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The economic value of equity implied volatility forecasting with machine learning 用机器学习预测股票隐含波动率的经济价值
IF 2.1 2区 经济学 Q2 BUSINESS, FINANCE Pub Date : 2025-06-01 Epub Date: 2025-05-06 DOI: 10.1016/j.jempfin.2025.101618
Paul Borochin , Yanhui Zhao
We evaluate the importance of nonlinear and interactive effects in implied volatility innovation forecasting by comparing the performance of machine learning models that can search for interactive effects relative to classical ones that cannot, measuring the economic significance of these predictions in cross-sectional and time series pricing tests of delta-hedged option returns. Machine learning models offer superior out of sample performance. Since the predictive variables are the same across all models, these performance differences likely capture the value of nonlinear and interactive effects in implied volatility forecasts. Our results are robust to look-ahead bias and model overfitting.
我们通过比较机器学习模型的性能来评估非线性和交互效应在隐含波动率创新预测中的重要性,机器学习模型可以搜索相对于经典模型的交互效应,并在delta对冲期权收益的横截面和时间序列定价测试中衡量这些预测的经济意义。机器学习模型提供了卓越的样本外性能。由于预测变量在所有模型中都是相同的,这些性能差异可能捕捉到隐含波动率预测中非线性和交互效应的价值。我们的结果对前视偏差和模型过拟合具有鲁棒性。
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引用次数: 0
A system of time-varying models for predictive regressions 用于预测回归的时变模型系统
IF 2.1 2区 经济学 Q2 BUSINESS, FINANCE Pub Date : 2025-06-01 Epub Date: 2025-05-13 DOI: 10.1016/j.jempfin.2025.101622
Deshui Yu , Yayi Yan
This paper proposes a system of time-varying models for predictive regressions, where a time-varying autoregressive (TV-AR) process is introduced to model the dynamics of the predictors and a linear control function approach is used to improve the estimation efficiency. We employ a profile likelihood estimation method to estimate both constant and time-varying coefficients and propose a hypothesis test to examine the parameter stability. We establish the asymptotic properties of the proposed estimators and test statistics accordingly. Monte Carlo simulations show that the proposed methods work well in finite samples. Empirically, the TV-AR process effectively approximates the time-series behavior of a broad set of potential predictors. Furthermore, we reject the stability assumption of predictive models for more than half of these predictors. Finally, the linear projection method not only improves estimator efficiency but also enhances out-of-sample forecasting performance, leading to significant utility gains in forecasting experiments.
本文提出了一种时变预测回归模型系统,其中引入时变自回归(TV-AR)过程来对预测器的动态建模,并采用线性控制函数方法来提高估计效率。我们采用轮廓似然估计方法来估计常数和时变系数,并提出假设检验来检验参数的稳定性。我们建立了所提估计量的渐近性质,并相应地检验了统计量。蒙特卡罗仿真结果表明,该方法在有限样本情况下效果良好。根据经验,TV-AR过程有效地近似于一组广泛的潜在预测因子的时间序列行为。此外,我们拒绝超过一半的这些预测因子的预测模型的稳定性假设。最后,线性投影方法不仅提高了估计器的效率,而且提高了样本外预测性能,在预测实验中获得了显著的效用增益。
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引用次数: 0
Unlocking efficiency: How capital market liberalization shapes firm productivity 解锁效率:资本市场自由化如何塑造企业生产率
IF 2.1 2区 经济学 Q2 BUSINESS, FINANCE Pub Date : 2025-06-01 Epub Date: 2025-05-14 DOI: 10.1016/j.jempfin.2025.101624
Lu Jolly Zhou , Nan Deng , Chenchen Li
This study examines the granular impact of capital market liberalization on the real economy, utilizing the distinctive context of the Chinese market as a quasi-natural experimental setting. Our analysis demonstrates that capital market liberalization positively influences firm-level productivity. We further explore the mechanisms and provide empirical evidence that capital market liberalization improves asset pricing efficiency by enhancing informed trading effectiveness and rectifying stock mispricing. It also optimizes corporate governance from four distinct perspectives: mitigating agency costs, augmenting operational profitability, bolstering labor productivity, and enhancing transparency. These factors collectively contribute to improved productivity at the firm level, confirming the granular impact of financial liberalization in the product market.
