During Citigroup's third-quarter earnings conference call, Mark Mason, the bank's Chief Financial Officer, addressed inquiries concerning artificial intelligence (AI). He remarked that it is difficult to overlook the telltale signs of speculative bubbles emerging across various industries. While affirming the bank's robust business operations and extensive customer base, Mason cautioned that current stock valuations and price-to-earnings ratios indicate potential overvaluation and bubble-like conditions in certain sectors. He emphasized that the future trajectory of these markets remains uncertain. With AI-related investments gaining momentum, growing market anxieties about the possibility of an AI-driven asset bubble have also surfaced.