Stock‑market turnover is driven not primarily by information arbitrage but by people (especially men and competitive fund managers) treating markets as a game: entertainment plus overconfidence produces persistent, high trading volume even absent a reliable edge. This reframes volume as social signaling and play rather than an information‑aggregation byproduct.
— If trading is mostly a status/gambling activity, policy and regulation should focus more on behavioral safeguards, disclosure of turnover costs, and the political economy of institutions that reward performative activity.
Arnold Kling
2026.04.02
100% relevant
Author cites Keynes (via The Money Game): 'the game of professional investment...the gambling instinct,' and explicitly attributes most active trading to overconfident, competitive (masculine) actors.
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