本研究考察了资本市场自由化对实体经济的微观影响,利用中国市场的独特背景作为准自然实验环境。我们的分析表明,资本市场自由化正影响企业层面的生产率。我们进一步探讨了机制,并提供了实证证据,证明资本市场自由化通过提高知情交易有效性和纠正股票错误定价来提高资产定价效率。它还从四个不同的角度优化公司治理:降低代理成本、提高运营盈利能力、提高劳动生产率和提高透明度。这些因素共同有助于提高企业一级的生产率,证实了金融自由化对产品市场的细微影响。
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引用次数: 0
Exploring the non-linear dynamics between Commercial Real Estate and systemic risk 探讨商业地产与系统性风险之间的非线性动态关系
IF 2.1 2区 经济学 Q2 BUSINESS, FINANCE Pub Date : 2025-06-01 Epub Date: 2025-03-07 DOI: 10.1016/j.jempfin.2025.101607
George Kladakis , Nicole Lux , Alexandros Skouralis
The commercial real estate (CRE) market significantly influences financial stability, given its size, use as collateral, and cyclicality. This study explores macro-financial vulnerabilities arising from the CRE market, revealing that adverse developments in CRE capital values amplify systemic risk across financial sub-sectors, namely, banks, insurance companies and investment trusts, consistent with the collateral channel hypothesis. The CRE and financial markets relationship, however, displays nonlinearities. We introduce a UK CRE Misalignment index which integrates various market indicators to assess deviations from fundamental values in the CRE sector. We find that during market misalignments, the link between systemic risk and CRE growth weakens, suggesting that further property price increases in an overheated market could lead to a bubble and heightened systemic risk, in line with the deviation hypothesis. Finally, we employ a quantile regression model that captures another aspect of this non-linear relationship. We find that positive (negative) developments in the CRE market decrease (increase) the right tail of the historical systemic risk distribution, but CRE variation has a weak impact on the left tail and cannot effectively reduce systemic risk in periods of growth.
商业房地产(CRE)市场显著影响金融稳定,因为它的规模,用作抵押品,和周期性。本研究探讨了商业地产市场产生的宏观金融脆弱性,揭示了商业地产资本价值的不利发展放大了金融子行业(即银行、保险公司和投资信托公司)的系统性风险,这与抵押品渠道假设相一致。然而,CRE和金融市场的关系表现出非线性。我们介绍了英国商业地产失调指数,该指数整合了各种市场指标,以评估商业地产行业偏离基本价值的情况。我们发现,在市场失调期间,系统性风险与CRE增长之间的联系减弱,这表明在过热的市场中,房地产价格的进一步上涨可能导致泡沫和系统性风险加剧,符合偏差假设。最后,我们采用了一个分位数回归模型来捕捉这种非线性关系的另一个方面。我们发现,CRE市场的积极(消极)发展减少(增加)了历史系统性风险分布的右尾,但CRE变化对左尾的影响较弱,不能有效地降低增长时期的系统性风险。
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引用次数: 0
Maxing out short-term reversals in weekly stock returns 使每周股票收益的短期逆转最大化
IF 2.1 2区 经济学 Q2 BUSINESS, FINANCE Pub Date : 2025-06-01 Epub Date: 2025-03-15 DOI: 10.1016/j.jempfin.2025.101608
Chen Chen , Andrew Cohen , Qiqi Liang , Licheng Sun
Subrahmanyam (1991) presents a model in which increased variance in liquidity trades reduces price efficiency when market makers are risk-averse. Motivated by this theoretical insight, we hypothesize that pent-up demand from lottery-seeking investors amplifies their overreactions to news, leading to larger short-term return reversals. Consistent with this hypothesis, we identify a significant pattern in weekly U.S. stock returns for lottery-like stocks, defined by high recent maximum daily returns (MAX). Specifically, high-MAX stocks that were past 1-week losers (or winners) exhibit notably positive (or negative) returns in the following week. Applying a short-term reversal strategy to high-MAX stocks generates an average weekly return of 1.66%, significantly outperforming the 0.65% return from the same strategy applied to low-MAX stocks. This result remains robust even after controlling for market microstructure biases and survives a series of robustness tests. Interestingly, the MAX-enhanced reversal strategy proves effective only when retail order imbalance is in the highest quintile. This result holds across both value-weighted and equal-weighted portfolios, underscoring the pivotal role of retail investors. Taken together, our findings highlight a new channel through which retail investors’ preference for lottery-like payoffs amplifies their overreactions, enhancing the profitability of short-term reversal strategies.
