不对称风险和羊群行为:埃及共同基金的量子回归研究

Noura Metawa, S. Metawa, Maha Metawea, Ahmed El-Gayar
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引用次数: 0

摘要

目的 本文深入研究了埃及共同基金在市场前后变化和不同条件下的羊群行为,并比较了非对称风险条件对埃及共同基金在市场上涨和下跌时的羊群行为的影响。我们采用了两个著名的模型,即横截面标准偏差模型(CSSD)和横截面绝对偏差模型(CSAD)。我们发现,共同基金的行为在不同的政治和社会事件发生后并没有发生变化。在整个期间,我们仅使用 CSAD 模型就发现了在市场下行条件下存在羊群行为的证据。我们将我们的发现概括为:在整个系列中,只有在特定点的事件发生前、事件发生后或同时发生事件的情况下,在不同数量级的市场中存在羊群行为。相反,在市场上行时,我们发现在所有不同的量化条件下都不存在羊群行为。当市场下跌时,经理们害怕不确定性条件,忽视自己的私人信息,避免独立行事,从而追随其他共同基金。研究局限/启示未来的研究应更深入地探讨羊群行为的驱动因素,评估其长期影响,制定风险管理策略,并考虑采取监管措施,以减轻对共同基金业绩和投资者结果的潜在负面影响。研究发现了在高量化和低量化市场中都存在羊群行为的证据,但仅限于在下跌市场中。社会影响研究显示,尽管发生了各种政治和社会事件,共同基金的行为仍然保持一致,这表明其投资策略具有一定的弹性。研究发现,无论是在高量化还是低量化市场中,都存在羊群行为的证据,但这种行为只出现在下跌市场中。在这种市场下跌的情况下,基金经理似乎放弃了自己的私人信息,表现出一种从众而非独立行动的倾向。未来的研究应更深入地探讨羊群行为的驱动因素,评估其长期影响,制定风险管理策略,并考虑采取监管措施,以减轻对共同基金业绩和投资者结果的潜在负面影响。 原创性/价值 本文调查了非对称风险条件下埃及共同基金的羊群行为,研究遵循了羊群行为分析和埃及共同基金的谱系,通过对货币浮动、COVID-19 和政治选举等事件前后的市场条件进行帝国分析,扩展了研究范围。该研究为新兴市场共同基金的决策者和投资者提供了大量建议。
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Asymmetry risk and herding behavior: a quantile regression study of the Egyptian mutual funds
PurposeThis paper deeply investigates the herd behavior of the Egyptian mutual funds under changing and different conditions of the market pre- and post-events and compares the impact of asymmetric risk conditions on the herding behavior of the Egyptian mutual funds in both up and down markets.Design/methodology/approachWe test for the existence of herding for the whole period from 2003 to 2022, as well as for the pre-and post-different Egyptian uprising periods. We employ two well-known models, namely the cross-sectional standard deviation (CSSD) and cross-sectional absolute deviation (CSAD) models. Additionally, we use the quantile regression approach.FindingsWe find that the behavior of mutual funds does not change following the different political and social events. For the whole period, we find evidence of herding behavior using only the model of CSAD in down-market conditions. We generalize our finding to be evidence of the existence herding behavior in different quantiles, under only the down market in specific points’ pre, post or both given events throughout the whole series. Conversely, during the upper market, we show a full absence of herding behavior considering all different quantiles. When the market is down, managers are afraid of the condition of uncertainty, neglecting their own private information, avoid acting independently and consequently, following other mutual funds. When the market is up, managers become rational and act fully independent.Research limitations/implicationsFuture research should delve deeper into the drivers of herding behavior, assess its longer-term effects, develop risk management strategies and consider regulatory measures to mitigate the potential negative impact on mutual fund performance and investor outcomes.Practical implicationsThe study reveals that the behavior of mutual funds remains consistent despite various political and social events, suggesting a degree of resilience in their investment strategies. The research uncovers evidence of herding behavior in both high and low quantiles, but exclusively in down markets. In such conditions of market decline, fund managers appear to forsake their private information, exhibiting a tendency to follow the crowd rather than acting independently.Social implicationsThe study reveals that the behavior of mutual funds remains consistent despite various political and social events, suggesting a degree of resilience in their investment strategies. The research uncovers evidence of herding behavior in both high and low quantiles, but exclusively in down markets. In such conditions of market decline, fund managers appear to forsake their private information, exhibiting a tendency to follow the crowd rather than acting independently. Future research should delve deeper into the drivers of herding behavior, assess its longer-term effects, develop risk management strategies and consider regulatory measures to mitigate the potential negative impact on mutual fund performance and investor outcomes.Originality/valueThe paper investigates the herd behavior of the Egyptian mutual funds under asymmetric risk conditions, the study follows the spectrum of the herding behavior analysis and Egyptian mutual funds, extending the research with imperial analysis of market conditions pre- and post-events including currency floating, COVID-19 and political elections. The study gives substantial recommendations for policymakers and investors in emerging markets mutual funds.
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