{"title":"Artificial Intelligence-based Analysis of Change in Public Finance between US and International Markets","authors":"Kapil Panda","doi":"arxiv-2403.18823","DOIUrl":"https://doi.org/arxiv-2403.18823","url":null,"abstract":"Public finances are one of the fundamental mechanisms of economic governance\u0000that refer to the financial activities and decisions made by government\u0000entities to fund public services, projects, and operations through assets. In\u0000today's globalized landscape, even subtle shifts in one nation's public debt\u0000landscape can have significant impacts on that of international finances,\u0000necessitating a nuanced understanding of the correlations between international\u0000and national markets to help investors make informed investment decisions.\u0000Therefore, by leveraging the capabilities of artificial intelligence, this\u0000study utilizes neural networks to depict the correlations between US and\u0000International Public Finances and predict the changes in international public\u0000finances based on the changes in US public finances. With the neural network\u0000model achieving a commendable Mean Squared Error (MSE) value of 2.79, it is\u0000able to affirm a discernible correlation and also plot the effect of US market\u0000volatility on international markets. To further test the accuracy and\u0000significance of the model, an economic analysis was conducted that aimed to\u0000correlate the changes seen by the results of the model with historical stock\u0000market changes. This model demonstrates significant potential for investors to\u0000predict changes in international public finances based on signals from US\u0000markets, marking a significant stride in comprehending the intricacies of\u0000global public finances and the role of artificial intelligence in decoding its\u0000multifaceted patterns for practical forecasting.","PeriodicalId":501045,"journal":{"name":"arXiv - QuantFin - Portfolio Management","volume":"4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140325520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Onflow: an online portfolio allocation algorithm","authors":"Gabriel Turinici, Pierre Brugiere","doi":"arxiv-2312.05169","DOIUrl":"https://doi.org/arxiv-2312.05169","url":null,"abstract":"We introduce Onflow, a reinforcement learning technique that enables online\u0000optimization of portfolio allocation policies based on gradient flows. We\u0000devise dynamic allocations of an investment portfolio to maximize its expected\u0000log return while taking into account transaction fees. The portfolio allocation\u0000is parameterized through a softmax function, and at each time step, the\u0000gradient flow method leads to an ordinary differential equation whose solutions\u0000correspond to the updated allocations. This algorithm belongs to the large\u0000class of stochastic optimization procedures; we measure its efficiency by\u0000comparing our results to the mathematical theoretical values in a log-normal\u0000framework and to standard benchmarks from the 'old NYSE' dataset. For\u0000log-normal assets, the strategy learned by Onflow, with transaction costs at\u0000zero, mimics Markowitz's optimal portfolio and thus the best possible asset\u0000allocation strategy. Numerical experiments from the 'old NYSE' dataset show\u0000that Onflow leads to dynamic asset allocation strategies whose performances\u0000are: a) comparable to benchmark strategies such as Cover's Universal Portfolio\u0000or Helmbold et al. \"multiplicative updates\" approach when transaction costs are\u0000zero, and b) better than previous procedures when transaction costs are high.\u0000Onflow can even remain efficient in regimes where other dynamical allocation\u0000techniques do not work anymore. Therefore, as far as tested, Onflow appears to\u0000be a promising dynamic portfolio management strategy based on observed prices\u0000only and without any assumption on the laws of distributions of the underlying\u0000assets' returns. In particular it could avoid model risk when building a\u0000trading strategy.","PeriodicalId":501045,"journal":{"name":"arXiv - QuantFin - Portfolio Management","volume":"94 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138568467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A General Framework for Portfolio Construction Based on Generative Models of Asset Returns","authors":"Tuoyuan Cheng, Kan Chen","doi":"arxiv-2312.03294","DOIUrl":"https://doi.org/arxiv-2312.03294","url":null,"abstract":"In this paper, we present an integrated approach to portfolio construction\u0000and optimization, leveraging high-performance computing capabilities. We first\u0000explore diverse pairings of generative model forecasts and objective functions\u0000used for portfolio optimization, which are evaluated using\u0000performance-attribution models based on LASSO. We illustrate our approach using\u0000extensive simulations of crypto-currency portfolios, and we show that the\u0000portfolios constructed using the vine-copula generative model and the\u0000Sharpe-ratio objective function consistently outperform. To accommodate a wide\u0000array of investment strategies, we further investigate portfolio blending and\u0000propose a general framework for evaluating and combining investment strategies.