European equities rebounded on Wednesday, with the pan-European STOXX 600 gaining 0.7% and Germany's DAX and London's FTSE 100 each advancing 0.7%. Technology and semiconductor-equipment stocks led the recovery after U.S. President Donald Trump said leading technology executives had agreed to voluntary safety standards for artificial intelligence development and reiterated support for rapid data-center expansion. The comments eased concerns about regulatory obstacles and potential capital-spending cuts after recent model-training pauses at OpenAI. Investors were also preparing for German August retail sales and employment data, French preliminary inflation and September German CPI figures. In the United States, markets focused on the August Personal Consumption Expenditures price index, the Federal Reserve's preferred inflation gauge, with underlying price pressures expected to remain unchanged from July. An unchanged reading could support rate-sensitive equities by reinforcing expectations that the Federal Reserve may not tighten beyond current market pricing, particularly as benchmark Treasury yields remain near multi-decade highs. Traders were also watching remarks from European Central Bank official Frank Elderson on the euro area's growth outlook. Despite Wednesday's rebound, the STOXX 600 remained on course for a near 2% monthly decline in September, which would be its first monthly fall in six months, after sovereign yields, energy costs and artificial-intelligence-sector development challenges weighed on European equity valuations.