Diffusion Models in Finance: A Survey

By Zhuohan Wang, Carmine Ventre

Rating

1440
Battle Count: 60

Relevance

9/10
Highly relevant to quantitative trading. The survey covers diffusion models applied to: (1) stock price/return prediction and forecasting, (2) portfolio optimization and construction, (3) high-frequency trading and market making (FlowHFT), (4) limit order book simulation for backtesting, (5) stress testing and scenario generation for risk management, (6) trading signal generation via denoising, (7) reinforcement learning for trading policies, (8) derivative pricing, and (9) correlation structure modeling for multi-asset strategies. The paper directly addresses the challenge of modeling complex financial distributions needed for trading decisions under uncertainty.

Implementation Complexity

7/10
As a survey, the paper itself does not require implementation. However, the methods it surveys are complex: diffusion models require training neural networks for score/noise prediction, implementing forward/reverse SDE processes, designing appropriate noise schedules, handling conditioning mechanisms, and implementing sampling accelerators (DDIM, DPM-Solver, etc.). Financial applications add further complexity: preserving stylized facts (heavy tails, volatility clustering), handling mixed-type data, respecting market microstructure constraints (tick sizes, bid-ask ordering), and integrating with downstream decision-making pipelines. The paper provides Algorithm 1 and Algorithm 2 as pseudocode for training and sampling.

Reproducibility

3/5
The authors open-sourced a repository (https://github.com/ZhuoHan1998/Diffusion-Models-In-Finance) containing references and resources. However, as a survey paper, it does not present a single reproducible experiment. The referenced papers vary widely in data availability, code release, and experimental setup. Many referenced papers use proprietary financial data, making full reproducibility of the surveyed literature difficult.

About this paper

Methodology: Systematic Literature Survey. Problem types: Generative Modeling, Time Series Forecasting, Portfolio Optimization, Risk Management, Market Making, Algorithmic Execution, Density Estimation, Anomaly Detection, Imbalanced Learning, Reinforcement Learning, Optimization, Structured Prediction, Sequence-to-Sequence Learning, Transfer Learning, Semi-supervised Learning, Unsupervised Learning, Causal Inference, Multi-task Learning.

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