Research
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arXiv research

A locally-built, LLM-digested index of recent arXiv papers in quant finance, geometry/topology, and statistical ML — keyword search served straight from SQLite on this machine.

168,657 papers · 148 categories

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76152228304 · Jun 202019922001200920172026
48 results for portfolio architecture

AI agents manage portfolios, improving on human oversight.

problem Improving strategic asset allocation for institutional investors.
method 50 specialized agents produce capital market assumptions, construct portfolios, critique, and vote on each other's output.
result Meta-agent compares forecasts with realized returns and improves agent performance.

Diffolio uses a diffusion model for multivariate financial forecasting and portfolio construction.

problem Probabilistic forecasting of multivariate financial time-series with complex cross-sectional dependencies.
method Diffolio employs a denoising network with hierarchical attention architecture, incorporating asset-level and market-level layers and a correlation-guided regularizer.
result Diffolio outperforms various probabilistic forecasting baselines in multivariate forecasting accuracy and portfolio performance.

Develops a new framework for integrating satellite allocations in small portfolios.

problem Feasibility constraints in small portfolios, not return predictability, are the primary concerns.
method A four-layer feasibility framework: physical, economic, structural, and epistemic.
result Closed-form feasibility bounds on satellite size, turnover, and breadth without return forecasts.

EXAMM evolves RNNs for stock return prediction and portfolio trading.

problem Predicting stock returns for optimal portfolio trading.
method Evolutionary Neural Architecture Search (EXAMM) for evolving RNNs.
result Evolving RNNs outperform traditional benchmarks in stock trading.

WaveCorr uses deep reinforcement learning to manage portfolios more effectively.

problem Dynamic portfolio rebalancing with multiple factors.
method Introduces WaveCorr, a DRL network with permutation invariant correlation processing.
result WaveCorr outperforms existing methods with up to 25% improvement in Sharpe ratio.

Deep learning models improve stock market portfolio returns.

problem Optimizing portfolio returns using deep learning methods.
method Deep neural networks (feedforward and LSTM) applied to stock market excess returns forecasting.
result Deep learning models deliver significant gains in portfolio certainty equivalent returns and Sharpe ratios.

A novel framework combines LLMs and RL for financial portfolio optimization.

problem Optimizing financial portfolios using sentiment analysis and market indicators.
method Hierarchical RL structure with base, meta, and super-agents.
result Achieved a 26% annualized return and Sharpe ratio of 1.2.

Application of neural network architectures for financial prediction has been actively studied in recent years. This paper presents a comparative study that investigates and compares feed-forward neural network (FNN) and adaptive neural fuzzy inference system (ANFIS) on stock prediction using fundamental financial rati…

2019-06-12abs ↗pdf ↗

Deep learning improves portfolio optimization in volatile markets.

problem Challenges in long-only, multi-asset strategies across market cycles.
method Training DL models with limited regime data using pre-training techniques and transformer architectures.
result Models show resilience and improved predictive accuracy in volatile markets.

DSL uses supervised learning to optimize portfolios, improving stability and performance.

problem Optimizing robust portfolios in financial markets.
method DSL reframes portfolio construction as a supervised learning problem, using cross-entropy loss and optimizing Sharpe or Sortino ratios. Deep Ensemble methods are employed to reduce variance.
result DSL outperforms traditional and machine learning methods, achieving higher median returns and more stable risk-adjusted performance.

Proposes using diffusion models for probabilistic stock market predictions.

problem Uncertainties in financial data make deterministic models ineffective for stock market predictions.
method Utilizes Denoising Diffusion Probabilistic Models (DDPM) and Masked Relational Transformer (MRT).
result Achieves state-of-the-art performance in stock movement prediction and portfolio management.

New AI platform screens portfolios for desirable firms and news.

problem Optimizing portfolio selection with AI.
method Two LLM agents screen for firm fundamentals and news sentiment. Agents deliberate to generate buy/sell signals. High-dimensional estimation determines optimal weights.
result Screened portfolio's Sharpe ratio consistently estimates target, superior to baseline and conventional approaches.

Paper uses neural networks to compress large portfolios of options, reducing risk and capital requirements.

problem Managing risk and capital requirements for large portfolios of financial options.
method Artificial neural network framework for portfolio compression, static hedging, and risk management.
result The compressed portfolio's risk profiles align closely with the target portfolio's, reducing capital requirements.

A new trading model uses deep reinforcement learning to optimize portfolio weights.

problem Optimizing portfolio weights with risk and return considerations.
method Improved deep reinforcement learning with actor-critic architecture, quantile regression, and asset short selling.
result The proposed model outperforms benchmark strategies in backtesting.

