Is the AI boom just a bubble or the start of something bigger? Host Merryn Somerset Webb sits down with Rob Arnott, founder and chairman of the board of Research Affiliates, to compare artificial intelligence mania with the dot-com era, unpack sky-high valuations and market concentration while exploring what rising competition, power constraints and Capex mean for Nvidia and the “Magnificent Seven.” Arnott shares a pragmatic playbook—fade frothy winners, favor fundamentals (including his RAFI approach) and look to small caps, the UK and emerging markets—plus candid takes on Bitcoin and holding a little gold as insurance.

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