(TASCO), knew or possessed an inside information material which might affect to positive change in the price of TIPCO's share which was the fact that the distribution of interim dividend payment (No.2

Mr. Sommart Dhupchinda Mr. Sommart Dhupchinda colluded with Miss Laksana Supsakorn who was the insider which knew or possessed an inside information material which might affect to positive change in

which might affect to positive change in the price of CHG's share which was the fact that the CHG's Q3/2019 performance which would significantly improve because of receive a huge medical

positive change in the price of COL's share which was the fact that a subsidiary of a public company limited, shall make a tender offer to purchase all of COL’s shares at higher price than their market

Miss Patcharapat Tongwaen Miss Patcharapat Tongwaen colluded with Mr. Worawoot Ounjai who was the insider which knew or possessed an inside information material which might affect to positive change

of voluntary information disclosure via social media, firms would be facing incentives to only release positive news…but do they? • Trueman (1997) proposes a model showing that rational managers also

. • In other words, firms prefer reporting small profits to reporting losses, showing increasing earnings over previous periods’ earnings, and announcing positive earnings surprises relative to analysts

., 2009). Their evidence indicates that there are valuation premiums for firms surpassing three benchmarks. Several studies suggest that incremental positive effects on prices or returns, also known as

provide a margin of safety with a potential positive returns. Hypothesis construction • Result expectations: Types of investors Total volume imbalances Marketable volume imbalances Retail investors

if the value of their investment decreases Source: Stanford Graduate School of Business Sustainable investment ในตา่งประเทศ SEC Classification : ใชภ้ายใน (Internal) 4 Negative spread Positive spread