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Browsing by Subject "Information asymmetry"

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    Bilgiye dayalı manipulasyonda menfaat elde etme şartinin yerindeliği
    (Banka ve Ticaret Hukuku Araştırma Enstitüsü, 2017-06) Manavgat, Ç.
    Manipülasyon, sermaye piyasasında yanlış fiyat oluşmasına ve buna bağlı olarak yatırımcının güveninin sarsılmasına yol açar. Bu olumsuz özelliği nedeniyle, sermaye piyasasmda doğru fiyat oluşumunu olumsuz yönde etkileyen en önemli sorun olarak öne çıkar. Bilgiye dayalı manipülasyonda, kamuya açıklanan gerçeğe aykırı bilgi, fiyatın yanlış oluşmasına neden olur, arz ve talebi yanlış yönde etkilen Piyasa odaklı bir yaklaşımla, yasaklanması gereken, gerçeğe aykırı bilginin kamuya açıklanmasıdır. Gerçeğe aykırı bilgi verenin, bu fiiliyle menfaat elde edip etmemesi, fiilin piyasada yarattığı olumsuz etkiyi değiştirmez. Sermaye Piyasası Kanunu’nun 107.2 hükmünde 2015 yılında yapılan değişiklikle, menfaat elde edilmesi, bilgiye dayalı manipülasyonun maddi unsurları arasına alınmıştır. Bu makalede söz konusu değişikliğin sermaye piyasası hukuku bakımından analizi yapılmıştır. Çalışmada, önce temel sorun belirlenmiş, daha sonra bilgi dengesizliğinin fiyat oluşumuna etkisi kuramsal bakımdan ele alınmış; karşılaştırmalı hukukta bilgiye dayalı manipülasyona ilişkin düzenleme yaklaşımı incelenmiş; Sermaye Piyasası Kanunu’nda yapılan değişikliğin gerekçeleri, yapılan değişiklikle, öngörülen hedef arasındaki bağlantı değerlendirilmiş ve ulaşılan sonuçlar açıklanmıştır.
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    The impact of blockchain related name changes on corporate performance
    (Elsevier, 2020) Akyıldırım, E.; Corbet, S.; Şensoy, Ahmet; Yarovaya, L.
    This paper examines the impact of blockchain and crypto-related name changes on corporate and financial performance of the corporations. We document several pieces of evidence suggesting that companies who partake in such “crypto-exuberant” naming practices become more volatile and offer substantial and persistent stock market premiums as a reward for their corporate identity change. However, the retroactive name changes harm firm's short-term profitability and have a dampening effect on financial leverage of the company. This paper advances the Dotcom effect literature by providing novel results on the changing traditional pathways of price discovery and information flows after the announcement of corporate name changes to blockchain-related names. The identified contagion channels display that crypto-exuberant companies become more susceptible to cryptocurrency markets, which should interest regulators and investors.
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    Informed trading, order flow shocks and the cross section of expected returns in Borsa Istanbul
    (Routledge, 2020-01) Tiniç, Murat; Salih, A.
    This paper examines the relationship between information asymmetry and stock returns in Borsa Istanbul. For all stocks that are traded in Borsa Istanbul between March 2005 and April 2017, we estimate the probability of informed trading (PIN) to proxy for information asymmetry. Firm-level cross-sectional regressions indicate a statistically insignificant relationship between PIN estimates and future returns. Moreover, univariate and multivariate portfolio analyses assert that investors that hold stocks that have high information asymmetry do not obtain significant future returns. Consequently, our results suggest that information asymmetry proxied by PIN is a firm-specific risk and can be eliminated with portfolio diversification. Findings are robust to different factorizations in estimating PIN and free of any bias due to trade classification algorithms, boundary solutions, floating-point exceptions and symmetric order flow shocks.
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    Non-cooperative joint replenishment under asymmetric information
    (Elsevier, 2013) Körpeoğlu, E.; Şen, A.; Güler, K.
    We consider jointly replenishing n ex-ante identical firms that operate under an EOQ like setting using a non-cooperative game under asymmetric information. In this game, each firm, upon being privately informed about its demand rate (or inventory cost rate), submits a private contribution to an intermediary that specifies how much it is willing to pay for its replenishment per unit of time and the intermediary determines the maximum feasible frequency for the joint orders that would finance the fixed replenishment cost. We show that a Bayesian Nash equilibrium exists and characterize the equilibrium in this game. We also show that the contributions are monotone increasing in each firm's type. We finally conduct a numerical study to compare the equilibrium to solutions obtained under independent and cooperative ordering, and under full information. The results show that while information asymmetry eliminates free-riding in the contributions game, the resulting aggregate contributions are not as high as under full information, leading to higher aggregate costs.

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