Comments on: “Trading costs on the Stock Exchange of Thailand” Authors: Charoenwong C., Ding D.K., Jenwittayaroje N. Comments on: “Risk-taking behaviour during downturn: evidence of loss-chasing and

si ve A ct iv e Investment performance can be attributed from many sources. How to measure active degree of the portfolio? BenchmarkFund 1 Stock X ,Y,Z =30 % Active share Sources: Cremers and Petajisto

E280218 Our Ref: TL001/18 February 28, 2018 The Stock Exchange of Thailand 93, The Stock Exchange of Thailand Building Ratchadapisek Road, Dindaeng Bangkok 10400 Attention: The President Dear Sir

Our Ref: TL015/02 Our Ref: TL011/18 May 14, 2018 The Stock Exchange of Thailand 93, The Stock Exchange of Thailand Building Ratchadapisek Road, Dindaeng Bangkok 10400 Attention: The President Dear

Page 1 of 2 No. ACC1903/001 March 1, 2019 Subject: Approval to enter into Contract to sell of Common Stock To: President The Stock Exchange of Thailand According to the Board of Director’s Meeting No

E141117 Our Ref: TL034/17 November 14, 2017 The Stock Exchange of Thailand 93, The Stock Exchange of Thailand Building Ratchadapisek Road, Dindaeng, Bangkok 10400 Attention: The President Dear Sir

Our Ref: TL015/02 Our Ref: TL012/18 August 14, 2018 The Stock Exchange of Thailand 93, The Stock Exchange of Thailand Building Ratchadapisek Road, Dindaeng Bangkok 10400 Attention: The President Dear

Our Ref: TL015/02 Our Ref: TL014/18 November 13, 2018 The Stock Exchange of Thailand 93, The Stock Exchange of Thailand Building Ratchadapisek Road, Dindaeng Bangkok 10400 Attention: The President

.Thailand. Tel : + 66(0) 2 703 7880-1 No. SorPor 6/2563 23 March, 2020 Subject: Report of asset acquisition in “Sakun C Innovation Company Limited” Attention: Managing Director of the Stock Exchange The Stock

. Tel : + 66(0) 2 703 7880-1 No. SorPor 5/2563 23 March, 2020 Subject: Report of asset acquisition in “Blue Solar Farm3 Company Limited” Attention: Managing Director of the Stock Exchange The Stock