The power tailwind may turn out to be a deadly headwind. Many analysts, had believed that the ongoing US Federal Reserve interest rate hikes will turbocharge Singapore bank stocks like DBS Group Holdings share price to high heavens. Yet that fantasy has not materialized despite the fact that US Federal Reserves had raised interest rate by 75 basis points (50 basis points on 7 May and 25 basis points on 17 March). Year-to-date, DBS Group Holdings share price had tumbled 8% instead. What has happened to the leading light of SGX?A concerned SG Wealth Builder Lifetime member has written in to enquire about the bizarre performance of Singapore bank stocks against the backdrop of rising interest rates. To be fair, US bank stocks like Bank of America and JP Morgan have performed wo