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Macroscopic properties of equity markets: stylized facts and portfolio performance 股票市场的宏观属性:风格化事实与投资组合表现
Pub Date : 2024-09-17 DOI: arxiv-2409.10859
Steven Campbell, Qien Song, Ting-Kam Leonard Wong
Macroscopic properties of equity markets affect the performance of activeequity strategies but many are not adequately captured by conventional modelsof financial mathematics and econometrics. Using the CRSP Database of the USequity market, we study empirically several macroscopic properties defined interms of market capitalizations and returns, and highlight a list of stylizedfacts and open questions motivated in part by stochastic portfolio theory.Additionally, we present a systematic backtest of the diversity-weightedportfolio under various configurations and study its performance in relation tomacroscopic quantities. All of our results can be replicated using codes madeavailable on our GitHub repository.
股票市场的宏观属性会影响主动股票策略的表现,但金融数学和计量经济学的传统模型并未充分反映其中的许多属性。利用美国股票市场的 CRSP 数据库,我们对定义为市值和回报的几个宏观属性进行了实证研究,并强调了一系列风格化事实和开放性问题,这些问题的部分动机来自随机投资组合理论。此外,我们还对各种配置下的多样性加权投资组合进行了系统性回溯测试,并研究了其与宏观数量相关的表现。我们的所有结果都可以通过 GitHub 存储库中的代码进行复制。
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引用次数: 0
Tuning into Climate Risks: Extracting Innovation from TV News for Clean Energy Firms 关注气候风险:为清洁能源企业从电视新闻中提取创新灵感
Pub Date : 2024-09-13 DOI: arxiv-2409.08701
Wasim Ahmad, Mohammad Arshad Rahman, Suruchi Shrimali, Preeti Roy
This article develops multiple novel climate risk measures (or variables)based on the television news coverage by Bloomberg, CNBC, and Fox Business, andexamines how they affect the systematic and idiosyncratic risks of clean energyfirms in the United States (US). The measures are built on climate relatedkeywords and cover the volume of coverage, type of coverage (climate crisis,renewable energy, and government and human initiatives), and media sentiments.We show that an increase in the aggregate measure of climate risk, as indicatedby coverage volume, reduces idiosyncratic risk while increasing systematicrisk. When climate risk is segregated, we find that systematic risk ispositively affected by the textit{physical risk} of climate crises andtextit{transition risk} from government and human initiatives, but no suchimpact is evident for idiosyncratic risk. Additionally, we observe an asymmetryin risk behavior: negative sentiments tend to increase idiosyncratic risk anddecrease systematic risk, while positive sentiments have no significant impact.This asymmetry persists even when considering print media variables, climatepolicy uncertainty, and analysis based on the COVID-19 period.
本文以彭博社、CNBC 和福克斯商业频道的电视新闻报道为基础,提出了多种新的气候风险衡量标准(或变量),并探讨了它们如何影响美国清洁能源企业的系统性风险和特异性风险。我们的研究结果表明,增加气候风险的综合衡量标准(如报道量所示)可降低特异性风险,同时增加系统性风险。当对气候风险进行分类时,我们发现系统性风险受到气候危机的(textit{物理风险})和来自政府和人类举措的(textit{过渡风险})的积极影响,但对特异性风险没有明显的影响。此外,我们还观察到风险行为的不对称性:消极情绪往往会增加特异性风险,降低系统性风险,而积极情绪则没有显著影响。即使考虑到印刷媒体变量、气候政策的不确定性以及基于 COVID-19 期间的分析,这种不对称性仍然存在。
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引用次数: 0
On the macroeconomic fundamentals of long-term volatilities and dynamic correlations in COMEX copper futures 论 COMEX 铜期货长期波动率和动态相关性的宏观经济基本要素
Pub Date : 2024-09-12 DOI: arxiv-2409.08355
Zian Wang, Xinshu Li
This paper examines the influence of low-frequency macroeconomic variables onthe high-frequency returns of copper futures and the long-term correlation withthe S&P 500 index, employing GARCH-MIDAS and DCC-MIDAS modeling frameworks. Theestimated results of GARCH-MIDAS show that realized volatility (RV), level ofinterest rates (IR), industrial production (IP) and producer price index (PPI),volatility of Slope, PPI, consumer sentiment index (CSI), and dollar index (DI)have significant impacts on Copper futures returns, among which PPI is the mostefficient macroeconomic variable. From comparison among DCC-GARCH and DCC-MIDASmodel, the added MIDAS filter of PPI improves the model fitness and have betterperformance than RV in effecting the long-run relationship between Copperfutures and S&P 500.
