Chulalongkorn University Theses and Dissertations (Chula ETD)

Other Title (Parallel Title in Other Language of ETD)

การซื้อขายหลักทรัพย์โดยใช้ข้อมูลภายในใน บริษัท ครอบครัว: หลักฐานจากประเทศไทย

Year (A.D.)


Document Type

Independent Study

First Advisor

Suparatana Tanthanongsakkun


Faculty of Commerce and Accountancy (คณะพาณิชยศาสตร์และการบัญชี)

Department (if any)

Department of Banking and Finance (ภาควิชาการธนาคารและการเงิน)

Degree Name

Master of Science

Degree Level

Master's Degree

Degree Discipline





This study examines the profitability of corporate insider trading in Thailand's stock market and whether the abnormal return depends on the company's characteristics and insider characteristics. The result shows that there is a significant abnormal return on corporate insider trading transactions. The difference in ownership structure is also important, with the results supporting that insider trading by family firms is more profitable than non-family firms. Moreover, the finding indicates that the trading of CEOs has more valuable information about the company's prospects than other insiders.



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