Subrahmanyam(1991)提出了一个模型,在该模型中,当做市商厌恶风险时,流动性交易的方差增加会降低价格效率。在这一理论见解的推动下,我们假设寻求彩票的投资者被压抑的需求放大了他们对新闻的过度反应,导致更大的短期回报逆转。与这一假设相一致,我们确定了彩票类股票的每周美国股票回报的显著模式,由近期最高日回报(MAX)定义。具体来说,高max股票在过去一周是输家(或赢家),在接下来的一周表现出显著的正(或负)回报。将短期反转策略应用于高max股票的平均周回报率为1.66%,显著优于应用于低max股票的相同策略的0.65%的回报率。即使在控制了市场微观结构偏差之后,这个结果仍然是稳健性的,并且经受住了一系列稳健性测试。有趣的是,max增强逆转策略仅在零售订单失衡处于最高五分位数时证明有效。这一结果适用于价值加权和等加权投资组合,强调了散户投资者的关键作用。综上所述,我们的研究结果突出了一个新的渠道,通过这个渠道,散户投资者对彩票类收益的偏好放大了他们的过度反应,增强了短期逆转策略的盈利能力。
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引用次数: 0
Forecasting financial volatility: An approach based on Parkinson volatility measure with long memory stochastic range model 金融波动预测:基于长记忆随机区间模型的帕金森波动测度方法
IF 2.1 2区 经济学 Q2 BUSINESS, FINANCE Pub Date : 2025-06-01 Epub Date: 2025-05-05 DOI: 10.1016/j.jempfin.2025.101617
Zhi De Khoo , Kok Haur Ng , You Beng Koh , Kooi Huat Ng
This paper proposes a long memory stochastic range (LMSR) model to investigate the persistence of range-based volatility series. The latent variable in the LMSR model is derived from the established autoregressive fractionally integrated moving average process. To estimate the model parameters, there is no closed-form solution for the latent process. Hence, the parameters of the stochastic model are estimated by applying the quasi-maximum likelihood method via the Whittle approximation. A comprehensive simulation study assesses the method’s performance, with results showing that estimated parameters are close to true values and precision improves with longer simulated time series lengths. To demonstrate the applicability of the model, we conducted empirical studies based on four financial assets, and their volatilities are estimated directly using the range-based Parkinson (PK) volatility measure. The results show evidence of long memory in these volatility series using the rescaled range and Geweke-Porter-Hudak methods. We fit the resulting PK volatility estimates to the LMSR model and other competing volatility models, and their modelling performances are compared. Results indicate that all LMSR models outperform competitors according to the log-likelihood and Akaike information criterion as well as out-of-sample loss functions. Additionally, the estimated parameters of these LMSR models confirm the presence of long memory, while competing short memory models struggle to capture the persistent nature of volatility in financial markets.