本文采用 GARCH-MIDAS 和 DCC-MIDAS 模型框架,研究了低频宏观经济变量对铜期货高频回报率的影响,以及铜期货与标准普尔 500 指数的长期相关性。GARCH-MIDAS的估计结果表明,已实现波动率(RV)、利率水平(IR)、工业生产(IP)和生产者价格指数(PPI)、斜率波动率、PPI、消费者情绪指数(CSI)和美元指数(DI)对期铜收益率有显著影响,其中PPI是最有效的宏观经济变量。从 DCC-GARCH 模型和 DCC-MIDAS 模型的比较来看,添加 PPI 的 MIDAS 滤波提高了模型的拟合度,在影响铜期货和标准普尔 500 指数的长期关系方面比 RV 有更好的表现。
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引用次数: 0
Market information of the fractional stochastic regularity model 分数随机正则模型的市场信息
Pub Date : 2024-09-11 DOI: arxiv-2409.07159
Daniele Angelini, Matthieu Garcin
The Fractional Stochastic Regularity Model (FSRM) is an extension ofBlack-Scholes model describing the multifractal nature of prices. It is basedon a multifractional process with a random Hurst exponent $H_t$, driven by afractional Ornstein-Uhlenbeck (fOU) process. When the regularity parameter$H_t$ is equal to $1/2$, the efficient market hypothesis holds, but when$H_tneq 1/2$ past price returns contain some information on a future trend ormean-reversion of the log-price process. In this paper, we investigate someproperties of the fOU process and, thanks to information theory and Shannon'sentropy, we determine theoretically the serial information of the regularityprocess $H_t$ of the FSRM, giving some insight into one's ability to forecastfuture price increments and to build statistical arbitrages with this model.
分数随机正则模型(FSRM)是布莱克-斯科尔斯(Black-Scholes)模型的扩展,描述了价格的多分性。它基于一个具有随机赫斯特指数 $H_t$ 的多分形过程,由分形奥恩斯坦-乌伦贝克(fOU)过程驱动。当规律性参数$H_t$等于1/2$时,有效市场假说成立,但当$H_t/neq为1/2$时,过去的价格回报包含了对数价格过程未来趋势或均值反转的一些信息。在本文中,我们研究了 fOU 过程的一些特性,并借助信息论和香农熵,从理论上确定了 FSRM 的正则过程 $H_t$ 的序列信息,从而对预测未来价格增量和利用该模型建立统计套利的能力有了一定的了解。
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引用次数: 0
Critical Dynamics of Random Surfaces 随机表面的临界动力学
Pub Date : 2024-09-09 DOI: arxiv-2409.05547
Christof Schmidhuber
Conformal field theories with central charge $cle1$ on random surfaces havebeen extensively studied in the past. Here, this discussion is extended fromtheir equilibrium distribution to their critical dynamics. This is motivated bythe conjecture that these models describe the time evolution of certain socialnetworks that are self-driven to a critical point. The time evolution of thesurface area is identified as a Cox Ingersol Ross process. Planar surfacesshrink, while higher genus surfaces grow until the cosmological constant stopstheir growth. Three different equilibrium states are distingushed, dominated by(i) small planar surfaces, (ii) large surfaces with high but finite genus, and(iii) foamy surfaces, whose genus diverges. Time variations of the orderparameter are analyzed and are found to have generalized hyperbolicdistributions. In state (i), those have power law tails with a tail index closeto 4. Analogies between the time evolution of the order parameter and amultifractal random walk are also pointed out.
过去曾对随机表面上具有中心电荷 $cle1$ 的共形场论进行过广泛的研究。在这里,讨论从它们的平衡分布扩展到它们的临界动力学。这是出于这样一个猜想:这些模型描述了某些社会网络自驱动到临界点的时间演化。表面积的时间演化被认为是一个考克斯-英格索尔-罗斯过程。平面表面缩小,而高属表面增长,直到宇宙常数阻止其增长。研究发现了三种不同的平衡状态:(i) 较小的平面表面;(ii) 高属但有限的大表面;(iii) 属发散的泡沫表面。分析发现,阶参数的时间变化具有广义双曲分布。还指出了阶次参数的时间演化与多分形随机行走之间的类比关系。
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引用次数: 0
Comparative Study of Long Short-Term Memory (LSTM) and Quantum Long Short-Term Memory (QLSTM): Prediction of Stock Market Movement 长短期记忆(LSTM)与量子长短期记忆(QLSTM)的比较研究:预测股市走势
Pub Date : 2024-09-04 DOI: arxiv-2409.08297
Tariq Mahmood, Ibtasam Ahmad, Malik Muhammad Zeeshan Ansar, Jumanah Ahmed Darwish, Rehan Ahmad Khan Sherwani
In recent years, financial analysts have been trying to develop models topredict the movement of a stock price index. The task becomes challenging invague economic, social, and political situations like in Pakistan. In thisstudy, we employed efficient models of machine learning such as long short-termmemory (LSTM) and quantum long short-term memory (QLSTM) to predict the KarachiStock Exchange (KSE) 100 index by taking monthly data of twenty-six economic,social, political, and administrative indicators from February 2004 to December2020. The comparative results of LSTM and QLSTM predicted values of the KSE 100index with the actual values suggested QLSTM a potential technique to predictstock market trends.
