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Can the bid–ask spread explain the trend in aggregate idiosyncratic variance? 买卖价差能否解释总体特质方差的趋势?
IF 3.8 2区 经济学 Q1 BUSINESS, FINANCE Pub Date : 2026-01-02 DOI: 10.1016/j.jbankfin.2025.107622
David A. Lesmond , Xuhui (Nick) Pan
We establish the bid–ask spread bias embedded in the Campbell et al. (2001; 2022) (CLMX) estimate of idiosyncratic variance (IV). Minimizing the bid–ask spread effect by using quote midpoints or increasing the return horizon eliminates the upward (CLMX) and downward time trend (Bekaert et al., 2012) in IV. Five natural experiments illustrate that an exogenous shock in the recording of transaction prices significantly affects the resulting time trend in IV. Cross-sectional and time-series regressions show that the bid–ask spread subsumes the CLMX IV time trend.
我们在Campbell et al. (2001; 2022) (CLMX)对特质方差(IV)的估计中建立了买卖价差偏差。通过使用报价中点或增加收益水平来最小化买卖价差效应,消除了IV中的向上(CLMX)和向下的时间趋势(Bekaert et al., 2012)。五个自然实验表明,交易价格记录中的外生冲击显著影响IV中产生的时间趋势。横截面回归和时间序列回归表明,买卖价差包含CLMX IV时间趋势。
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引用次数: 0
Corporate labor violations: Do CEOs’ public charity affiliations matter? 企业违反劳动法:ceo的公益慈善关系重要吗?
IF 3.8 2区 经济学 Q1 BUSINESS, FINANCE Pub Date : 2025-12-30 DOI: 10.1016/j.jbankfin.2025.107625
Mariem Khalifa , Mehdi Khedmati , Mohammed Aminu Sualihu , Alfred Yawson
We examine the impact of CEOs’ public charity affiliations on corporate labor violations and find that public-charity-affiliated CEOs have a lower likelihood of engaging in labor violations than their non-affiliated peers. In a disaggregated analysis, we find the result to be driven primarily by wage and hour violations. This finding is validated when we compare changes in wage and hour violations around different types of CEO turnover. We further identify the promotion of a positive corporate culture and an increase in labor-related expenditures as the main channels through which CEOs’ public charity affiliations affect wage and hour violations. In addition, we find that firms led by public-charity-affiliated CEOs experience lower employee turnover. The impact of public-charity-affiliated CEOs on reducing the likelihood of wage and hour violations is persistent and is more pronounced for CEOs who exhibit more altruistic behavior prior to assuming office. Overall, we provide persuasive evidence that CEOs’ public charity affiliations are beneficial to firms.
我们考察了公益慈善机构ceo对企业劳动违法行为的影响,发现公益慈善机构ceo从事劳动违法行为的可能性低于非公益慈善机构ceo。在分类分析中,我们发现结果主要是由工资和工时违规造成的。当我们比较不同类型的CEO离职时工资和工时违规的变化时,这一发现得到了验证。我们进一步发现,促进积极的企业文化和增加与劳动相关的支出是ceo公益慈善机构影响工资和工时违规行为的主要渠道。此外,我们发现,由隶属于公益慈善机构的ceo领导的公司,员工流动率较低。与公共慈善机构有关联的首席执行官对降低违反工资和工时的可能性的影响是持久的,对于那些在上任前表现出更多利他行为的首席执行官来说,这种影响更为明显。总体而言,我们提供了有说服力的证据,证明ceo的公共慈善关系对公司有利。
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引用次数: 0
Does artificial intelligence mitigate climate change exposure? 人工智能能减轻气候变化风险吗?
IF 3.8 2区 经济学 Q1 BUSINESS, FINANCE Pub Date : 2025-12-29 DOI: 10.1016/j.jbankfin.2025.107623
Junru Zhang , Le Luo , Joey Wenling Yang
Despite the growing integration of artificial intelligence (AI) into business models, studies of its impact on corporate climate change exposure remain scarce. Through an examination of AI-related innovations among US-listed firms from 2001 to 2019, we present compelling evidence that AI innovation effectively mitigates firms’ climate change exposure. In particular, it reduces firms’ exposure to regulatory and physical risks related to climate change through improved carbon management efficiency, with computer vision and control and planning being the most effective types in this context. Our findings are particularly pronounced for mature firms and those facing greater regulatory intervention. The results withstand rigorous tests that address endogeneity concerns. Our study provides strong support for firms to adopt AI innovations to achieve carbon neutrality, contributing to the ongoing discourse regarding AI trade-offs. Our findings also offer valuable insights into the development of climate risk mitigation strategies.