Study proposes adaptive RL for dynamic portfolio optimization.

problem Traditional portfolio optimization models fail to adapt to regime shifts.
method Regime-aware reinforcement learning framework with hybrid observations and constrained reward functions.
result Transformer PPO achieves highest risk-adjusted returns, while LSTM variants offer a good balance.

System designs for analyzing and pricing non-performing consumer credit portfolios.

problem Technical challenges in analyzing and pricing portfolios of non-performing consumer credit loans.
method Bottom-up architecture, simultaneous quantile regression, R-copula, Gaussian one-factor copula model.
result Successfully developed a methodology for analyzing credit portfolio risks of consumer loans.

Integrates prediction models into portfolio optimization for better asset allocation.

problem Traditional portfolio optimization ignores prediction models, leading to suboptimal decisions.
method Developed a framework that combines regression prediction with mean-variance optimization, providing analytical solutions and neural-network-based optimization for inequality constraints.
result Demonstrated through simulations that integrating prediction models improves portfolio performance.

Deep neural network learns portfolio construction and volatility forecasting.

problem Diversified risk-adjusted time-series momentum portfolios need robust volatility estimation.
method Multi-Task Learning in a deep neural network architecture.
result Deep learning approach outperforms existing TSMOM strategies.

Auto-PyTorch automates deep learning by optimizing neural architectures and hyperparameters.

problem Automated deep learning for tabular data with robust and efficient optimization.
method Combines multi-fidelity optimization, portfolio construction, and warmstarting with ensembling.
result Achieves state-of-the-art performance on tabular benchmarks.

DSPO optimizes portfolio construction from raw stock data efficiently.

problem Manual design and misalignment in traditional portfolio construction methods.
method End-to-end neural network framework with Monotonical Logistic Regression loss.
result DSPO constructs optimal sorted portfolios with high performance metrics.

Survey of AI in finance covering models, strategies, and knowledge systems.

problem Challenges in applying AI to financial markets, especially in high-frequency trading.
method Systematic analysis of financial AI across predictive models, decision frameworks, and knowledge augmentation systems.
result Critical trade-offs and gaps between theoretical advances and practical implementation in financial AI.

Hybrid LSTM-PPO optimizes dynamic portfolios with better performance.

problem Dynamic portfolio optimization under non-stationary market conditions.
method Combines LSTM for forecasting and PPO for adaptive portfolio adjustments.
result Hybrid framework outperforms single-model and equal-weight approaches in various metrics.

Paper introduces novel Bandit algorithms for non-stationary environments in finance.

problem Non-stationary reward distributions in financial markets.
method Introduces Adaptive Discounted Thompson Sampling (ADTS) and Combinatorial Adaptive Discounted Thompson Sampling (CADTS) for non-stationary environments in portfolio optimization.
result Bandit Networks improve portfolio optimization performance by 20% compared to classical models.

Paper uses AI to optimize crypto portfolios, showing better risk-adjusted returns.

problem Managing volatile crypto markets with high volatility.
method Multi-agent system designed to autonomously construct and evaluate crypto-asset allocations.
result Dynamic optimization strategy outperforms static equal weighting strategy in terms of risk-adjusted returns.

A new model optimizes portfolios by learning stock return distributions conditioned on factors.

problem Optimizing portfolios with high-dimensional asset-specific factors.
method Conditional Diffusion Transformer architecture linking each asset's return to its factor vector.
result The model outperforms benchmarks in mean-variance and mean-CVaR optimization.

L2GMOM learns financial networks and optimizes momentum strategies.

problem Expensive databases and financial expertise limit network construction accessibility.
method End-to-end machine learning framework (L2GMOM) that learns networks and optimizes trading signals.
result Significant improvement in portfolio profitability and risk control with Sharpe ratio of 1.74.

FinRL-X unifies trading components for AI and rule-based strategies.

problem Inconsistent between research and live deployment in trading platforms.
method Modular architecture integrating data processing, strategy construction, backtesting, and execution.
result Unified protocol supports AI and rule-based trading components without altering execution.

Reinforcement learning improves portfolio optimization, but state normalization affects performance.

problem State normalization affects reinforcement learning's performance in portfolio optimization.
method Evaluated two normalization methods across three markets.
result State normalization degrades reinforcement learning's performance in portfolio optimization.

Deep learning improves covariance matrix estimation for better portfolio risk management.

problem Improving the accuracy of covariance matrix estimation for portfolio risk management.
method Formulated as a learning problem, used deep learning to automatically discover risk factors.
result 1.9% higher explained variance and reduced portfolio risk.

