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Late-Night TV's Sleep Drain Hits Stock Markets
9 Dec
Summary
- Market returns significantly decline after popular late-night shows release.
- S&P 500 index drops 0.25% on average the day after popular shows debut.
- Large-cap stocks are most affected due to institutional investor fatigue.

The rise of streaming services and their midnight 'dump releases' of new shows has led to a widespread phenomenon of binge-watching, which researchers now link to observable impacts on financial markets. Studies reveal that market returns tend to decrease significantly on the day following the release of popular late-night television series. Specifically, the S&P 500 index has shown an average decline of 0.25% after these releases.
This effect appears most pronounced in larger-capitalization stocks, a finding that contrasts with previous research on trader fatigue. Researchers speculate that sophisticated institutional investors, who often operate on less sleep, may be more susceptible to the cognitive disruptions caused by extended viewing sessions. This could lead to impaired decision-making and an asymmetric allocation of cognitive resources, ultimately affecting trading outcomes.




