Thesis (M.S.)--Chulalongkorn University, 2015

The goal of this paper is to study the profitability of momentum strategy based on the timing of 52-week high price in the Stock Exchange of Thailand during the period of January 2005 to December 2015. The results show that stocks that recently achieved the 52-week high price can significantly provide more superior returns than stocks that achieved the 52-week high price in the distant past. The bias agianst 52-week high price will increases if stocks has been traded at this price level shortly. Investors are uncomfortable to bid higher price. But if stock price breaks out 52-week high price, there will be enough momentum to continue the price move in favorable direction. In addition, combining momentum strategy based on the timing of 52-week high price with both momentum strategy based on the nearness of current price to the 52-week high price and value investing strategy significantly increases the profitability compared to momentum strategy based on the timing of 52-week high price.