Adaptive Market Hypothesis and Predictability: Evidence in Latin American Stock Indices

被引:1
|
作者
Cruz-Hernandez, Andres R. [1 ]
Mora-Valencia, Andres [1 ]
机构
[1] Univ Andes, Sch Management, Bogot, Colombia
关键词
Adaptive market hypothesis; efficient market hypothesis; stock return predictability; Latin America markets; Hipotesis del mercado adaptativo; hipotesis del mercado eficiente; predictibilidad del rendimiento de las acciones; mercados de America Latina; EMERGING MARKETS; EVOLUTIONARY PERSPECTIVE; EFFICIENCY EVIDENCE; TIME; RETURNS; TESTS;
D O I
10.1017/lar.2023.31
中图分类号
K9 [地理];
学科分类号
0705 ;
摘要
This article examines the adaptive market hypothesis in the five most important Latin American stock indices. To that end, we apply three versions of the variance ratio test, as well as the Brock-Dechert-Scheinkman test for nonlinear predictability. Additionally, we perform the Dominguez-Lobato and generalized spectral tests to evaluate the Martingale difference hypothesis. Moreover, we consider salient news related to the plausible market inefficiencies detected by these four tests. Finally, we apply a GARCH-M model to assess the risk-return relationship through time. Our results suggest that the predictability of stock returns varies over time. Furthermore, the efficiency in each market behaves differently over time. All in all, the analyzed emerging market indices satisfy the adaptive market hypothesis, given the switching behavior between periods of efficiencies and inefficiencies, since the adaptive market hypothesis suggests that market efficiency and market anomalies might coexist in capital markets. Este articulo examina la hipotesis del mercado adaptativo en los cinco indices bursatiles mas importantes de America Latina. Para tal fin, aplicamos tres versiones de la prueba de razon de varianza (VRT), asi como la prueba de Brock-Dechert-Scheinkman (BDS) para predictibilidad no lineal. Adicionalmente, realizamos las pruebas Dominguez-Lobato (DL) y generalized spectral (GS) para evaluar la hipotesis de la diferencia Martingala. Ademas, consideramos las noticias mas destacadas relacionadas con las plausibles ineficiencias del mercado detectadas por estas cuatro pruebas. Finalmente, se aplico un modelo GARCH-M para evaluar la relacion riesgo-rendimiento a lo largo del tiempo. Nuestros resultados sugieren que la predictibilidad de los rendimientos de las acciones varia con el tiempo. Ademas, encontramos que la eficiencia en cada mercado se comporta de manera diferente a lo largo del tiempo. Asi, los indices de mercados emergentes analizados satisfacen la hipotesis del mercado adaptativo, debido al comportamiento cambiante entre periodos de eficiencias e ineficiencias, ya que la hipotesis del mercado adaptativo sugiere que la eficiencia del mercado y las anomalias del mercado pueden coexistir en los mercados de capital.
引用
收藏
页码:292 / 314
页数:23
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