The German DAX 30 index opened down 41.78 points, or 0.17%, at 24,690.50 on Thursday, May 21.
The UK FTSE 100 index opened down 59.89 points, or 0.57%, at 10,372.45 on Thursday, May 21.
The French CAC 40 index opened down 13.88 points, or 0.17%, at 8,103.54 on Thursday, May 21.
The Euro Stoxx 50 index opened down 17.51 points, or 0.29%, at 5958.56 on Thursday, May 21. The Spanish IBEX 35 index opened up 2.54 points, or 0.01%, at 18033.64 on Thursday, May 21. The Italian FTSE MIB index opened up 0.84 points, or 0.00%, at 49182.50 on Thursday, May 21.