\u0000We employ an extension of the multi-armed bandit framework and use value models\u0000and policy models to construct eclectic blended portfolios based on past\u0000performance. We consider similarity and optimality measures for value models\u0000and employ probability-matching (\"blending\") and a greedy algorithm\u0000(\"switching\") for policy models. The eclectic portfolios are also evaluated\u0000using LASSO models. We show that the value model utilizing cosine similarity\u0000and logit optimality consistently delivers robust superior performances. The\u0000extent of outperformance by eclectic portfolios over their benchmarks\u0000significantly surpasses that achieved by individual generative model-based\u0000portfolios over their respective benchmarks.","PeriodicalId":501045,"journal":{"name":"arXiv - QuantFin - Portfolio Management","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138548596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Striking the Balance: Life Insurance Timing and Asset Allocation in Financial Planning","authors":"An Chen, Giorgio Ferrari, Shihao Zhu","doi":"arxiv-2312.02943","DOIUrl":"https://doi.org/arxiv-2312.02943","url":null,"abstract":"This paper investigates the consumption and investment decisions of an\u0000individual facing uncertain lifespan and stochastic labor income within a\u0000Black-Scholes market framework. A key aspect of our study involves the agent's\u0000option to choose when to acquire life insurance for bequest purposes. We\u0000examine two scenarios: one with a fixed bequest amount and another with a\u0000controlled bequest amount. Applying duality theory and addressing free-boundary\u0000problems, we analytically solve both cases, and provide explicit expressions\u0000for value functions and optimal strategies in both cases. In the first\u0000scenario, where the bequest amount is fixed, distinct outcomes emerge based on\u0000different levels of risk aversion parameter $gamma$: (i) the optimal time for\u0000life insurance purchase occurs when the agent's wealth surpasses a critical\u0000threshold if $gamma in (0,1)$, or (ii) life insurance should be acquired\u0000immediately if $gamma>1$. In contrast, in the second scenario with a\u0000controlled bequest amount, regardless of $gamma$ values, immediate life\u0000insurance purchase proves to be optimal.","PeriodicalId":501045,"journal":{"name":"arXiv - QuantFin - Portfolio Management","volume":" 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138493516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Optimal dividend payout with path-dependent drawdown constraint","authors":"Chonghu Guan, Jiacheng Fan, Zuo Quan Xu","doi":"arxiv-2312.01668","DOIUrl":"https://doi.org/arxiv-2312.01668","url":null,"abstract":"This paper studies an optimal dividend payout problem with drawdown\u0000constraint in a Brownian motion model, where the dividend payout rate must be\u0000no less than a fixed proportion of its historical running maximum. It is a\u0000stochastic control problem, where the admissible control depends on its past\u0000values, thus is path-dependent. The related Hamilton-Jacobi-Bellman equation\u0000turns out to be a new type of two-dimensional variational inequality with\u0000gradient constraint, which has only been studied by viscosity solution\u0000technique in the literature. In this paper, we use delicate PDE methods to\u0000obtain a strong solution. Different from the viscosity solution, based on our\u0000solution, we succeed in deriving an optimal feedback payout strategy, which is\u0000expressed in terms of two free boundaries and the running maximum surplus\u0000process. Furthermore, we have obtained many properties of the value function\u0000and the free boundaries such as the boundedness, continuity etc. Numerical\u0000examples are presented as well to verify our theoretical results and give some\u0000new but not proved financial insights.","PeriodicalId":501045,"journal":{"name":"arXiv - QuantFin - Portfolio Management","volume":" 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138493476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zhi Chen, Zachary Feinstein, Ionut Florescu, Papa Momar Ndiaye
{"title":"Determining the Difference in Predictive Capabilities of ESG Raw Scores versus ESG Aggregated Scores on Annual Company Stock Returns And Volatility","authors":"Zhi Chen, Zachary Feinstein, Ionut Florescu, Papa Momar Ndiaye","doi":"arxiv-2312.00202","DOIUrl":"https://doi.org/arxiv-2312.00202","url":null,"abstract":"Investors are increasingly incorporating Environmental, Social, and\u0000Governance (ESG) ratings into their investment strategies to evaluate and\u0000manage potential risks and sustainability of companies. ESG ratings typically\u0000follow a hierarchical structure, where raw data points are progressively\u0000aggregated, leading to individual E, S, G scores and ultimately aggregating in\u0000a broad, consolidated ESG score. While many studies have investigated the\u0000relationship between stock performance and individual or overall ESG scores,\u0000few have used raw ESG data into their analyses. Therefore, this paper aims to\u0000explore the difference in predictive capabilities of ESG raw scores versus\u0000aggregated scores on annual company stock returns and volatility. Our findings\u0000reveal a trend where the predictive power is strongest at the raw data