Testing Random Walk Hypothesis in Turkish Foreign Exchange Market

2015 ◽  
pp. 51-63
Author(s):  
Levent Çıtak ◽  
Veli Akel ◽  
Murat Çetin
Keyword(s):  
Exchange Rate ◽  
Random Walk ◽  
Foreign Exchange ◽  
Foreign Exchange Market ◽  
Weak Form ◽  
Efficient Market Hypothesis ◽  
Ratio Test ◽  
Exchange Market ◽  
Developed Economies ◽  
Random Walk Hypothesis

This chapter revisits the empirical validity of the weak-form efficient market hypothesis for Turkish foreign exchange markets. The random-walk hypothesis in foreign-exchange rates market is one of the most researched areas, particularly in developed economies. This chapter applies ADF and PP unit root test, Lo and MacKinlay's (1988) conventional variance ratio test and Ljung-Box Q tests to examine the validity of the random-walk hypothesis in the Turkish foreign-exchange market. The chapter utilizes weekly nominal TRY/USD exchange rate for data from January 2000 to December 2013. The results provide evidence rejecting the random walk hypothesis for weekly nominal exchange rate series.

Testing Random Walk Hypothesis in Turkish Foreign Exchange Market

2016 ◽  
pp. 969-982
Author(s):  
Levent Çıtak ◽  
Veli Akel ◽  
Murat Çetin
Keyword(s):  
Exchange Rate ◽  
Random Walk ◽  
Foreign Exchange ◽  
Foreign Exchange Market ◽  
Weak Form ◽  
Efficient Market Hypothesis ◽  
Ratio Test ◽  
Exchange Market ◽  
Developed Economies ◽  
Random Walk Hypothesis

This chapter revisits the empirical validity of the weak-form efficient market hypothesis for Turkish foreign exchange markets. The random-walk hypothesis in foreign-exchange rates market is one of the most researched areas, particularly in developed economies. This chapter applies ADF and PP unit root test, Lo and MacKinlay's (1988) conventional variance ratio test and Ljung-Box Q tests to examine the validity of the random-walk hypothesis in the Turkish foreign-exchange market. The chapter utilizes weekly nominal TRY/USD exchange rate for data from January 2000 to December 2013. The results provide evidence rejecting the random walk hypothesis for weekly nominal exchange rate series.

scholarly journals Efficiency of the Black Foreign Exchange Market

2019 ◽  
Vol 11 (2) ◽  
pp. 165
Author(s):  
Ali Farhan Chaudhry ◽  
Mian Muhammd Hanif ◽  
Sameera Hassan ◽  
Muhammad Irfan Chani
Keyword(s):  
Exchange Rate ◽  
Exchange Rates ◽  
Foreign Exchange ◽  
Foreign Exchange Market ◽  
Weak Form ◽  
Exchange Rate Policy ◽  
Foreign Exchange Rate ◽  
Ratio Test ◽  
Exchange Market ◽  
Policy Makers

This empirical study is first of its nature to examine the weak-form of efficiency for unofficial foreign exchange market of Pakistan proxied by Japanese Yen (JPY/PKR), Swiss Franc (CHF/PKR), British Pound (GBP/PKR), and US Dollar (USD/PKR) exchange rates. For this we have employed Ljung Box Q-test, unit root tests including Dickey-Fuller (Dickey 1979), Augmented Dickey-Fuller (Dickey 1981) tests and Phillips and Perron (1988) test, Durbin Watson test, Runs-test, and Variance ratio test by using unofficial foreign exchange rate time series of Yen/PKR, CHF/PKR, GBP/PKR and USD/PKR from 1994M07 to 2001M06. Empirical results lead to the conclusion that the unofficial foreign exchange market of Pakistan is weak-form efficiency. The implications of this empirical research are of great importance for designing foreign exchange policy i.e. policy makers (be it accounting, export/import or public policy makers) are to consider fluctuations in unofficial foreign exchange rates while designing official foreign exchange rate policy of developing country like Pakistan. Further, policymakers can enhance the efficiency of official foreign exchange market by intervention subject to a widening of unofficial foreign exchange premium beyond a certain limit in developing countries like Pakistan.

