THE FACTORS AFFECTING IPO RETURN IN THAI STOCK MARKET

An an alternative for to short-term investment, IPO return is one of the most attractive investments in every stock market. In the past Stock Exchange of Thailand, the rate of stock listing or IPO issue was less when compared to the other Asian markets. After the crisis period in 1997, the number of IPO issues reduced to almost zero for a few years. Then, SET has implemented the new regulation and procedure to control all listed companied and also pursued them to follow corporate governance. in 2004, the rate of stock listing increased to almost one a week and there were number of positive returns of IPO s. This study reported 14% to 24% IPO Returns in Thai stock market during the study period. This figure is the same as the international stock markets. In addition, the factors affecting the initial return of IPOs were also disclosed. Keywords: IPO, SET For full Paper: [email protected]

Model and solution method to a simultaneous route design and frequency setting problem for a bus rapid transit system in Colombia

We propose a model and solution method to a simultaneous route design and frequency setting problem on a main corridor from one of the Bus Rapid Transit (BRT) Systems of Colombia. The proposedmodel considers objectives of users and operators in a combinatorial multi-objective optimization framework and takes into account real constraints on the operation of some Colombian BRT systems not found in previousmodels. The problem is solved heuristically by a GeneticAlgorithm which is tailored from an existing work, to consider specific characteristics of the real scenario. The methodology is validated with current data from one of the most important bus corridors in a Colombian BRT system. The results obtained improve the current solutions for this corridor. © 2017 Brazilian Operations Research Society