Deep RL optimizes dynamic portfolio weights in China's stock market.

problem Traditional portfolio optimization methods struggle with dynamic asset weight adjustments.
method Developed a deep reinforcement learning framework with novel reward functions and random sampling.
result Model outperforms traditional methods in portfolio optimization and risk mitigation.

Paper presents an ADMM-based approach to efficiently integrate quadratic programming layers into neural networks.

problem Integrating quadratic programs into neural networks for optimization.
method An ADMM-based network layer architecture for solving quadratic programs efficiently.
result The ADMM layer is approximately an order of magnitude faster than existing methods for medium scaled problems.

Paper presents a hybrid framework combining sentiment analysis and market indicators for financial portfolio optimization.

problem Improving financial portfolio optimization through better integration of sentiment and market data.
method A three-tier hierarchical RL framework integrating LLMs, DRL, and market data.
result Achieved a 26% annualized return and Sharpe ratio of 1.2, outperforming benchmarks.

AI models outperform simple rules in cross-asset futures timing, especially with lower transaction costs.

problem Optimizing cross-asset portfolio weights using traditional forecasting and optimization methods.
method End-to-end AI policies that map market states directly to portfolio weights, trained on CME futures using a differentiable Sharpe ratio loss function.
result Transformer-based AI policies outperform simple rules and equal weighting, trading less and matching or exceeding equal weighting through moderate transaction costs.

Hierarchical AI multi-agent framework optimizes equity portfolios in China's A-share market.

problem Optimizing equity portfolios in China's A-share market using AI and multi-agent systems.
method A hierarchical multi-agent design integrating macro, firm-level, and reinforcement learning approaches.
result Consistently outperforms benchmarks and state-of-the-art systems on risk-adjusted returns and drawdown control.

MSPM uses modular agents to manage financial portfolios efficiently.

problem Scalability and reusability issues in RL-based financial portfolio management.
method Modular design with Evolving Agent Module (EAM) and Strategic Agent Module (SAM).
result MSPM improves profit accumulation by at least 186.5% compared to CRP.

Deep neural network solves portfolio optimization with MGARCH and small transaction costs.

problem Optimizing portfolios with MGARCH and small transaction costs.
method Fixed-point RL algorithm using neural networks.
result NN algorithm shows positive testing performance.

RegimeFolio optimizes portfolios by adapting to changing market regimes.

problem Non-stationary markets with shifting volatility regimes.
method Explicitly models volatility regimes with sector-specific ensemble forecasting and adaptive mean-variance allocation.
result Significant improvement in return and robustness compared to conventional methods.

A motif-based framework identifies local spillover structures in financial markets.

problem Aggregate risk spillovers obscure local interaction patterns in systemic risk.
method Develops a motif-based framework using multiscale backbones and colored motifs.
result Motif-based portfolios outperform traditional benchmarks on risk-adjusted returns.

Method reconstructs hidden Markov chains from insurance data.

problem Recovering hidden Markov chains from incomplete insurance data.
method Neural architecture to explicitly provide transition probabilities.
result Neural model successfully validates decompression of insurance information.

A multi-agent system improves crypto portfolio management by processing diverse data types.

problem Managing cryptocurrency portfolios requires processing various data types under high volatility.
method A multi-agent system with three specialized agents for market dynamics, news sentiment, and signal fusion.
result The best configuration, Hierarchical (Skill), achieved a 133.52% cumulative return and 1.502 Sharpe ratio.

Hybrid classical-quantum framework optimizes portfolio rebalancing with reduced transaction costs.

problem Optimizing portfolio rebalancing with reduced transaction costs and lookahead bias.
method Combining Ledoit-Wolf shrinkage covariance estimation, hierarchical correlation clustering, entropy-regularised Genetic Algorithm, minimum-variance and equal-weight benchmarks, QUBO formulation, and QAOA for solving the combinatorial optimisation problem.
result GA + QAOA strategy outperforms classical methods with reduced rebalances and transaction costs.

Study proposes a new method for deep portfolio optimization using residual factors.

problem Non-stationary financial market makes traditional machine learning methods ineffective.
method Predict distribution of residual factors using a novel neural network architecture with financial inductive biases.
result Demonstrated improved performance on U.S. and Japanese stock market data.

Data-driven optimization improves mean-variance portfolios by penalizing norms.

problem Estimation error in mean-variance optimization.
method Augment MVO with norm penalties, use neural networks for optimization, and compute derivatives implicitly.
result Data-driven optimization reduces portfolio risk compared to standard MVO.