Bangkok--10 Jul--SET The Stock Exchange of Thailand (SET)’s Index Committee has announced that, effective July 14, additional criteria will apply in the selection of listed companies as constituents of the SET50 and SET100 Indices. For example, the early entry rule will allow a listed firm with sufficiently large market capitalization to be included in the SET50 or SET100 from its first trading day, without waiting for periodic adjustment in January or June. This will strengthen the validity of the indices as market indicators, Research Institute Executive Director Kobsak Pootrakool, Ph.D., said. “Examples of large company are company with market capitalization greater than 1% of SET’s market capitalization or are expected to be large as top 20 of SET50 constituents. In the same time, SET will remove the smallest market capitalization stock from SET50 Index and replace it in the Replacement List.” Dr.Kobsak explained. This new Early Entry rule will not apply for a newly listed company resulting from Merger and Acquisition. Instead, SET will use certain rules for Merger and Acquisition on that company. SET’s Index Committee also declared that, when a vacancy occurs in the SET50 or SET100 lists, the largest company on the replacement list will become a constituent. When a stock is to be removed from a constituent list, the smallest stock, ranked by market capitalization based on its most recent closing price, will join the replacement list. The Exchange will publicly announce such changes to investors, Dr. Kobsak concluded. Another new rule is that, when a SET50 and SET100 Index constituent stock is suspended for 20 trading days or more, SET will exclude it from the index.