近年来,金融分析师一直在努力开发预测股价指数走势的模型。在巴基斯坦这样的经济、社会和政治局势下,这项任务变得极具挑战性。在这项研究中,我们采用了高效的机器学习模型,如长短时记忆(LSTM)和量子长短时记忆(QLSTM),通过 2004 年 2 月至 2020 年 12 月期间 26 个经济、社会、政治和行政指标的月度数据来预测卡拉奇证券交易所(KSE)100 指数。LSTM 和 QLSTM 预测的 KSE 100 指数值与实际值的比较结果表明,QLSTM 是一种预测股市趋势的潜在技术。
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引用次数: 0
Predicting Foreign Exchange EUR/USD direction using machine learning 利用机器学习预测外汇欧元/美元走向
Pub Date : 2024-09-04 DOI: arxiv-2409.04471
Kevin Cedric Guyard, Michel Deriaz
The Foreign Exchange market is a significant market for speculators,characterized by substantial transaction volumes and high volatility.Accurately predicting the directional movement of currency pairs is essentialfor formulating a sound financial investment strategy. This paper conducts acomparative analysis of various machine learning models for predicting thedaily directional movement of the EUR/USD currency pair in the Foreign Exchangemarket. The analysis includes both decorrelated and non-decorrelated featuresets using Principal Component Analysis. Additionally, this study exploresmeta-estimators, which involve stacking multiple estimators as input foranother estimator, aiming to achieve improved predictive performance.Ultimately, our approach yielded a prediction accuracy of 58.52% for one-dayahead forecasts, coupled with an annual return of 32.48% for the year 2022.
外汇市场是投机者的重要市场,具有交易量大、波动性高的特点。准确预测货币对的方向性走势对于制定合理的金融投资策略至关重要。本文对各种机器学习模型进行了比较分析,以预测外汇市场中欧元/美元货币对的每日方向性走势。分析包括使用主成分分析法的装饰相关和非装饰相关特征集。此外,本研究还探索了meta估计器,其中涉及将多个估计器作为另一个估计器的输入进行堆叠,以达到提高预测性能的目的。最终,我们的方法得出了58.52%的提前一天预测准确率,以及2022年32.48%的年回报率。
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引用次数: 0
Evolving Dynamics: Bibliometric Insights into the Economics of the EU ETS Market 不断发展的动力:对欧盟排放交易计划市场经济的文献计量学启示
Pub Date : 2024-09-03 DOI: arxiv-2409.01739
Cristiano Salvagnin
This study aims to map the scientific production on the European UnionEmissions Trading System (EU ETS) market from 2004 to 2024. By analyzingresearch articles collected from the Scopus database, this bibliometric reviewprovides a comprehensive overview of the academic landscape surrounding the EUETS. Utilizing the Bibliometrix package in R, we conducted an in-depth analysisof publication trends, key research themes, influential authors, and prominentjournals in the field. Our findings reveal significant growth in scholarlyinterest, with notable peaks corresponding to major policy updates and economicevents. The analysis highlights the most cited works and collaborativenetworks, offering insights into the evolution of research topics over the pasttwo decades. This review serves as a valuable resource for researchers andpolicymakers, providing a detailed understanding of the academic contributionsto the EU ETS market and identifying emerging trends and gaps in theliterature. Through this bibliometric approach, we offer a nuanced perspectiveon the development and impact of the EU ETS in the context of global carbonmarkets and climate policy.
