“This Is A Frothy Bubble” | Rob Arnott on Excessive Valuations, AI, and Reinventing Cap-Weighted Indexing

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Rob Arnott, founder and chairman of the board of Research Affiliates, joins Jack today for an in-depth conversation on AI, bubbles, asset allocation, weighting in index funds, and other topics. The record heights of today’s markets brought on from excitement in the AI industry remind many of the dotcom bubble, which Rob examines using his decades of experience in the finance industry. With how fast everything moves in these turbulent times, this is one episode a dedicated observers cannot miss. Recorded on September 5th, 2025.

Research Papers discussed:“RACWI: Reinventing Cap-Weighted Indexing”: https://www.researchaffiliates.com/publications/articles/1095-racwi-reinventing-cap-weighted-indexing

“The AI Boom vs. the Dot-Com Bubble: Have We Seen This Movie Before?”: https://www.researchaffiliates.com/publications/articles/1038-ai-boom-dot-com-bubble-seen-this-before

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