A Stochastic Tree for Bubble Asset Modelling and Pricing

  • Christian Gourieroux
  • , Joann Jasiak

Research output: Contribution to journalArticlepeer-review

Abstract

We introduce a new stochastic tree representation of a strictly stationary submartingale process for modelling, forecasting, and pricing speculative bubbles on commodity and cryptocurrency markets. The model is compared to other trees proposed in the literature on bubble asset modelling and stochastic volatility approximation. We show that the proposed model is an extension of the well-known Blanchard-Watson bubble. The model provides (quasi) closed-form pricing formulas for European options, which are derived and illustrated.

Original languageEnglish
Pages (from-to)932-944
Number of pages13
JournalJournal of Time Series Analysis
Volume46
Issue number5
DOIs
Publication statusPublished - 1 Sept 2025
Externally publishedYes

Keywords

  • European option
  • bubble asset
  • bubble pattern
  • local trends
  • stationary submartingale
  • stochastic intensity
  • stochastic tree

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