European stocks opened higher on Tuesday, supported by gains in the technology sector amid increasing optimism that the Federal Reserve will not raise interest rates during its upcoming monetary policy meeting. The Stoxx 600 index rose by 0.5% by 07:15 GMT, with the interest-sensitive technology sector index climbing by 1.5%. Shares of Embracer jumped by 5.2%, leading the gains on the Stoxx 600, after the Swedish video game group announced a restructuring program to reduce costs and investments, including spending on new product development.