本文提出了一个长记忆随机极差(LMSR)模型来研究基于极差的波动率序列的持久性。LMSR模型的潜变量来源于已建立的自回归分数积分移动平均过程。为了估计模型参数,隐过程没有封闭解。因此,采用拟极大似然方法通过惠特尔近似估计随机模型的参数。综合仿真研究评估了该方法的性能,结果表明估计参数接近真实值,并且随着模拟时间序列长度的增加,精度有所提高。为了证明模型的适用性,我们基于四种金融资产进行了实证研究,并使用基于区间的帕金森(PK)波动率测度直接估计了它们的波动率。使用重新标度的范围和Geweke-Porter-Hudak方法,结果显示这些波动率序列具有长记忆的证据。我们将得到的PK波动率估计拟合到LMSR模型和其他竞争波动率模型中,并比较了它们的建模性能。结果表明,根据对数似然和赤池信息准则以及样本外损失函数,所有LMSR模型都优于竞争对手。此外,这些LMSR模型的估计参数证实了长记忆的存在,而竞争的短记忆模型难以捕捉金融市场波动的持久性。
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引用次数: 0
The role of macro-finance factors in predicting stock market volatility: A latent threshold dynamic model 宏观金融因素在股票市场波动预测中的作用:一个潜在阈值动态模型
IF 2.1 2区 经济学 Q2 BUSINESS, FINANCE Pub Date : 2025-06-01 Epub Date: 2025-05-07 DOI: 10.1016/j.jempfin.2025.101620
John M. Maheu , Azam Shamsi Zamenjani
Measuring, modeling, and forecasting volatility are of great importance in financial applications such as asset pricing, portfolio management, and risk management. In this paper, we investigate predictability of stock market volatility by macro-finance variables in a dynamic regression framework using latent thresholding. The latent threshold models allow data-driven shrinkage of regression coefficients by collapsing them to zero for irrelevant predictor variables and allowing for time-varying nonzero coefficients when supported by the data. This is a parsimonious framework which selects what potential predictor variables should be included in the regressions and when. We extend this model to allow for stochastic volatility for realized volatility innovations and discuss Bayesian estimation methods. We apply the models to monthly S&P 500 and NASDAQ 100 volatility and find that using macro-finance variables in volatility forecasts enhances model performance statistically and economically, particularly when we allow for dynamic inclusion/exclusion of these variables.
测量、建模和预测波动性在诸如资产定价、投资组合管理和风险管理等金融应用中非常重要。本文利用潜在阈值法在动态回归框架下研究宏观金融变量对股票市场波动的可预测性。潜在阈值模型允许数据驱动的回归系数收缩,通过将不相关的预测变量压缩为零,并在数据支持下允许时变的非零系数。这是一个简洁的框架,选择哪些潜在的预测变量应该包括在回归和何时。我们扩展了这个模型,以允许实现波动率创新的随机波动,并讨论了贝叶斯估计方法。我们将模型应用于标准普尔500指数和纳斯达克100指数的月度波动,发现在波动率预测中使用宏观金融变量可以提高模型在统计和经济上的表现,特别是当我们允许动态包含/排除这些变量时。
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引用次数: 0
The rise of venture capital and IPO quality 风险投资的兴起与IPO质量
IF 2.1 2区 经济学 Q2 BUSINESS, FINANCE Pub Date : 2025-06-01 Epub Date: 2025-04-02 DOI: 10.1016/j.jempfin.2025.101613
Amrita Nain , Jie Ying , Joseph Arthur
We show that an increase in the supply of venture capital (VC) leads to a decline in the quality of firms going public. We argue that due to VC selectivity, private capital flows disproportionately to the most promising firms causing them to hold back from public issuance. Post-IPO abnormal returns indicate that the stock market does not fully incorporate this decline in quality at the time of the IPO. Our research adds to recent evidence on the negative impact of fast-growing private markets on Main Street investors.
