Binary Tree Option Pricing Under Market Microstructure Effects: A Random Forest Approach

Fuente: arXiv
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Autori principali: Deep, Akash, Monico, Chris, Lindquist, W. Brent, Rachev, Svetlozar T., Fabozzi, Frank J.
Natura: Preprint
Pubblicazione: 2025
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author Deep, Akash
Monico, Chris
Lindquist, W. Brent
Rachev, Svetlozar T.
Fabozzi, Frank J.
author_facet Deep, Akash
Monico, Chris
Lindquist, W. Brent
Rachev, Svetlozar T.
Fabozzi, Frank J.
contents We propose a machine learning-based extension of the classical binomial option pricing model that incorporates key market microstructure effects. Traditional models assume frictionless markets, overlooking empirical features such as bid-ask spreads, discrete price movements, and serial return correlations. Our framework augments the binomial tree with path-dependent transition probabilities estimated via Random Forest classifiers trained on high-frequency market data. This approach preserves no-arbitrage conditions while embedding real-world trading dynamics into the pricing model. Using 46,655 minute-level observations of SPY from January to June 2025, we achieve an AUC of 88.25% in forecasting one-step price movements. Order flow imbalance is identified as the most influential predictor, contributing 43.2% to feature importance. After resolving time-scaling inconsistencies in tree construction, our model yields option prices that deviate by 13.79% from Black-Scholes benchmarks, highlighting the impact of microstructure on fair value estimation. While computational limitations restrict the model to short-term derivatives, our results offer a robust, data-driven alternative to classical pricing methods grounded in empirical market behavior.
format Preprint
id arxiv_https___arxiv_org_abs_2507_16701
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Binary Tree Option Pricing Under Market Microstructure Effects: A Random Forest Approach
Deep, Akash
Monico, Chris
Lindquist, W. Brent
Rachev, Svetlozar T.
Fabozzi, Frank J.
Computational Finance
We propose a machine learning-based extension of the classical binomial option pricing model that incorporates key market microstructure effects. Traditional models assume frictionless markets, overlooking empirical features such as bid-ask spreads, discrete price movements, and serial return correlations. Our framework augments the binomial tree with path-dependent transition probabilities estimated via Random Forest classifiers trained on high-frequency market data. This approach preserves no-arbitrage conditions while embedding real-world trading dynamics into the pricing model. Using 46,655 minute-level observations of SPY from January to June 2025, we achieve an AUC of 88.25% in forecasting one-step price movements. Order flow imbalance is identified as the most influential predictor, contributing 43.2% to feature importance. After resolving time-scaling inconsistencies in tree construction, our model yields option prices that deviate by 13.79% from Black-Scholes benchmarks, highlighting the impact of microstructure on fair value estimation. While computational limitations restrict the model to short-term derivatives, our results offer a robust, data-driven alternative to classical pricing methods grounded in empirical market behavior.
title Binary Tree Option Pricing Under Market Microstructure Effects: A Random Forest Approach
topic Computational Finance
url https://arxiv.org/abs/2507.16701