scholarly journals Predictability of Stock Returns on the Dhaka Stock Exchange

The Batuk ◽  
2020 ◽  
Vol 6 (2) ◽  
pp. 87-96
Author(s):  
Yub Raj Dhungana
Keyword(s):  
Random Walk ◽  
Stock Returns ◽  
Stock Exchange ◽  
Weak Form ◽  
Efficient Market Hypothesis ◽  
Daily Basis ◽  
Ratio Test ◽  
Efficient Market ◽  
Random Walk Hypothesis ◽  
Augmented Dickey Fuller

The study examines the predictability of index returns on the Dhaka stock market within the framework of the weak-form efficient market hypothesis using historical daily returns for a period of 1st June, 2014 to 29th May, 2020. The Jarque-Bera statistics test explored the return distribution of Dhaka Stock Exchange is non-normal. The random walk hypothesis (RWH) was tested using autocorrelation test, runs test, unit root tests(Augmented Dickey-Fuller (ADF) and, Phillip-Perron (PP) test) and variance ratio test. The results explored that all tests rejected the random walk hypothesis required by the weak-form efficient market hypothesis. This provides empirical basis to infer that the DSE is inefficient at weak-form and stock return can be predicted. The rejection of the RWH on a daily basis is possibly an indication that the weak-form inefficient characteristic of the DSE is not sensitive to return frequency.

scholarly journals Variance Ratio Tests Of Random Walk Hypothesis Of The Euro Exchange Rate

2011 ◽  
Vol 7 (12) ◽  
Author(s):  
Jeng-Hong Chen
Keyword(s):  
Exchange Rate ◽  
Random Walk ◽  
Weak Form ◽  
Ratio Test ◽  
Variance Ratio ◽  
Dollar Exchange Rate ◽  
Random Walk Hypothesis ◽  
Variance Ratio Test ◽  
Non Parametric

The introduction of the Euro has drawn interested parties attention on the Euro/U.S. Dollar exchange rate market. In this research, three variance ratio tests: Lo-MacKinlays (1988) conventional variance ratio test, Chow-Dennings (1993) simple multiple variance ratio test, and Wrights (2000) non-parametric ranks and signs based variance ratio tests are adopted to test the random walk hypothesis (RWH) of the Euro/U.S. Dollar exchange rate market using the data from January 1999 to July 2008. All of three variance ratio tests results show that the RWH cannot be rejected. Therefore, the Euro/U.S. Dollar exchange rate market is regarded as weak-form efficient.

scholarly journals Foreign Exchange Market Efficiency In Botswana

2017 ◽  
Vol 10 (1) ◽  
pp. 103-125 ◽  
Author(s):  
Gofaone Matebejana ◽  
Gaotlhobogwe Motlaleng ◽  
James Juana
Keyword(s):  
Random Walk ◽  
Exchange Rates ◽  
Foreign Exchange ◽  
Unit Root ◽  
Foreign Exchange Market ◽  
Weak Form ◽  
Strong Form ◽  
Unit Root Tests ◽  
Exchange Market ◽  
Weak Form Efficiency

Abstract The random walk behaviour of exchange rates in Botswana’s foreign exchange market is explored by employing unit root tests. The unit root tests employed include the ADF, PP and the KPSS. This paper uses monthly data for the period 2000:01 to 2015:12. The conclusive evidence based on the unit roots tests indicates that the behaviour of the Pula against the South African Rand, Japanese Yen and the American Dollar exchange rates is consistent with the random walk process and the weak form efficiency market hypothesis. However, the Pula against the British Pound is inconsistent with the weak form efficiency market hypothesis. These results compliment those from Namibia (Mabakeng and Sheefeni, 2014). Furthermore, there is no evidence of the semi-strong form level of efficiency as revealed by the cointegration results obtained. These results corroborates with those found by Wickremasinghe (2008) and Çiçek (2014) in which weak form was found to exist whilst the semi-strong form was found not to exist. This paper has filled an important gap as it is the first study to investigate the efficiency of the foreign exchange market in Botswana.

