Robust No-Arbitrage under Projective Determinacy

Drawing on set theory, this paper contributes to a deeper understanding of the structural condition of mathematical finance under Knightian uncertainty. We adopt a projective framework in which all components of the model – prices, priors and trading strategies – are treated uniformly in terms of

March 31, 2025 · 2 min · thequant.space

Modeling Maximum drawdown Records with Piecewise Deterministic Markov Processe in Capital Markets

We propose to model the records of the maximum Drawdown in capital markets by means a Piecewise Deterministic Markov Process (PDMP). We derive statistical results such as the mean and variance that describes the sequence of maximum Drawdown records. In addition, we developed a simulation study and t

March 29, 2025 · 1 min · thequant.space

An Advanced Ensemble Deep Learning Framework for Stock Price Prediction Using VAE, Transformer, and LSTM Model

This research proposes a cutting-edge ensemble deep learning framework for stock price prediction by combining three advanced neural network architectures: The particular areas of interest for the research include but are not limited to: Variational Autoencoder (VAE), Transformer, and Long Short-Ter

March 28, 2025 · 2 min · thequant.space

Equilibrium Reward for Liquidity Providers in Automated Market Makers

We find the equilibrium contract that an automated market maker (AMM) offers to their strategic liquidity providers (LPs) in order to maximize the order flow that gets processed by the venue. Our model is formulated as a leader-follower stochastic game, where the venue is the leader and a representa

March 28, 2025 · 2 min · thequant.space

Short-time behavior of the At-The-Money implied volatility for the jump-diffusion stochastic volatility Bachelier model

In this paper we use Malliavin Calculus techniques in order to obtain expressions for the short-time behavior of the at-the-money implied volatility (ATM-IV) level and skew for a jump-diffusion stock price. The diffusion part is assumed to be the stochastic volatility Bachelier model and the jumps a

March 28, 2025 · 2 min · thequant.space

Dynamic Asset Pricing Theory for Life Contingent Risks

Although the valuation of life contingent assets has been thoroughly investigated under the framework of mathematical statistics, little financial economics research pays attention to the pricing of these assets in a non-arbitrage, complete market. In this paper, we first revisit the Fundamental The

March 27, 2025 · 2 min · thequant.space

From Deep Learning to LLMs: A survey of AI in Quantitative Investment

Quantitative investment (quant) is an emerging, technology-driven approach in asset management, increasingy shaped by advancements in artificial intelligence. Recent advances in deep learning and large language models (LLMs) for quant finance have improved predictive modeling and enabled agent-based

March 27, 2025 · 2 min · thequant.space

Pool Value Replication (CPM) and Impermanent Loss Hedging

This work analytically characterizes impermanent loss for automated market makers (AMMs) in decentralized markets such as Uniswap or Balancer (CPMM). We derive a static replication formula for the pool’s value using a combination of European calls and puts. Furthermore, we establish a result guarant

March 27, 2025 · 1 min · thequant.space

A Causal Perspective of Stock Prediction Models

In the realm of stock prediction, machine learning models encounter considerable obstacles due to the inherent low signal-to-noise ratio and the nonstationary nature of financial markets. These challenges often result in spurious correlations and unstable predictive relationships, leading to poor pe

March 26, 2025 · 2 min · thequant.space

Equity Risk Premiums (ERP): Determinants, Estimation, and Implications – The 2025 Edition

The equity risk premium is the price of risk in equity markets, and it is not only a key input in estimating costs of equity and capital in both corporate

March 26, 2025 · 1 min · thequant.space

Relative portfolio optimization via a value at risk based constraint

In this paper, we consider $n$ agents who invest in a general financial market that is free of arbitrage and complete. The aim of each investor is to maximize her expected utility while ensuring, with a specified probability, that her terminal wealth exceeds a benchmark defined by her competitors’ p

March 26, 2025 · 2 min · thequant.space

Forecasting U.S. equity market volatility with attention and sentiment to the economy

Macroeconomic variables are known to significantly impact equity markets, but their predictive power for price fluctuations has been underexplored due to challenges such as infrequency and variability in timing of announcements, changing market expectations, and the gradual pricing in of news. To ad

March 25, 2025 · 2 min · thequant.space

Asset pre-selection for a cardinality constrained index tracking portfolio with optional enhancement

An index tracker is a passive investment reproducing the return and risk of a market index, an enhanced index tracker offers a return greater than the index. We consider the selection of a portfolio of given cardinality to track an index, both without and with enhancement. We divide the problem into

March 24, 2025 · 2 min · thequant.space

Corporate Finance in the Age of Fintech: Scenarios and Challenges

Blockchain is a technological innovation that has the potential to radically change our financial markets by providing an alternative management approach to the “promise market”, which is the foundation of our financial systems. Its disruptive potential also extends to corporate finance, where block

March 24, 2025 · 2 min · thequant.space

Cryptocurrency Time Series on the Binary Complexity-Entropy Plane: Ranking Efficiency from the Perspective of Complex Systems

We report the first application of a tailored Complexity-Entropy Plane designed for binary sequences and structures. We do so by considering the daily up/down price fluctuations of the largest cryptocurrencies in terms of capitalization (stable-coins excluded) that are worth $circa ,, 90 %$ of the t

March 24, 2025 · 2 min · thequant.space

QubitSwap: The Informational Edge in Decentralised Exchanges

Decentralised exchanges (DEXs) have transformed trading by enabling trustless, permissionless transactions, yet they face significant challenges such as impermanent loss and slippage, which undermine profitability for liquidity providers and traders. In this paper, we introduce QubitSwap, an innovat

March 24, 2025 · 2 min · thequant.space

Rough Heston model as the scaling limit of bivariate cumulative heavy-tailed INAR processes: Weak-error bounds and option pricing

We study nearly unstable bivariate cumulative heavy-tailed INAR($\infty$) processes and show that, under a one-factor parameterization and a suitable scaling, they converge to the rough Heston model. This yields a discrete-time microstructural route to the joint price-variance dynamics and gives exp

March 24, 2025 · 2 min · thequant.space

A Curationary Tale: Logarithmic Regret in DeFi Lending via Dynamic Pricing

Lending within decentralized finance (DeFi) has facilitated over $100 billion of loans since 2020. A long-standing inefficiency in DeFi lending protocols such as Aave is the use of static pricing mechanisms for loans. These mechanisms have been shown to maximize neither welfare nor revenue for part

March 23, 2025 · 2 min · thequant.space

A Simple Strategy to Deal with Toxic Flow

We model the trading activity between a broker and her clients (informed and uninformed traders) as an infinite-horizon stochastic control problem. We derive the broker’s optimal dealing strategy in closed form and use this to introduce an algorithm that bypasses the need to calibrate individual par

March 23, 2025 · 1 min · thequant.space

Agent-Based Models for Two Stocks with Superhedging

An agent-based modelling methodology for the joint price evolution of two stocks is put forward. The method models future multidimensional price trajectories reflecting how a class of agents rebalance their portfolios in an operational way by reacting to how stocks’ charts unfold. Prices are express

March 23, 2025 · 2 min · thequant.space