Omay, Tolga

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https://hdl.handle.net/20.500.14411/7237
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T.,Omay
Omay, Tolga
O., Tolga
Tolga, Omay
Omay,T.
O.,Tolga
T., Omay
Omay T.
Job Title
Profesor Doktor
Email Address
tolga.omay@atilim.edu.tr
Main Affiliation
Economics
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Website
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Scopus Author ID
23978235900
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Google Scholar ID
WoS Researcher ID
GDI-4259-2022

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2

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0

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14

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2

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17

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7

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5

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16

PEACE, JUSTICE AND STRONG INSTITUTIONS
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0

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8

DECENT WORK AND ECONOMIC GROWTH
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11

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4

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0

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6

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0

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7

AFFORDABLE AND CLEAN ENERGY
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3

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10

REDUCED INEQUALITIES
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2

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11

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1

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9

INDUSTRY, INNOVATION AND INFRASTRUCTURE
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3

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1

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3

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2

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12

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1

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13

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7

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15

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1

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Documents

80

Citations

1218

h-index

20

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Documents

72

Citations

1070

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Scholarly Output

65

Articles

55

Views / Downloads

19/0

Supervised MSc Theses

4

Supervised PhD Theses

2

WoS Citation Count

431

Scopus Citation Count

500

WoS h-index

13

Scopus h-index

13

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0

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0

WoS Citations per Publication

6.63

Scopus Citations per Publication

7.69

Open Access Source

32

Supervised Theses

6

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JournalCount
Applied Economics5
Computational Economics5
Springer Proceedings in Business and Economics -- 4th International Conference on Banking and Fice Perspectives, ICBFP 2019 -- 2 May 2019 through 3 May 2019 -- Famagusta -- 2737293
Mathematics3
Environmental Science and Pollution Research2
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Has files: falseSubject: Market efficiency

Scholarly Output Search Results

Now showing 1 - 2 of 2
  • Thumbnail Image
    Article
    Citation - WoS: 9
    Citation - Scopus: 9
    Market Development and Market Efficiency: Evidence Based on Nonlinear Panel Unit Root Tests
    (Routledge Journals, Taylor & Francis Ltd, 2019) Aktan, Ceyda; Iren, Perihan; Omay, Tolga
    This study tests the weak form market efficiency of 32 European stock markets. Utilizing monthly data from June 2006 to June 2017, six different, newly developed nonlinear panel root tests were applied in three different groups of European markets: Frontier, Emerging and Developed. The results show that there is a meaningful relationship between different levels of economic development and the weak form market efficiency. Considering the nonlinear structure of the stock market indices, use of linear models might lead to wrong conclusions regarding market efficiency. Using several nonlinear panel root tests, the results of this study shed more light on the true data generating process of the stock market indices and more appropriately model market efficiency.
  • Thumbnail Image
    Article
    Citation - WoS: 4
    Citation - Scopus: 4
    Examining the non-linear stochastic behavior of the European energy market: evidence from nonlinear unit root tests
    (Taylor & Francis inc, 2022) Aktan, Ceyda; Omay, Tolga; Sahin, Eyyup Ensari
    Stock market efficiency has been one of the most investigated topics of the last century. Knowing the efficiency of a market has major implications for both investors and policymakers, as a perfectly efficient market eliminates any arbitrage opportunity and the possibility of actually beating the market. For this reason, this study aims to examine the weak-form market efficiency of the European energy markets using linear and nonlinear unit root tests for the period covering February 2012 to April 2021. The results indicated that while the Augmented Dickey-Fuller test captured the stationarity in only Austria's Oil, and Gas index, using nonlinear tests showed stationarity in 17 of the 20 indices tested. Overall, the European Energy Market can be considered inefficient under the weak form of the Efficient Market Hypothesis. Therefore, there is an indication of profitable arbitrage opportunities among energy stocks. Signs of stationarity also suggest that shocks to energy stocks will have temporary effects. Energy markets of Austria, Finland, France, Greece, Italy, Netherlands, Russia, Spain, Sweden, and the United Kingdom, for this reason, could benefit from policy changes to support increased information flow to achieve more transparency and utilize better trading technologies.