Gray-box Adversarial Attack of Deep Reinforcement Learning-based Trading Agents

In recent years, deep reinforcement learning (Deep RL) has been successfully implemented as a smart agent in many systems such as complex games, self-driving cars, and chat-bots. One of the interesting use cases of Deep RL is its application as an automated stock trading agent. In general, any autom

September 26, 2023 · 2 min · thequant.space

The ATM implied skew in the ADO-Heston model

In this paper similar to [“P. Carr, A. Itkin, 2019”] we construct another Markovian approximation of the rough Heston-like volatility model - the ADO-Heston model. The characteristic function (CF) of the model is derived under both risk-neutral and real measures which is an unsteady three-dimensiona

September 26, 2023 · 2 min · thequant.space

Tasks Makyth Models: Machine Learning Assisted Surrogates for Tipping Points

We present a machine learning (ML)-assisted framework bridging manifold learning, neural networks, Gaussian processes, and Equation-Free multiscale modeling, for (a) detecting tipping points in the emergent behavior of complex systems, and (b) characterizing probabilities of rare events (here, catas

September 25, 2023 · 2 min · thequant.space

Towards a Theory of Maximal Extractable Value II: Uncertainty

Maximal Extractable Value (MEV) is value extractable by temporary monopoly power commonly found in decentralized systems. This extraction stems from a lack of user privacy upon transaction submission and the ability of a monopolist validator to reorder, add, and/or censor transactions. There are two

September 25, 2023 · 2 min · thequant.space

Don't Let MEV Slip: The Costs of Swapping on the Uniswap Protocol

We present the first in-depth empirical characterization of the costs of trading on a decentralized exchange (DEX). Using quoted prices from the Uniswap Labs interface for two pools – USDC-ETH (5bps) and PEPE-ETH (30bps) – we evaluate the efficiency of trading on DEXs. Our main tool is slippage – th

September 24, 2023 · 2 min · thequant.space

Performance Evaluation of Equal-Weight Portfolio and Optimum Risk Portfolio on Indian Stocks

Designing an optimum portfolio for allocating suitable weights to its constituent assets so that the return and risk associated with the portfolio are optimized is a computationally hard problem. The seminal work of Markowitz that attempted to solve the problem by estimating the future returns of th

September 24, 2023 · 2 min · thequant.space

Topology-Agnostic Detection of Temporal Money Laundering Flows in Billion-Scale Transactions

Money launderers exploit the weaknesses in detection systems by purposefully placing their ill-gotten money into multiple accounts, at different banks. That money is then layered and moved around among mule accounts to obscure the origin and the flow of transactions. Consequently, the money is integ

September 24, 2023 · 2 min · thequant.space

Can I Trust the Explanations? Investigating Explainable Machine Learning Methods for Monotonic Models

In recent years, explainable machine learning methods have been very successful. Despite their success, most explainable machine learning methods are applied to black-box models without any domain knowledge. By incorporating domain knowledge, science-informed machine learning models have demonstrate

September 23, 2023 · 2 min · thequant.space

A Problem of Finite-Horizon Optimal Switching and Stochastic Control for Utility Maximization

In this paper, we undertake an investigation into the utility maximization problem faced by an economic agent who possesses the option to switch jobs, within a scenario featuring the presence of a mandatory retirement date. The agent needs to consider not only optimal consumption and investment but

September 22, 2023 · 2 min · thequant.space

Automated Market Makers in Cryptoeconomic Systems: A Taxonomy and Archetypes

Designing automated market makers (AMMs) is crucial for decentralized token exchanges in cryptoeconomic systems. At the intersection of software engineering and economics, AMM design is complex and, if done incorrectly, can lead to financial risks and inefficiencies. We developed an AMM taxonomy for

September 22, 2023 · 1 min · thequant.space

EarnHFT: Efficient Hierarchical Reinforcement Learning for High Frequency Trading

High-frequency trading (HFT) uses computer algorithms to make trading decisions in short time scales (e.g., second-level), which is widely used in the Cryptocurrency (Crypto) market (e.g., Bitcoin). Reinforcement learning (RL) in financial research has shown stellar performance on many quantitative

September 22, 2023 · 2 min · thequant.space

Econometric Model Using Arbitrage Pricing Theory and Quantile Regression to Estimate the Risk Factors Driving Crude Oil Returns

This work adopts a novel approach to determine the risk and return of crude oil stocks by employing Arbitrage Pricing Theory (APT) and Quantile Regression (QR).The APT identifies the underlying risk factors likely to impact crude oil returns.Subsequently, QR estimates the relationship between the fa

September 22, 2023 · 2 min · thequant.space

On the impact of insurance on households susceptible to random proportional losses: An analysis of poverty trapping

In this paper, we consider a risk process with deterministic growth and multiplicative jumps to model the capital of a low-income household. Reflecting the high-risk nature of the low-income environment, capital losses are assumed to be proportional to the level of accumulated capital at the jump ti

September 22, 2023 · 2 min · thequant.space

Predictive AI for SME and Large Enterprise Financial Performance Management

Financial performance management is at the core of business management and has historically relied on financial ratio analysis using Balance Sheet and Income Statement data to assess company performance as compared with competitors. Little progress has been made in predicting how a company will perf

September 22, 2023 · 2 min · thequant.space

A Comprehensive Review on Financial Explainable AI

The success of artificial intelligence (AI), and deep learning models in particular, has led to their widespread adoption across various industries due to their ability to process huge amounts of data and learn complex patterns. However, due to their lack of explainability, there are significant con

September 21, 2023 · 2 min · thequant.space

Estimating Stable Fixed Points and Langevin Potentials for Financial Dynamics

The Geometric Brownian Motion (GBM) is a standard model in quantitative finance, but the potential function of its stochastic differential equation (SDE) cannot include stable nonzero prices. This article generalises the GBM to an SDE with polynomial drift of order q and shows via model selection th

September 21, 2023 · 1 min · thequant.space

Probability of Default modelling with Lévy-driven Ornstein-Uhlenbeck processes and applications in credit risk under the IFRS 9

In this paper we develop a framework for estimating Probability of Default (PD) based on stochastic models governing an appropriate asset value processes. In particular, we build upon a Lévy-driven Ornstein-Uhlenbeck process and consider a generalized model that incorporates multiple latent variable

September 21, 2023 · 2 min · thequant.space

Singular Control in a Cash Management Model with Ambiguity

We consider a singular control model of cash reserve management, driven by a diffusion under ambiguity. The manager is assumed to have maxmin preferences over a set of priors characterized by $κ$-ignorance. A verification theorem is established to determine the firm’s cost function and the optimal c

September 21, 2023 · 2 min · thequant.space

Stock Market Sentiment Classification and Backtesting via Fine-tuned BERT

With the rapid development of big data and computing devices, low-latency automatic trading platforms based on real-time information acquisition have become the main components of the stock trading market, so the topic of quantitative trading has received widespread attention. And for non-strongly e

September 21, 2023 · 2 min · thequant.space

Doubly Robust Mean-CVaR Portfolio

In this study, we address the challenge of portfolio optimization, a critical aspect of managing investment risks and maximizing returns. The mean-CVaR portfolio is considered a promising method due to today’s unstable financial market crises like the COVID-19 pandemic. It incorporates expected retu

September 20, 2023 · 2 min · thequant.space