level,\u0000and it gradually weakens through successive stages of aggregation, with the\u0000overall scores exhibiting the weakest predictive capability. This result\u0000highlights the effectiveness of raw ESG data in capturing the complex dynamics\u0000between ESG factors and financial performance, making it the superior choice in\u0000further study.","PeriodicalId":501045,"journal":{"name":"arXiv - QuantFin - Portfolio Management","volume":"8 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138516966","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Portfolio Time Consistency and Utility Weighted Discount Rates","authors":"Oumar Mbodji, Traian A. Pirvu","doi":"arxiv-2402.05113","DOIUrl":"https://doi.org/arxiv-2402.05113","url":null,"abstract":"Merton portfolio management problem is studied in this paper within a\u0000stochastic volatility, non constant time discount rate, and power utility\u0000framework. This problem is time inconsistent and the way out of this\u0000predicament is to consider the subgame perfect strategies. The later are\u0000characterized through an extended Hamilton Jacobi Bellman (HJB) equation. A\u0000fixed point iteration is employed to solve the extended HJB equation. This is\u0000done in a two stage approach: in a first step the utility weighted discount\u0000rate is introduced and characterized as the fixed point of a certain operator;\u0000in the second step the value function is determined through a linear parabolic\u0000partial differential equation. Numerical experiments explore the effect of the\u0000time discount rate on the subgame perfect and precommitment strategies.","PeriodicalId":501045,"journal":{"name":"arXiv - QuantFin - Portfolio Management","volume":"29 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139758398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Discretization of continuous-time arbitrage strategies in financial markets with fractional Brownian motion","authors":"Kerstin Lamert, Benjamin R. Auer, Ralf Wunderlich","doi":"arxiv-2311.15635","DOIUrl":"https://doi.org/arxiv-2311.15635","url":null,"abstract":"This study evaluates the practical usefulness of continuous-time arbitrage\u0000strategies designed to exploit serial correlation in fractional financial\u0000markets. Specifically, we revisit the strategies of cite{Shiryaev1998} and\u0000cite{Salopek1998} and transfer them to a real-world setting by distretizing\u0000their dynamics and introducing transaction costs. In Monte Carlo simulations\u0000with various market and trading parameter settings, we show that both are\u0000highly promising with respect to terminal portfolio values and loss\u0000probabilities. These features and complementary sparsity make them valuable\u0000additions to the toolkit of quantitative investors.","PeriodicalId":501045,"journal":{"name":"arXiv - QuantFin - Portfolio Management","volume":"6 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138494884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Planning for the Efficient Updating of Mutual Fund Portfolios","authors":"Tomás de la Rosa","doi":"arxiv-2311.16204","DOIUrl":"https://doi.org/arxiv-2311.16204","url":null,"abstract":"Once there is a decision of rebalancing or updating a portfolio of funds, the\u0000process of changing the current portfolio to the target one, involves a set of\u0000transactions that are susceptible of being optimized. This is particularly\u0000relevant when managers have to handle the implications of different types of\u0000instruments. In this work we present linear programming and heuristic search\u0000approaches that produce plans for executing the update. The evaluation of our\u0000proposals shows cost improvements over the compared based strategy. The models\u0000can be easily extended to other realistic scenarios in which a holistic\u0000portfolio management is required","PeriodicalId":501045,"journal":{"name":"arXiv - QuantFin - Portfolio Management","volume":"6 7‐8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138494885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Information Content of Financial Youtube Channel: Case Study of 3PROTV and Korean Stock Market","authors":"HyeonJun Kim","doi":"arxiv-2311.15247","DOIUrl":"https://doi.org/arxiv-2311.15247","url":null,"abstract":"We investigate the information content of 3PROTV, a south Korean financial\u0000youtube channel. In our sample we found evidence for the hypothesis that the\u0000channel have information content on stock selection, but only on negative\u0000sentiment. Positively mentioned stock had pre-announcement spike followed by\u0000steep fall in stock price around announcement period. Negatively mentioned\u0000stock started underperforming around the announcement period, with\u0000underreaction dynamics in post-announcement period. In the area of market\u0000timing, we found that change of sentimental tone of 3PROTV than its historical\u0000average predicts the lead value of Korean market portfolio return. Its\u0000predictive power cannot be explained by future change in news sentiment, future\u0000short term interest rate, and future liquidity risk.","PeriodicalId":501045,"journal":{"name":"arXiv - QuantFin - Portfolio Management","volume":"6 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138494883","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}