A Deterministic Limit Order Book Simulator with Hawkes-Driven Order Flow

We present a reproducible research framework for market microstructure combining a deterministic C++ limit order book (LOB) simulator with stochastic order flow generated by multivariate marked Hawkes processes. The paper derives full stability and ergodicity proofs for both linear and nonlinear Haw

October 9, 2025 · 1 min · thequant.space

An Adaptive Multi Agent Bitcoin Trading System

This paper presents a Multi Agent Bitcoin Trading system that utilizes Large Language Models (LLMs) for alpha generation and portfolio management in the cryptocurrencies market. Unlike equities, cryptocurrencies exhibit extreme volatility and are heavily influenced by rapidly shifting market sentime

October 9, 2025 · 2 min · thequant.space

Intrinsic Geometry of the Stock Market from Graph Ricci Flow

We use the discrete Ollivier-Ricci graph curvature with Ricci flow to examine the intrinsic geometry of financial markets through the empirical correlation graph of the NASDAQ 100 index. Our main result is the development of a technique to perform surgery on the neckpinch singularities that form dur

October 9, 2025 · 2 min · thequant.space

Lifted Heston Model: Efficient Monte Carlo Simulation with Large Time Steps

The lifted Heston model is a stochastic volatility model emerging as a Markovian lift of the rough Heston model and the class of rough volatility processes. The model encodes the path dependency of volatility on a set of N square-root state processes driven by a common stochastic factor. While the s

October 9, 2025 · 2 min · thequant.space

Multi-Agent Analysis of Off-Exchange Public Information for Cryptocurrency Market Trend Prediction

Cryptocurrency markets present unique prediction challenges due to their extreme volatility, 24/7 operation, and hypersensitivity to news events, with existing approaches suffering from key information extraction and poor sideways market detection critical for risk management. We introduce a theoret

October 9, 2025 · 2 min · thequant.space

Smart Contract-Enabled Procurement under Bounded Demand Variability: A Truncated Normal Approach

This study develops a strategic procurement framework integrating blockchain-based smart contracts with bounded demand variability modeled through a truncated normal distribution. While existing research emphasizes the technical feasibility of smart contracts, the operational and economic implicatio

October 9, 2025 · 2 min · thequant.space

Tail-Safe Stochastic-Control SPX-VIX Hedging: A White-Box Bridge Between AI Sensitivities and Arbitrage-Free Market Dynamics

We present a white-box, risk-sensitive framework for jointly hedging SPX and VIX exposures under transaction costs and regime shifts. The approach couples an arbitrage-free market teacher with a control layer that enforces safety as constraints. On the market side, we integrate an SSVI-based implied

October 9, 2025 · 2 min · thequant.space

Time-Varying Volatility of Bank Betas

Research has shown banks match interest income and expense betas, and thereby obtain net interest income margins which are insensitive to changes in short-term interest rates. The present analysis extends this research in a number of ways. First, we use state-space methods to estimate time-varying b

October 9, 2025 · 2 min · thequant.space

Bayesian Portfolio Optimization by Predictive Synthesis

Portfolio optimization is a critical task in investment. Most existing portfolio optimization methods require information on the distribution of returns of the assets that make up the portfolio. However, such distribution information is usually unknown to investors. Various methods have been propose

October 8, 2025 · 2 min · thequant.space

Diffusion-Augmented Reinforcement Learning for Robust Portfolio Optimization under Stress Scenarios

In the ever-changing and intricate landscape of financial markets, portfolio optimisation remains a formidable challenge for investors and asset managers. Conventional methods often struggle to capture the complex dynamics of market behaviour and align with diverse investor preferences. To address t

October 8, 2025 · 2 min · thequant.space

Dynamic Factor Analysis of Price Movements in the Philippine Stock Exchange

The intricate dynamics of stock markets have led to extensive research on models that are able to effectively explain their inherent complexities. This study leverages the econometrics literature to explore the dynamic factor model as an interpretable model with sufficient predictive capabilities fo

October 8, 2025 · 2 min · thequant.space

Insurance products with guarantees in an affine setting

To make medium- and long-term insurance products attractive, it is essential to enable participation in stock market returns. However, to eliminate downside risk, guarantees must be included, which naturally leads to the challenge of valuing such contracts within a unified insurance-finance framewor

October 8, 2025 · 2 min · thequant.space

Inverse Portfolio Optimization with Synthetic Investor Data: Recovering Risk Preferences under Uncertainty

This study develops an inverse portfolio optimization framework for recovering latent investor preferences including risk aversion, transaction cost sensitivity, and ESG orientation from observed portfolio allocations. Using controlled synthetic data, we assess the estimator’s statistical properties

October 8, 2025 · 2 min · thequant.space

Minimizing the Value-at-Risk of Loan Portfolio via Deep Neural Networks

Risk management is a prominent issue in peer-to-peer lending. An investor may naturally reduce his risk exposure by diversifying instead of putting all his money on one loan. In that case, an investor may want to minimize the Value-at-Risk (VaR) or Conditional Value-at-Risk (CVaR) of his loan portfo

October 8, 2025 · 2 min · thequant.space

Nonparametric Estimation of Self- and Cross-Impact

We introduce an offline nonparametric estimator for concave multi-asset propagator models based on a dataset of correlated price trajectories and metaorders. Compared to parametric models, our framework avoids parameter explosion in the multi-asset case and yields confidence bounds for the estimator

October 8, 2025 · 2 min · thequant.space

Smart Contract Adoption in Derivative Markets under Bounded Risk: An Optimization Approach

This study develops and analyzes an optimization model of smart contract adoption under bounded risk, linking structural theory with simulation and real-world validation. We examine how adoption intensity alpha is structurally pinned at a boundary solution, invariant to variance and heterogeneity, w

October 8, 2025 · 2 min · thequant.space

A Microstructure Analysis of Coupling in CFMMs

The programmable and composable nature of smart contract protocols has enabled the emergence of novel market structures and asset classes that are architecturally frictional to implement in traditional financial paradigms. This fluidity has produced an understudied class of market dynamics, particul

October 7, 2025 · 2 min · thequant.space

Coherent estimation of risk measures

We develop a statistical framework for risk estimation, inspired by the axiomatic theory of risk measures. Coherent risk estimators – functionals of P&L samples inheriting the economic properties of risk measures – are defined and characterized through robust representations linked to $L$-estimators

October 7, 2025 · 2 min · thequant.space

FinReflectKG - EvalBench: Benchmarking Financial KG with Multi-Dimensional Evaluation

Large language models (LLMs) are increasingly being used to extract structured knowledge from unstructured financial text. Although prior studies have explored various extraction methods, there is no universal benchmark or unified evaluation framework for the construction of financial knowledge grap

October 7, 2025 · 2 min · thequant.space

From Classical Rationality to Contextual Reasoning: Quantum Logic as a New Frontier for Human-Centric AI in Finance

We consider state of the art applications of artificial intelligence (AI) in modelling human financial expectations and explore the potential of quantum logic to drive future advancements in this field. This analysis highlights the application of machine learning techniques, including reinforcement

October 7, 2025 · 2 min · thequant.space