本研究旨在描绘 2004 年至 2024 年欧盟排放交易体系(EU ETS)市场的科研成果。通过分析 Scopus 数据库中收集的研究文章,本文献计量学综述提供了围绕欧盟排放交易体系的学术概况。利用 R 中的 Bibliometrix 软件包,我们对该领域的出版趋势、关键研究主题、有影响力的作者和著名期刊进行了深入分析。我们的研究结果揭示了学术兴趣的显著增长,其中与重大政策更新和经济事件相对应的是明显的峰值。分析强调了被引用次数最多的作品和合作网络,提供了对过去二十年研究课题演变的见解。本综述为研究人员和政策制定者提供了宝贵的资源,让他们详细了解学术界对欧盟排放交易计划市场的贡献,并确定文献中的新趋势和空白。通过这种文献计量方法,我们在全球碳市场和气候政策的背景下,对欧盟排放交易计划的发展和影响提供了一个细致入微的视角。
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引用次数: 0
Kullback-Leibler cluster entropy to quantify volatility correlation and risk diversity 库尔巴克-莱伯勒聚类熵量化波动相关性和风险多样性
Pub Date : 2024-09-01 DOI: arxiv-2409.10543
L. Ponta, A. Carbone
The Kullback-Leibler cluster entropy $mathcal{D_{C}}[P | Q] $ is evaluatedfor the empirical and model probability distributions $P$ and $Q$ of theclusters formed in the realized volatility time series of five assets (SP&500,NASDAQ, DJIA, DAX, FTSEMIB). The Kullback-Leibler functional $mathcal{D_{C}}[P| Q] $ provides complementary perspectives about the stochastic volatilityprocess compared to the Shannon functional $mathcal{S_{C}}[P]$. While$mathcal{D_{C}}[P | Q] $ is maximum at the short time scales,$mathcal{S_{C}}[P]$ is maximum at the large time scales leading tocomplementary optimization criteria tracing back respectively to the maximumand minimum relative entropy evolution principles. The realized volatility ismodelled as a time-dependent fractional stochastic process characterized bypower-law decaying distributions with positive correlation ($H>1/2$). As a casestudy, a multiperiod portfolio built on diversity indexes derived from theKullback-Leibler entropy measure of the realized volatility. The portfolio isrobust and exhibits better performances over the horizon periods. A comparisonwith the portfolio built either according to the uniform distribution or in theframework of the Markowitz theory is also reported.
针对五种资产(SP/&500、NASDAQ、DJIA、DAX、FTSEMIB)的已实现波动率时间序列中形成的簇的经验和模型概率分布 $P$ 和 $Q$,评估了库尔巴克-莱布勒簇熵 $mathcal{D_{C}}[P | Q] $。与香农函数 $mathcal{S_{C}}[P]$ 相比,Kullback-Leibler 函数 $mathcal{D_{C}}[P| Q] $ 为随机波动过程提供了互补的视角。虽然 $mathcal{D_{C}}[P | Q] $ 在短时间尺度上是最大的,$mathcal{S_{C}}[P]$ 在大时间尺度上是最大的,从而导致互补的优化标准分别追溯到最大和最小相对熵演化原理。已实现的波动率被模拟为一个随时间变化的分数随机过程,其特征是具有正相关性的幂律衰减分布($H>1/2$)。作为案例研究,一个多周期投资组合建立在从已实现波动率的库尔巴克-莱伯勒熵度量得出的多样性指数上。该投资组合是稳健的,并且在各期限内表现较好。报告还比较了根据均匀分布或马科维茨理论框架建立的投资组合。
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引用次数: 0
State-Space Dynamic Functional Regression for Multicurve Fixed Income Spread Analysis and Stress Testing 用于多曲线固定收益利差分析和压力测试的状态空间动态函数回归
Pub Date : 2024-08-31 DOI: arxiv-2409.00348
Peilun He, Gareth W. Peters, Nino Kordzakhiac, Pavel V. Shevchenko
The Nelson-Siegel model is widely used in fixed income markets to produceyield curve dynamics. The multiple time-dependent parameter model convenientlyaddresses the level, slope, and curvature dynamics of the yield curves. In thisstudy, we present a novel state-space functional regression model thatincorporates a dynamic Nelson-Siegel model and functional regressionformulations applied to multi-economy setting. This framework offers distinctadvantages in explaining the relative spreads in yields between a referenceeconomy and a response economy. To address the inherent challenges of modelcalibration, a kernel principal component analysis is employed to transform therepresentation of functional regression into a finite-dimensional, tractableestimation problem. A comprehensive empirical analysis is conducted to assessthe efficacy of the functional regression approach, including an in-sampleperformance comparison with the dynamic Nelson-Siegel model. We conducted thestress testing analysis of yield curves term-structure within a dual economyframework. The bond ladder portfolio was examined through a case study focusedon spread modelling using historical data for US Treasury and UK bonds.
Nelson-Siegel 模型被广泛应用于固定收益市场的收益率曲线动态分析。这种多时间参数模型可以方便地处理收益率曲线的水平、斜率和曲率动态。在本研究中,我们提出了一个新颖的状态空间函数回归模型,该模型将动态 Nelson-Siegel 模型和函数回归公式结合起来,应用于多经济体环境。这一框架在解释参照经济体和响应经济体之间收益率的相对利差方面具有明显的优势。为了解决模型校准的固有难题,我们采用了核主成分分析法,将函数回归的表述转化为有限维度的可控估计问题。我们进行了全面的实证分析,以评估函数回归方法的有效性,包括与动态 Nelson-Siegel 模型的样本内性能比较。我们在二元经济框架内对收益率曲线的期限结构进行了压力测试分析。我们利用美国国债和英国债券的历史数据,通过以利差建模为重点的案例研究,对债券阶梯组合进行了检验。
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引用次数: 0
期刊
arXiv - QuantFin - Statistical Finance
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