In the long arc of technological transformation, few moments carry as much symbolic weight as when a pioneering idea submits itself to the judgment of public markets. Anthropic, the artificial intelligence company that has become a focal point for investor ambition, has quietly adjusted its IPO timeline by several weeks — moving its prospectus filing to late September and investor marketing to mid-October at earliest. The delay is less a stumble than a measured pause, as the company and its Wall Street partners choreograph what could become one of the largest public offerings in financial hist