scholarly journals BITCOIN-USD TRADING USING SVM TO DETECT THE CURRENT DAY’S TREND IN THE MARKET

2019 ◽  
Vol 1 (1) ◽  
pp. 70-77
Author(s):  
Ferdiansyah Ferdiansyah ◽  
Edi Surya Negara ◽  
Yeni Widyanti
Keyword(s):  
Exchange Rate ◽  
Foreign Exchange ◽  
Foreign Exchange Market ◽  
Investment Decisions ◽  
Market Value ◽  
Develop Model ◽  
Support Vector ◽  
Prediction Tool ◽  
Exchange Market ◽  
Support Vector Classifier

Cryptocurrency trade is now a popular type of investment. Cryptocurrency market has been treated similar to foreign exchange and stock market. The Characteristics of Bitcoin have made Bitcoin keep rising In the last few years. Bitcoin exchange rate to American Dollar (USD) is $3990 USD on November 2018, with daily pice fluctuations could reach 4.55%2. It is important to able to predict value to ensure profitable investment. However, because of its volatility, there’s a need for a prediction tool for investors to help them consider investment decisions for cryptocurrency trade. Nowadays, computing based tools are commonly used in stock and foreign exchange market predictions. There has been much research about SVM prediction on stocks and foreign exchange as case studies but none on cryptocurrency. Therefore, this research studied method to predict the market value of one of the most used cryptocurrency, Bitcoin. The preditct methods will be used on this research is regime prediction to develop model to predict the close value of Bitcoin and use Support vector classifier algorithm to predict the current day’s trend at the opening of the market

scholarly journals HEDGING CURRENCY RISKS IN INTERNATIONAL BUSINESS USING THE OPPORTUNITIES OF THE INTERNATIONAL FOREIGN EXCHANGE MARKET

2021 ◽  
Author(s):  
Olena Liegostaieva
Keyword(s):  
Exchange Rate ◽  
Foreign Exchange ◽  
International Business ◽  
Foreign Exchange Market ◽  
Foreign Currency ◽  
Exchange Market ◽  
Currency Risk ◽  
Exchange Rate Fluctuations ◽  
Current Value ◽  
Financial Result

The article is devoted to the study of currency risk hedging in international business. The article notes that the international foreign exchange market is the largest and fastest growing of all world markets. The characteristic features of the international currency market are substantiated and offered. It is also noted that foreign exchange transactions provide economic ties between participants located on different sides of state borders: settlements between firms from different countries for the supply of goods and services, foreign investment, international tourism and business travel. It is determined that hedging of currency risks is the protection of funds from the unfavorable movement of exchange rates, and is carried out in fixing the current value of funds by concluding an agreement on the foreign exchange market. When hedging, the risk of exchange rate changes disappears, and this makes it possible to forecast the company's activities and see the financial result, which is not distorted by exchange rate fluctuations, which will allow you to determine product prices, calculate profits, etc. The main difference between hedging and other types of transactions is that its purpose is not to generate additional profits, but to reduce the risk of potential losses, as risk reduction is almost always necessary to pay, hedging, of course, involves additional costs. Hedging is a way to improve business planning. An enterprise wishing to use this service shall pledge the specified amount, from which losses on its positions will be deducted. In today's conditions, thanks to the foreign exchange market, there is a very reliable way to hedge currency risk. This method is to fix the current value of funds by concluding agreements in this market. With hedging, the company eliminates the risk of exchange rate fluctuations, and this allows you to forecast activities and see the financial result, which is not changed by exchange rate fluctuations. Allows you to pre-determine product prices, determine profits, etc. Thus, the principle of hedging in international business is to open a currency position in a foreign currency account for future transactions to convert funds.

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