研究表明,风险资本供给的增加导致上市公司质量的下降。我们认为,由于风险投资的选择性,私人资本不成比例地流向最有前途的公司,导致它们不愿公开发行。IPO后的异常回报表明,在IPO时,股票市场并没有完全消化这种质量下降。我们的研究进一步证明了快速增长的私人市场对普通投资者的负面影响。
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引用次数: 0
Creating value through corporate social responsibility: The role of foreign institutional investors in Chinese listed firms 通过企业社会责任创造价值:境外机构投资者在中国上市公司中的作用
IF 2.1 2区 经济学 Q2 BUSINESS, FINANCE Pub Date : 2025-06-01 Epub Date: 2025-04-26 DOI: 10.1016/j.jempfin.2025.101621
Yunhe Li , Yu Liu , Mihail Miletkov , Tina Yang
This study examines the interplay between two major global trends—the growing role of foreign institutional ownership (FIO) due to financial liberalization and the rise of corporate social responsibility (CSR) as an investment ethos. We choose the setting of China, the world’s second-largest economy that has recently experienced substantial growth in foreign portfolio investment and increased its commitment to CSR. We document that CSR performance significantly influences the portfolio allocation decisions of certain types of FIO. Crucially, our analysis reveals that firms with a higher level of ownership by foreign institutional investors are associated with a more positive relation between CSR performance and firm value. This finding is robust to endogeneity examinations, including quasi-natural experiments and instrumental variable estimations. The finding is stronger for non-state-owned enterprises, firms with higher customer awareness, firms with more foreign directors, and firms with more frequent corporate site visits from FIO. Monitoring and advising are two likely channels through which FIO enhance the CSR-value relation. Finally, we demonstrate that FIO enhance firms’ ability to harness the power of CSR as a driver of innovation.
本研究考察了两种主要全球趋势之间的相互作用——由于金融自由化,外资机构所有权(FIO)的作用日益增强,以及企业社会责任(CSR)作为一种投资精神的兴起。我们选择的背景是中国,这个世界第二大经济体最近经历了海外证券投资的大幅增长,并加大了对企业社会责任的承诺。我们证明了企业社会责任绩效显著影响某些类型的投资组合配置决策。至关重要的是,我们的分析显示,外国机构投资者持股水平越高的公司,其社会责任绩效与公司价值之间的关系越积极。这一发现是稳健的内生性检查,包括准自然实验和工具变量估计。这一发现在非国有企业、客户认知度较高的企业、拥有更多外国董事的企业以及FIO更频繁访问企业的企业中更为明显。监测和建议是FIO加强企业社会责任与价值关系的两个可能渠道。最后,我们证明了企业自主创新增强了企业利用企业社会责任作为创新驱动力的能力。
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引用次数: 0
Regulatory fragmentation and corporate innovation 监管碎片化和企业创新
IF 2.1 2区 经济学 Q2 BUSINESS, FINANCE Pub Date : 2025-06-01 Epub Date: 2025-04-17 DOI: 10.1016/j.jempfin.2025.101614
Hongkang Xu
Using a distinctive measure derived from the Federal Register, this study examines the relation between regulatory fragmentation and corporate innovation. While regulatory fragmentation is commonly perceived as a barrier due to increased compliance costs and operational complexities, I find a significant positive association between regulatory fragmentation and innovation outputs, a result that remains consistent across various robustness tests. This effect is particularly pronounced in older firms, those with considerable regulatory influence, large market shares, and firms operating in similar regulatory environments. The results challenge the predominantly negative perceptions surrounding regulatory fragmentation in policy discussions, highlighting its potential to significantly enhance a firm’s innovative capabilities.
本研究采用来自《联邦公报》的独特衡量标准,考察了监管碎片化与企业创新之间的关系。虽然由于合规成本增加和操作复杂性,监管碎片化通常被视为一种障碍,但我发现监管碎片化与创新产出之间存在显著的正相关关系,这一结果在各种稳健性测试中保持一致。这种效应在老公司中尤其明显,这些公司具有相当大的监管影响力,市场份额大,以及在类似监管环境中运营的公司。研究结果挑战了政策讨论中围绕监管碎片化的主要负面看法,强调了其显著提高公司创新能力的潜力。
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引用次数: 0
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Journal of Empirical Finance
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