Market View: Federal Reserve keeps rates steady; Wall Street AI heavyweights add combined half a trillion dollars in stock market value after strong earnings from Meta and Microsoft; OpenAI reportedly hits US$12B in annualised revenue; US trade deal with South Korea, Trump’s latest tariff salvo on India, Brazil; Grab reported Q2 2025 earnings of US$35M, reversing earlier losses; Seatrium, Keppel, S-Reits to watch