One nation, one portfolio: How AI biases could leave us all holding the same bag

Mint Money One nation, one portfolio: How AI biases could leave us all holding the same bag Chandni Rani , Simarjeet Singh 4 min read 16 Dec 2025, 02:28 pm IST AI models' training diet is dominated by firms with the biggest digital footprints. Summary Generative AI is quietly reinforcing one of our most persistent investing biases – familiarity – thanks to inherent disparities in training data. If we’re not careful, we could find ourselves with portfolios that look eerily similar, carry the same risks, and collapse in unison.