尽管人工智能(AI)越来越多地融入商业模式,但关于其对企业气候变化风险影响的研究仍然很少。通过对2001年至2019年美国上市公司人工智能相关创新的研究,我们提出了令人信服的证据,证明人工智能创新有效地减轻了公司的气候变化风险。特别是,通过提高碳管理效率,它减少了企业面临与气候变化相关的监管和物理风险,计算机视觉、控制和规划是这方面最有效的类型。我们的发现对于成熟公司和那些面临更大监管干预的公司尤其明显。结果经得起解决内生性问题的严格测试。我们的研究为企业采用人工智能创新实现碳中和提供了强有力的支持,为正在进行的关于人工智能权衡的讨论做出了贡献。我们的研究结果还为制定气候风险缓解战略提供了宝贵的见解。
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引用次数: 0
The clan-based investment hypothesis in household stock investment 家庭股票投资中的宗族投资假说
IF 3.8 2区 经济学 Q1 BUSINESS, FINANCE Pub Date : 2025-12-28 DOI: 10.1016/j.jbankfin.2025.107620
Kebin Deng , Zhong Ding , Xu Liu
This paper proposes a clan-based investment hypothesis regarding household stock investment, specifically emphasizing the role of Confucian clan culture in deterring both the probability of stock investment participation and the stock investment ratio in China. Our findings reveal that households strongly influenced by Confucian clan culture are 17.6 % less likely to participate in stock investment and exhibit an 11.8 % lower ratio of stock investment to bank deposits, compared to other households. Moreover, we document that households dominated by Confucian clan culture are more likely to receive informal financial support for real estate investment, further reducing their participation in the stock market. These results suggest that clan-based investment opportunities play a significant role in discouraging household participation in stock investment.
本文提出了家庭股票投资的宗族投资假设,特别强调儒家宗族文化对中国股票投资参与概率和股票投资比例的抑制作用。我们的研究结果显示,受儒家家族文化强烈影响的家庭参与股票投资的可能性比其他家庭低17.6%,股票投资占银行存款的比例比其他家庭低11.8%。此外,我们发现以儒家家族文化为主导的家庭更有可能在房地产投资中获得非正式的金融支持,从而进一步减少了他们对股票市场的参与。这些结果表明,宗族投资机会在阻碍家庭参与股票投资方面发挥了重要作用。
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引用次数: 0
The effects of reduced availability of shadow banking financing: Evidence from employment 影子银行融资可得性降低的影响:来自就业的证据
IF 3.8 2区 经济学 Q1 BUSINESS, FINANCE Pub Date : 2025-12-27 DOI: 10.1016/j.jbankfin.2025.107618
Siyi He , Ceng Zeng
We provide firm-level evidence that reduced availability of shadow banking financing affects firms’ employment decisions. Using China’s 2017 shadow banking regulations as an exogenous shock to constrain the availability of shadow banking, we find that the employment level and the ratio of highly skilled employees in affected firms significantly decrease after the regulations are instituted. The plausible underlying channels are intensification of financial constraints and reduction of R&D investment. The effects are more pronounced for non-state-owned enterprises, labor-intensive firms, and firms in provinces that are more dependent on shadow banking. Furthermore, affected firms strategically adopt outsourcing of their human resources, but the firms’ employment changes still harm their financial performance and total factor productivity.
