European stocks reached their highest level in a week on Thursday, with chip stocks lifting the technology sector after leading NVIDIA company beat expectations by a wide margin in its quarterly revenue forecast, and falling bond yields contributed to improving risk appetite.

By 0707 GMT, the pan-European Stoxx 600 index rose 1 percent and started trading higher for the fourth consecutive session.

Technology stocks jumped 1.8 percent, led by chip stocks after NVIDIA, the world's largest chipmaker by market value, expected higher-than-expected revenue and also announced a share buyback programme.

Shares of ASM International, BE Semiconductors, ASML Holdings and Extron rose in early trading, ranging between 2.5 percent and 3.5 percent.

European retail stocks rose 1.3 percent, after falling more than 1 percent in the previous session.

The decline in bond yields in Europe also gave a boost to stocks, with German bond yields, which are considered the benchmark for the region, falling to 2.46 percent.