
arXiv: 2204.12251
AbstractWe show that pointwise limits of semistatic trading strategies in discrete time are again semistatic strategies. The analysis is carried out in full generality for a two‐period model, and under a probabilistic condition for multiperiod, multistock models. Our result contrasts with a counterexample of Acciaio, Larsson, and Schachermayer, and shows that their observation is due to a failure of integrability rather than instability of the semistatic form. Mathematically, our results relate to the decomposability of functions as studied in the context of Schrödinger bridges.
FOS: Economics and business, Quantitative Finance - Mathematical Finance, Financial markets, semistatic trading, Probability (math.PR), FOS: Mathematics, 91G10, 60H05, 26B40, Mathematical Finance (q-fin.MF), Mathematics - Probability, Borwein-Lewis theorem
FOS: Economics and business, Quantitative Finance - Mathematical Finance, Financial markets, semistatic trading, Probability (math.PR), FOS: Mathematics, 91G10, 60H05, 26B40, Mathematical Finance (q-fin.MF), Mathematics - Probability, Borwein-Lewis theorem
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