我们提供了企业层面的证据,证明影子银行融资可得性的降低影响了企业的就业决策。以中国2017年影子银行监管作为外生冲击约束影子银行的可获得性,我们发现监管实施后,受影响企业的就业水平和高技能员工比例显著下降。可能的潜在渠道是财政约束的加剧和研发投资的减少。这种影响对于非国有企业、劳动密集型企业以及更依赖影子银行的省份的企业更为明显。此外,受影响的企业战略性地采取人力资源外包,但企业的就业变化仍然损害其财务绩效和全要素生产率。
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引用次数: 0
Rules of thumb and retirement accounts 经验法则和退休账户
IF 3.8 2区 经济学 Q1 BUSINESS, FINANCE Pub Date : 2025-12-27 DOI: 10.1016/j.jbankfin.2025.107619
Vanya Horneff , David Love , Raimond Maurer
We examine the welfare costs of using common rules of thumb for saving, investing, 401k contributions, and withdrawals in a realistic environment with taxes, Social Security, 401k plan details, and uncertainty in income, lifespan, and returns. We assess common heuristics such as allocating 100 minus age to stocks, contributing 6–10% of income to a 401k, and withdrawing only the required minimum distribution (RMD) in retirement. Target-date rules lead to moderate welfare losses, with one-time compensating variations ranging from $59–$2514 for 401k allocation and $66–$873 for other savings. Contribution rules cause smaller losses ($22–$772), reflecting the importance of the 401k matching incentives. Withdrawing only the RMD leads to substantial welfare losses, ranging between $1321–$9919 from the perspective of a 66-year-old. But a hybrid rule—taking the maximum of a fixed percentage and the RMD—generates welfare losses about half as large as those associated with the RMD rule. We also compare these rules to more clearly suboptimal behaviors, such as avoiding the stock market, delaying saving, or contributing below the matching threshold. In these cases, rules of thumb look far more attractive, often avoiding substantial welfare losses. Overall, we find mixed support for the effectiveness of rules of thumb. While the welfare losses associated with such rules are modest, there may be substantial benefits to more detailed financial planning.
我们在一个现实的环境中,通过税收、社会保障、401k计划细节以及收入、寿命和回报的不确定性,研究了使用普通经验法则进行储蓄、投资、401k缴费和取款的福利成本。我们评估了常见的启发式方法,例如将100减去年龄分配给股票,将收入的6-10%贡献给401k,并在退休时仅提取所需的最低分配(RMD)。目标日期规则导致适度的福利损失,401k分配的一次性补偿变化从59美元到2514美元不等,其他储蓄为66美元到873美元不等。缴费规则造成的损失较小(22 - 772美元),反映了401k匹配激励的重要性。只提取RMD会导致大量的福利损失,从66岁的人的角度来看,损失在1321美元至9919美元之间。但是混合规则——取固定百分比的最大值和RMD——产生的福利损失大约是RMD规则的一半。我们还将这些规则与更明显的次优行为进行比较,例如避免股票市场、延迟储蓄或低于匹配阈值的贡献。在这些情况下,经验法则看起来更有吸引力,通常可以避免实质性的福利损失。总的来说,我们发现经验法则的有效性得到了褒贬不一的支持。虽然与这些规则有关的福利损失不大,但更详细的财务规划可能会带来实质性的好处。
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引用次数: 0
Guarantees, risk shifting and credit crunches 担保、风险转移和信贷紧缩
IF 3.8 2区 经济学 Q1 BUSINESS, FINANCE Pub Date : 2025-12-26 DOI: 10.1016/j.jbankfin.2025.107615
Caio Machado , Ana Elisa Pereira
This paper analyzes the role of guarantees when a policymaker wants to avoid a credit crunch, but at the same time is concerned that its policies may lead to excessive risk taking. Banks face a coordination problem in their investment decisions and are allowed to risk-shift to projects with smaller expected return and higher volatility. Government guarantees can avoid a freeze in funding at the cost of increasing risk-shifting behavior. When fundamentals are sufficiently low, the policymaker prefers not to intervene and a credit crunch happens. The moral hazard problem makes guarantees more powerful, reducing the amount of guarantees needed to avoid a coordination failure.
本文分析了当政策制定者希望避免信贷紧缩,但同时又担心其政策可能导致过度冒险时,担保的作用。银行在投资决策中面临协调问题,并被允许将风险转移到预期回报较小、波动性较高的项目。政府担保可以避免资金冻结,但代价是风险转移行为的增加。当基本面足够低时,政策制定者倾向于不干预,信贷紧缩就会发生。道德风险问题使担保更加有力,减少了避免协调失败所需的担保数量。
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引用次数: 0
Does options trading stabilize stock prices? : Evidence from a natural experiment 期权交易能稳定股价吗?来自自然实验的证据
IF 3.8 2区 经济学 Q1 BUSINESS, FINANCE Pub Date : 2025-12-25 DOI: 10.1016/j.jbankfin.2025.107612
Da-Hea Kim
We study the relation between options trading volume and stock price volatility, providing causal evidence that options trading stabilizes underlying stock prices. Exploiting the implementation of the Penny Pilot Program as an exogenous shock to options trading, we find that increased options trading reduces stock price volatility. We identify two mechanisms driving the volatility-reducing effect of options trading: (1) providing a buffer for liquidity shocks to stocks, which mitigates extreme price movements, and (2) correcting mispricing, thereby anchoring stock prices closer to their intrinsic values. Our findings support the beneficial role of options trading in enhancing price stability and efficiency.
