Germany's DAX 30 index opened down 40.37 points, or 0.17%, at 24,334.50 points on Monday, August 18.
The UK's FTSE 100 index opened up 20.25 points, or 0.22%, at 9,159.15 points on Monday, August 18.
France's CAC 40 index opened up 1.90 points, or 0.02%, at 7,925.35 points on Monday, August 18.
The Stoxx 50 index opened down 7.56 points, or 0.14%, at 5,441.05 points on Monday, August 18.
The Spanish IBEX 35 index opened down 8.88 points, or 0.06%, at 15,272.92 points on Monday, August 18.
The Italian FTSE MIB index opened up 111.03 points, or 0.26%, at 42,765.00 points on Monday, August 18.