The SET index fell 1.8% in August 2026 to 1,595.16 after five monthly gains, pressured by rising US bond yields. Foreign investors sold 24,681 million baht in August but are still net buyers of 51,183 million baht for the first eight months. Listed companies' first-half net profit rose 22.2%. For a small business owner, this is market background: it does not change your own costs, credit or pricing. The article points to year-end support from government spending and the high tourism season, which may matter if your sales depend on tourists.