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Erol Köycü Asst. Prof. Dr. SIRNAK UNIVERSITY FACULTY OF ECONOMICS ADMINISTRATIVE SCIENCES
Publication 15 Review 3 CrossRef Cited 23 TR Dizin Cited 1
15 Publication
3 Review
23 CrossRef Cited
1 TR Dizin Cited
0000-0001-8166-2185

Research Fields

Investment and Portfolio Management Banking and Insurance Finance and Investment Behavioural Finance Financial Markets and Institutions

Institution

SIRNAK UNIVERSITY FACULTY OF ECONOMICS ADMINISTRATIVE SCIENCES

Popular Publications

Causality Relationship Between Domestic Investor and Total Investor in Borsa Istanbul
Authors: Erol Köycü
Published: 2021 , The Journal of Business Science
DOI: 10.22139/jobs.956148
CITED 0 FAVORITE 1 TOTAL DOWNLOAD COUNT 906

0

1

906

Determination of Economic and Financial Factors Affecting Investment Instruments: An Application on Borsa İstanbul
Authors: Erol Köycü , İlhan Ege
Published: 2025 , BDDK Bankacılık ve Finansal Piyasalar Dergisi
DOI: 10.46520/bddkdergisi.1723976
CITED 0 FAVORITE 1 TOTAL DOWNLOAD COUNT 488

0

1

488

Publications

The Impact of Earnings Per Share on Firm Valuation Indicators: Evidence from the BIST Banking Index
Authors: Erol Köycü
Published: 2026 , Kastamonu Üniversitesi İktisadi ve İdari Bilimler Fakültesi Dergisi
DOI: 10.21180/iibfdkastamonu.1647759
FAVORITE 0 TOTAL DOWNLOAD COUNT 307

0

307

The Importance of Dividend Policy in the Relationship between Capital Structure and Financial Performance: An Empirical Analysis of BIST50 Firms
Authors: Erol Köycü
Published: 2026 , İzmir Journal of Economics
DOI: 10.24988/ije.1754703
FAVORITE 0 TOTAL DOWNLOAD COUNT 556

0

556

The Effect of Cash Flow Volatility on Working Capital: An Analysis of the BIST Transportation Index
Authors: Erol Köycü
Published: 2026 , The Journal of Business Science
DOI: 10.22139/jobs.1746608
FAVORITE 0 TOTAL DOWNLOAD COUNT 744

0

744

The impact of economic outlook on selected sector performances: A study on Türkiye
Authors: Erol Köycü
Published: 2026 , Gazi Journal of Economics and Business
DOI: 10.30855/gjeb.2026.12.1.004
FAVORITE 0 TOTAL DOWNLOAD COUNT 934

0

934

THE MODERATING ROLE OF FINANCIAL LEVERAGE IN THE RELATIONSHIP BETWEEN MANAGER-SHAREHOLDER AGENCY COST AND FINANCIAL PERFORMANCE: A STUDY ON BIST TEXTILE LEATHER INDEX
Authors: Erol Köycü , Tuğba Nur
Published: 2025 , International Journal of Management Economics and Business
DOI: 10.17130/ijmeb.1597014
FAVORITE 0 TOTAL DOWNLOAD COUNT 587

0

587

Determination of Factors Affecting Financial Asset Investments
Authors: Erol Köycü , İlhan Ege
Published: 2025 , Eskişehir Osmangazi University Journal of Economics and Administrative Sciences
DOI: 10.17153/oguiibf.1582322
FAVORITE 0 TOTAL DOWNLOAD COUNT 1108

0

1108

Determination of Economic and Financial Factors Affecting Investment Instruments: An Application on Borsa İstanbul
Authors: Erol Köycü , İlhan Ege
Published: 2025 , BDDK Bankacılık ve Finansal Piyasalar Dergisi
DOI: 10.46520/bddkdergisi.1723976
FAVORITE 1 TOTAL DOWNLOAD COUNT 488

1

488

POSSIBLE EFFECTS OF UNCERTAINTY FACTORS ON GREEN BOND RETURNS
Authors: Erol Köycü
Published: 2025 , Pamukkale University Journal of Social Sciences Institute
DOI: 10.30794/pausbed.1611428
FAVORITE 0 TOTAL DOWNLOAD COUNT 731

