Most sectors on the STOXX 600 were in negative territory, with real estate .SX86P and mining stocks .SXPP leading the losses, while the technology sector .SX8P was boosted by strong results from ASML Holding NV ASML.AS. Chip equipment maker ASML reported better-than-expected third-quarter sales and profit and said it did not expect a large impact from U.S. sanctions on China. By Amruta Khandekar Oct 19 (Reuters) - European shares reversed early gains on Wednesday, as investors fretted about runaway inflation and aggressive monetary policy tightening, even as upbeat corporate earnings soothed some fears about a recession.