By Anant Chandak and Indradip Ghosh BENGALURU (Reuters) -The Swiss National Bank will hold its policy rate at zero on September 25 and throughout 2026 due to inflation remaining on target and the currency holding steady, according to a majority of economists in a Reuters poll. With the SNB already having the lowest interest rate among major central banks and inflation gradually picking up - although remaining very low - the bar is high for rates to go negative, as they were from December 2014 until Septe ...