<h1>Federal funding lapse delays economic reports, heightening market uncertainty as tech-driven rally raises concentration and bubble concerns</h1> A US federal government funding lapse following failed congressional negotiations has delayed key economic reports, increasing market uncertainty as investors weigh the impact on monetary policy expectations; major tech sector buying has nonetheless pushed US benchmarks to records while prompting concerns about concentration and a potential speculative bubble. Regional Asian markets were mixed amid holiday closures and corporate AI-related deals that boosted some technology and chip stocks but prompted profit-taking elsewhere. Energy and currency moves were modest; ongoing political stalemate and data gaps elevate legal and regulatory risks for federal employment actions and market oversight.