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q-fin.MF2026
Collective completeness and pricing-hedging duality II
Alessandro Doldi, Marco Frittelli, Marco Maggis
This paper complements and extends Doldi, Frittelli and Maggis, Collective completeness and pricing-hedging duality, Math. Finan. Econ. 19, 757-784 (2025), by studying collective p…
q-fin.MF2026
When cooperation is beneficial to all agents
Alessandro Doldi, Marco Frittelli, Marco Maggis
Within a general semimartingale framework, we study the relationship between collective market efficiency and individual rationality. We derive a necessary and sufficient condition…