0

731

The Impact of Greenhouse Gas Risks on Stock Market Returns: An Application on G7 Countries
Authors: Erol Köycü
Published: 2024 , Anadolu Üniversitesi Sosyal Bilimler Dergisi
DOI: 10.18037/ausbd.1521955
FAVORITE 0 TOTAL DOWNLOAD COUNT 982

0

982

Borsa İstanbul’da yabancı yatırımcı sayısını etkileyen faktörlerin Granger nedensellik testi ile incelenmesi
Authors: Erol Köycü , İlhan Ege
Published: 2023 , Journal of Social Sciences Institute of Mersin University
DOI: 10.55044/meusbd.1303018
FAVORITE 0 TOTAL DOWNLOAD COUNT 3443

0

3443

Avrupa Bankacılık Endeksi Volatilitesinin Garch Modelleri Kullanılarak Modellenmesi
Authors: Erol Köycü
Published: 2022 , Journal of Aksaray University Faculty of Economics and Administrative Sciences
DOI: 10.52791/aksarayiibd.988629
FAVORITE 0 TOTAL DOWNLOAD COUNT 1467

0

1467

RİSK İŞTAH ENDEKSİ İLE BİST100 ENDEKSİ ARASINDAKİ İLİŞKİ: COVİD-19 ÖNCESİ VE SONRASI DÖNEME YÖNELİK BİR ARAŞTIRMA
Authors: Erol Köycü
Published: 2022 , Research of Financial Economic and Social Studies
DOI: 10.29106/fesa.997958
FAVORITE 0 TOTAL DOWNLOAD COUNT 1676

0

1676

Causality Relationship Between Domestic Investor and Total Investor in Borsa Istanbul
Authors: Erol Köycü
Published: 2021 , The Journal of Business Science
DOI: 10.22139/jobs.956148
FAVORITE 1 TOTAL DOWNLOAD COUNT 906

1

906

Yabancı Yatırımların Pay Piyasa Getirisine Etkisi: BRICS-T Ülkeleri Üzerine Ekonometrik Bir Analiz
Authors: Erol Köycü , Mustafa Mesut Kayalı
Published: 2021 , The Journal of Accounting and Finance
DOI: 10.25095/mufad.877408
FAVORITE 0 TOTAL DOWNLOAD COUNT 915

0

915

Stock Volatility Modeling in Health Enterprises: An Econometric Survey in The Human Health and Social Services Sector
Authors: Tuğba Nur Topaloğlu , Erol Köycü
Published: 2020 , Bulletin of Economic Theory and Analysis
DOI: 10.25229/beta.720534
FAVORITE 0 TOTAL DOWNLOAD COUNT 1055

0

1055

Articles published in
Anadolu Üniversitesi Sosyal Bilimler Dergisi
Anadolu Üniversitesi Sosyal Bilimler Dergisi
BDDK Bankacılık ve Finansal Piyasalar Dergisi
BDDK Bankacılık ve Finansal Piyasalar Dergisi
Bulletin of Economic Theory and Analysis
Bulletin of Economic Theory and Analysis
Eskişehir Osmangazi University Journal of Economics and Administrative Sciences
Eskişehir Osmangazi University Journal of Economics and Administrative Sciences
Gazi Journal of Economics and Business
Gazi Journal of Economics and Business
İzmir Journal of Economics
İzmir Journal of Economics
International Journal of Management Economics and Business
International Journal of Management Economics and Business
Journal of Aksaray University Faculty of Economics and Administrative Sciences
Journal of Aksaray University Faculty of Economics and Administrative Sciences
Journal of Social Sciences Institute of Mersin University
Journal of Social Sciences Institute of Mersin University
Kastamonu Üniversitesi İktisadi ve İdari Bilimler Fakültesi Dergisi
Kastamonu Üniversitesi İktisadi ve İdari Bilimler Fakültesi Dergisi
Pamukkale University Journal of Social Sciences Institute
Pamukkale University Journal of Social Sciences Institute
Research of Financial Economic and Social Studies
Research of Financial Economic and Social Studies
The Journal of Accounting and Finance
The Journal of Accounting and Finance
The Journal of Business Science
The Journal of Business Science
Editorship
Journal of Economics and Administrative Approaches
Journal of Economics and Administrative Approaches
Section Editor
Tahlil
Tahlil
Layout Editor
Editorial Board Memberships
Journal of Economics and Administrative Approaches
Journal of Economics and Administrative Approaches
Tahlil
Tahlil

