.

Evidence

As fin de siècle societies gradually succumbed to the speculative fancies of finance, the contested figure of homo economicus started to give way to a new subject, around which both markets and publics gravitated. The advance of homo speculans began in earnest. — Aris Komporozos-Athanasiou, Speculative Communities, 111

Categorization

• DEFINE: Names the book’s core protagonist — homo speculans replaces homo economicus as the defining economic subject.
• corroborated: 2 independent passages support this claim — Aris Komporozos-Athanasiou, Speculative Communities: Living With…, 111