Bimodal Dynamics of the Artificial Limit Order Book Stock Exchange with Autonomous Traders

This paper explores the bifurcative dynamics of an artificial stock market exchange (ASME) with endogenous, myopic traders interacting through a limit order book (LOB). We showed that agent-based price dynamics possess intrinsic bistability, which is not a result of randomness but an emergent proper

August 25, 2025 · 2 min · thequant.space

FinReflectKG: Agentic Construction and Evaluation of Financial Knowledge Graphs

The financial domain poses unique challenges for knowledge graph (KG) construction at scale due to the complexity and regulatory nature of financial documents. Despite the critical importance of structured financial knowledge, the field lacks large-scale, open-source datasets capturing rich semantic

August 25, 2025 · 2 min · thequant.space

Solution to the Equity Premium Puzzle with Time-Varying Variables

The article’s aim is to provide a solution to the equity premium puzzle with a derived model. The derived model which depends on Consumption Capital Asset Pricing Model gives a solution to the puzzle with the values of coefficient of relative risk aversion around 4.40 by assuming the subjective time

August 25, 2025 · 2 min · thequant.space

Tracing Positional Bias in Financial Decision-Making: Mechanistic Insights from Qwen2.5

The growing adoption of large language models (LLMs) in finance exposes high-stakes decision-making to subtle, underexamined positional biases. The complexity and opacity of modern model architectures compound this risk. We present the first unified framework and benchmark that not only detects and

August 25, 2025 · 2 min · thequant.space

A study about who is interested in stock splitting and why: considering companies, shareholders or managers

There are many misconceptions around stock prices, stock splits, shareholders, investors, and managers behaviour about such informations due to a number of confounding factors. This paper tests hypotheses with a selected database, about the question ‘‘is stock split attractive for companies?’’ in an

August 23, 2025 · 2 min · thequant.space

Combining a Large Pool of Forecasts of Value-at-Risk and Expected Shortfall

We consider the combination of value-at-risk (VaR) and expected shortfall (ES) forecasts when a large pool of candidate forecasts is available. Given the limited literature in this area, we implement a variety of new combining methods. In terms of simplistic methods, in addition to the mean, we cons

August 23, 2025 · 2 min · thequant.space

Detecting Multilevel Manipulation from Limit Order Book via Cascaded Contrastive Representation Learning

Trade-based manipulation (TBM) undermines the fairness and stability of financial markets drastically. Spoofing, one of the most covert and deceptive TBM strategies, exhibits complex anomaly patterns across multilevel prices, while often being simplified as a single-level manipulation. These pattern

August 23, 2025 · 2 min · thequant.space

Risk-Neutral Pricing of Random-Expiry Options Using Trinomial Trees

Random-expiry options are nontraditional derivative contracts that may expire early based on a random event. We develop a methodology for pricing these options using a trinomial tree, where the middle path is interpreted as early expiry. We establish that this approach is free of arbitrage, derive i

August 23, 2025 · 1 min · thequant.space

THEME: Enhancing Thematic Investing with Semantic Stock Representations and Temporal Dynamics

Thematic investing, which aims to construct portfolios aligned with structural trends, remains a challenging endeavor due to overlapping sector boundaries and evolving market dynamics. A promising direction is to build semantic representations of investment themes from textual data. However, despite

August 23, 2025 · 2 min · thequant.space

Asymmetric super-Heston-rough volatility model with Zumbach effect as scaling limit of quadratic Hawkes processes

Hawkes processes were first introduced to obtain microscopic models for the rough volatility observed in asset prices. Scaling limits of such processes leads to the rough-Heston model that describes the macroscopic behavior. Blanc et al. (2017) show that Time-reversal asymmetry (TRA) or the Zumbach

August 22, 2025 · 2 min · thequant.space

On a multivariate extension for Copula-based Conditional Value at Risk

Copula-based Conditional Value at Risk (CCVaR) is defined as an alternative version of the classical Conditional Value at Risk (CVaR) for multivariate random vectors intended to be real-valued. We aim to generalize CCVaR to several dimensions (d>=2) when the dependence structure is given by an Archi

August 22, 2025 · 2 min · thequant.space

Sentiment-Aware Mean-Variance Portfolio Optimization for Cryptocurrencies

This paper presents a dynamic cryptocurrency portfolio optimization strategy that integrates technical indicators and sentiment analysis to enhance investment decision-making. The proposed method employs the 14-day Relative Strength Index (RSI) and 14-day Simple Moving Average (SMA) to capture marke

August 22, 2025 · 2 min · thequant.space

Demand for catastrophe insurance under the path-dependent effects

This paper investigates optimal investment and insurance strategies under a mean-variance criterion with path-dependent effects. We use a rough volatility model and a Hawkes process with a power kernel to capture the path dependence of the market. By adding auxiliary state variables, we degenerate a

August 21, 2025 · 2 min · thequant.space

Eigen Portfolios: From Single Component Models to Ensemble Approaches

The increasing integration of data science techniques into quantitative finance has enabled more systematic and data-driven approaches to portfolio construction. This paper investigates the use of Principal Component Analysis (PCA) in constructing eigen-portfolios - portfolios derived from the princ

August 21, 2025 · 2 min · thequant.space

Non-parametric Causal Discovery for EU Allowances Returns Through the Information Imbalance

We propose to use a recently introduced non-parametric tool named Differentiable Information Imbalance (DII) to identify variables that are causally related – potentially through non-linear relationships – to the financial returns of the European Union Allowances (EUAs) within the EU Emissions Tradi

August 21, 2025 · 2 min · thequant.space

Option pricing under non-Markovian stochastic volatility models: A deep signature approach

This paper studies the pricing problem in which the underlying asset follows a non-Markovian stochastic volatility model. Classical partial differential equation methods face significant challenges in this context, as the option prices depend not only on the current state, but also on the entire his

August 21, 2025 · 2 min · thequant.space

Probabilistic Forecasting Cryptocurrencies Volatility: From Point to Quantile Forecasts

Cryptocurrency markets are characterized by extreme volatility, making accurate forecasts essential for effective risk management and informed trading strategies. Traditional deterministic (point) forecasting methods are inadequate for capturing the full spectrum of potential volatility outcomes, un

August 21, 2025 · 2 min · thequant.space

The Approach of Sliced Inference in Systems of Stochastic Differential Equations with Comments on the Heston Model

Stochastic differential equations have been an important tool in modeling complex financial relations, equipped with the possibility of being multidimensional to better oversee complexities inherent in finance. This multidimensionality, however, comes with a larger parameter space to estimate. There

August 21, 2025 · 2 min · thequant.space

Through-the-Cycle PD Estimation Under Incomplete Data -- A Single Risk Factor Approach

Banks are required to use long-term default probabilities (PDs) of their portfolios when calculating credit risk capital under internal ratings-based (IRB) models. However, the calibration models and historical data typically reflect prevailing market conditions. According to Basel recommendations,

August 21, 2025 · 2 min · thequant.space

Call Option Price using Pearson Diffusion Processes

Following the foundational work of the Black–Scholes model, extensive research has been developed to price the option by addressing its underlying assumptions and associated pricing biases. This study introduces a novel framework for pricing European call options by modeling the underlying asset’s

August 20, 2025 · 2 min · thequant.space