我们研究了期权交易量与股票价格波动之间的关系,提供了期权交易稳定标的股票价格的因果证据。利用便士试点计划的实施作为期权交易的外生冲击,我们发现期权交易的增加降低了股价波动。我们确定了两种驱动期权交易降低波动性效应的机制:(1)为股票的流动性冲击提供缓冲,从而减轻极端的价格波动;(2)纠正错误定价,从而使股票价格更接近其内在价值。我们的研究结果支持期权交易在提高价格稳定性和效率方面的有益作用。
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引用次数: 0
A tale of two banking regulations: Impact of regulatory overlap on the analysis of liquidity creation 两个银行监管的故事:监管重叠对流动性创造分析的影响
IF 3.8 2区 经济学 Q1 BUSINESS, FINANCE Pub Date : 2025-12-24 DOI: 10.1016/j.jbankfin.2025.107613
Katherine Wood
Community banks are a crucial part of the economy, so evaluating the consequences of regulatory changes impacting this subset of banks is important. Using amendments in 2005 to the FDIC Improvement Act (FDICIA) and the Community Reinvestment Act (CRA), I examine how changes to a community bank’s regulatory requirements affect liquidity creation. I show that treating each regulatory change as a separate event leads to confounding results. When ignoring the overlap of the regulatory requirement, the results suggest that both regulations lead to increases in liquidity creation. However, after disentangling the effects of the two regulatory changes, I show that only the amendment to the CRA drives the results. Failure to disentangle the two changes leads to an overstatement of the increase in liquidity creation. Additionally, I find no evidence that the regulatory change leads to outcomes contradictory to the purposes of the CRA.
社区银行是经济的重要组成部分,因此评估监管变化对这部分银行的影响是很重要的。利用2005年联邦存款保险公司改进法案(FDIC Improvement Act, FDICIA)和社区再投资法(Community Reinvestment Act, CRA)的修正案,我研究了社区银行监管要求的变化如何影响流动性创造。我表明,将每一个监管变化视为一个单独的事件会导致混淆的结果。当忽略监管要求的重叠时,结果表明,两种监管都会导致流动性创造的增加。然而,在理清这两项监管变化的影响之后,我表明只有对CRA的修订才会推动结果。如果不能把这两种变化区分开来,就会导致对流动性创造增量的夸大。此外,我没有发现任何证据表明监管变化会导致与CRA目的相矛盾的结果。
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引用次数: 0
How do assessed values affect the transaction prices of homes? 评估价值如何影响房屋的交易价格?
IF 3.8 2区 经济学 Q1 BUSINESS, FINANCE Pub Date : 2025-12-23 DOI: 10.1016/j.jbankfin.2025.107610
Marcel Fischer , Patrick Hauf , Simon Stehle
Property taxes are commonly levied as a percentage of a home’s assessed value (AV). AVs should affect home prices through opposing channels. An unexpected increase in AV implies higher tax payments, which should hurt a home’s selling price (tax channel). On the other hand, the increase should have a positive effect since AVs serve as reference prices (anchoring channel). In a quasi-experimental setting exploiting geographic variations in AV-publication dates and reassessment frequencies, we find that a higher AV leads to a lower transaction price, indicating that the tax channel prevails. Disentangling the aggregate effect, we document that empirically, the anchoring channel does not play a major role. Our results thus suggest an exacerbation of previously documented inequities caused by taxation.
财产税通常按房屋评估价值(AV)的百分比征收。自动驾驶汽车应该通过相反的渠道影响房价。AV的意外增加意味着更高的税收,这应该会损害房屋的销售价格(税收渠道)。另一方面,由于自动驾驶汽车作为参考价格(锚定渠道),这一增长应该具有积极的影响。在利用AV发布日期和重新评估频率的地理差异的准实验设置中,我们发现较高的AV导致较低的交易价格,表明税收渠道占主导地位。在解开聚合效应后,我们从经验上证明,锚定渠道并不起主要作用。因此,我们的研究结果表明,以前记录的由税收引起的不平等加剧。
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引用次数: 0
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Journal of Banking & Finance
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