Price of Kuwaiti crude went up 52 cents to USD 123.57 per barrel on Tuesday, in comparison to USD 123.05 pb the day before, the state-run Kuwait Petroleum Corporation (KPC) said Wednesday. Oil prices are stable at the moment after a wide spread optimism in global markets. This would lead to an increase in retail sales in the US markets. The rates of the crude have been on the rise due to various geopolitical factors, the Iranian question and speculations on the international energy markets.