European shares opened lower on Tuesday, extending a string of declines that have rattled investors throughout the week. Heightened uncertainty over monetary policy and mixed corporate earnings fed the sell‑off, dragging the FTSE 100 and the Euro Stoxx 50 into negative territory. Traders cited the volatile week as a key driver of the downturn, as risk‑off sentiment intensified across global markets.

The UK market bore the brunt, with the FTSE slipping below its 200‑day moving average as investors priced in potential rate hikes. Meanwhile, German and French blue‑chips struggled to hold gains, reflecting broader concerns about slowing growth in the eurozone. Analysts warned that continued volatility could pressure capital‑intensive sectors such as industrials and real estate. The outlook for rate‑sensitive firms remains especially fragile.

Across the region, currency markets mirrored the equity drift, with the pound and euro both edging lower against the dollar. Commodity prices slipped as demand forecasts dimmed, adding another layer of pressure on profit margins. The sell‑off underscores that investors remain wary of upside surprises, keeping European indices on a downward trajectory for now. Portfolio managers are likely to trim exposure until clearer signals emerge.