Reviews

Fiscaoeconomia
Fiscaoeconomia
International Journal of Business and Economic Studies
International Journal of Business and Economic Studies
Tahlil
Tahlil

Publications

THE MODERATING ROLE OF FINANCIAL LEVERAGE IN THE RELATIONSHIP BETWEEN MANAGER-SHAREHOLDER AGENCY COST AND FINANCIAL PERFORMANCE: A STUDY ON BIST TEXTILE LEATHER INDEX
Authors: Erol Köycü , Tuğba Nur
Published: 2025 , International Journal of Management Economics and Business
DOI: 10.17130/ijmeb.1597014
CITED 1 FAVORITE 0 TOTAL DOWNLOAD COUNT 587

1

0

587

Determination of Factors Affecting Financial Asset Investments
Authors: Erol Köycü , İlhan Ege
Published: 2025 , Eskişehir Osmangazi University Journal of Economics and Administrative Sciences
DOI: 10.17153/oguiibf.1582322
CITED 1 FAVORITE 0 TOTAL DOWNLOAD COUNT 1108

1

0

1108

POSSIBLE EFFECTS OF UNCERTAINTY FACTORS ON GREEN BOND RETURNS
Authors: Erol Köycü
Published: 2025 , Pamukkale University Journal of Social Sciences Institute
DOI: 10.30794/pausbed.1611428
CITED 2 FAVORITE 0 TOTAL DOWNLOAD COUNT 731

2

0

731

Borsa İstanbul’da yabancı yatırımcı sayısını etkileyen faktörlerin Granger nedensellik testi ile incelenmesi
Authors: Erol Köycü , İlhan Ege
Published: 2023 , Journal of Social Sciences Institute of Mersin University
DOI: 10.55044/meusbd.1303018
CITED 3 FAVORITE 0 TOTAL DOWNLOAD COUNT 3443

3

0

3443

Avrupa Bankacılık Endeksi Volatilitesinin Garch Modelleri Kullanılarak Modellenmesi
Authors: Erol Köycü
Published: 2022 , Journal of Aksaray University Faculty of Economics and Administrative Sciences
DOI: 10.52791/aksarayiibd.988629
CITED 1 FAVORITE 0 TOTAL DOWNLOAD COUNT 1467

1

0

1467

RİSK İŞTAH ENDEKSİ İLE BİST100 ENDEKSİ ARASINDAKİ İLİŞKİ: COVİD-19 ÖNCESİ VE SONRASI DÖNEME YÖNELİK BİR ARAŞTIRMA
Authors: Erol Köycü
Published: 2022 , Research of Financial Economic and Social Studies
DOI: 10.29106/fesa.997958
CITED 12 FAVORITE 0 TOTAL DOWNLOAD COUNT 1676

12

0

1676

Yabancı Yatırımların Pay Piyasa Getirisine Etkisi: BRICS-T Ülkeleri Üzerine Ekonometrik Bir Analiz
Authors: Erol Köycü , Mustafa Mesut Kayalı
Published: 2021 , The Journal of Accounting and Finance
DOI: 10.25095/mufad.877408
CITED 2 FAVORITE 0 TOTAL DOWNLOAD COUNT 915

2

0

915

Stock Volatility Modeling in Health Enterprises: An Econometric Survey in The Human Health and Social Services Sector
Authors: Tuğba Nur Topaloğlu , Erol Köycü
Published: 2020 , Bulletin of Economic Theory and Analysis
DOI: 10.25229/beta.720534
CITED 1 FAVORITE 0 TOTAL DOWNLOAD COUNT 1055

1

0

1055

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