| 21. Februar 2012 | S.A.C. Capital Advisors, L.P. | 1,33 % | offen |
| 20. Februar 2012 | Highbridge Capital Management LLC | 0,68 % | offen |
| 17. Februar 2012 | Egerton Capital Limited AS General Partner of Egerton Capital Limited Partnership | 0,99 % | offen |
| 15. Februar 2012 | Egerton Capital Limited AS General Partner of Egerton Capital Limited Partnership | 0,81 % | offen |
| 15. Februar 2012 | Highbridge Capital Management LLC | 0,78 % | offen |
| 13. Februar 2012 | UBS O´connor Limited | 0,88 % | offen |
| 10. Februar 2012 | UBS O´connor Limited | 0,78 % | offen |
| 9. Februar 2012 | GLG Partners LP | 0,56 % | offen |
| 7. Februar 2012 | UBS O´connor Limited | 0,85 % | offen |
| 2. Februar 2012 | UBS O´connor Limited | 0,75 % | offen |
| 1. Februar 2012 | UBS O´connor Limited | 0,65 % | offen |
| 26. Januar 2012 | Highbridge Capital Management LLC | 0,87 % | offen |
| 26. Januar 2012 | Egerton Capital Limited AS General Partner of Egerton Capital Limited Partnership | 0,64 % | offen |
| 25. Januar 2012 | S.A.C. Capital Advisors, L.P. | 1,42 % | offen |
| 24. Januar 2012 | S.A.C. Capital Advisors, L.P. | 1,40 % | offen |
| 20. Januar 2012 | S.A.C. Capital Advisors, L.P. | 1,21 % | offen |
| 18. Januar 2012 | Highbridge Capital Management LLC | 0,91 % | offen |
| 17. Januar 2012 | Highbridge Capital Management LLC | 0,88 % | offen |
| 12. Januar 2012 | S.A.C. Capital Advisors, L.P. | 1,15 % | offen |
| 11. Januar 2012 | Highbridge Capital Management LLC | 1,00 % | offen |
| 9. Januar 2012 | S.A.C. Capital Advisors, L.P. | 1,22 % | offen |
| 9. Januar 2012 | Highbridge Capital Management LLC | 1,07 % | offen |
| 6. Januar 2012 | S.A.C. Capital Advisors, L.P. | 1,00 % | offen |
| 4. Januar 2012 | Highbridge Capital Management LLC | 1,17 % | offen |
| 4. Januar 2012 | S.A.C. Capital Advisors, L.P. | 0,96 % | offen |
| 29. Dezember 2011 | S.A.C. Capital Advisors, L.P. | 0,85 % | offen |
| 28. Dezember 2011 | S.A.C. Capital Advisors, L.P. | 0,80 % | offen |
| 27. Dezember 2011 | S.A.C. Capital Advisors, L.P. | 0,65 % | offen |
| 22. Dezember 2011 | S.A.C. Capital Advisors, L.P. | 0,53 % | offen |
| 14. Dezember 2011 | Highbridge Capital Management LLC | 1,29 % | offen |
| 27. November 2011 | Highbridge Capital Management LLC | 1,33 % | offen |
| 23. November 2011 | Jana Partners LLC | 0,00 % | offen |
| 21. November 2011 | Highbridge Capital Management LLC | 1,25 % | offen |
| 21. November 2011 | Jana Partners LLC | 0,63 % | offen |
| 18. November 2011 | Highbridge Capital Management LLC | 1,20 % | offen |
| 18. November 2011 | UBS O´connor Limited | 0,58 % | offen |
| 17. November 2011 | Highbridge Capital Management LLC | 1,03 % | offen |
| 16. November 2011 | Highbridge Capital Management LLC | 0,95 % | offen |
| 14. November 2011 | UBS O´connor Limited | 0,81 % | offen |
| 9. November 2011 | Jana Partners LLC | 0,87 % | offen |
| 8. November 2011 | UBS O´connor Limited | 0,74 % | offen |
| 4. November 2011 | Highbridge Capital Management LLC | 0,80 % | offen |
| 4. November 2011 | Marshall Wace LLP | 0,60 % | offen |
| 3. November 2011 | Jpmorgan Asset Management (UK) Limited | 0,53 % | offen |
| 2. November 2011 | Marshall Wace LLP | 0,54 % | offen |
| 31. Oktober 2011 | Highbridge Capital Management LLC | 0,72 % | offen |
| 31. Oktober 2011 | UBS O´connor Limited | 0,70 % | offen |
| 31. Oktober 2011 | Altair Investment Management Limited | 0,56 % | offen |
| 28. Oktober 2011 | UBS O´connor Limited | 0,58 % | offen |
| 26. Oktober 2011 | UBS O´connor Limited | 0,66 % | offen |
| 25. Oktober 2011 | UBS O´connor Limited | 0,72 % | offen |
| 24. Oktober 2011 | Highbridge Capital Management LLC | 0,94 % | offen |
| 24. Oktober 2011 | UBS O´connor Limited | 0,82 % | offen |
| 21. Oktober 2011 | Jana Partners LLC | 1,01 % | offen |
| 21. Oktober 2011 | Highbridge Capital Management LLC | 0,83 % | offen |
| 20. Oktober 2011 | Jana Partners LLC | 0,70 % | offen |
| 18. Oktober 2011 | Highbridge Capital Management LLC | 0,77 % | offen |
| 17. Oktober 2011 | Alden Global Value Recovery Master Fund, L.P. | 0,91 % | offen |
| 17. Oktober 2011 | Highbridge Capital Management LLC | 0,82 % | offen |
| 11. Oktober 2011 | UBS O´connor Limited | 0,60 % | offen |
| 10. Oktober 2011 | UBS O´connor Limited | 0,76 % | offen |
| 6. Oktober 2011 | UBS O´connor Limited | 0,84 % | offen |
| 5. Oktober 2011 | UBS O´connor Limited | 1,03 % | offen |
| 5. Oktober 2011 | Highbridge Capital Management LLC | 0,74 % | offen |
| 4. Oktober 2011 | Highbridge Capital Management LLC | 0,83 % | offen |
| 3. Oktober 2011 | Highbridge Capital Management LLC | 0,91 % | offen |
| 30. September 2011 | UBS O´connor Limited | 0,93 % | offen |
| 29. September 2011 | UBS O´connor Limited | 0,71 % | offen |
| 26. September 2011 | Highbridge Capital Management LLC | 1,01 % | offen |
| 22. September 2011 | Alden Global Value Recovery Master Fund, L.P. | 1,11 % | offen |
| 22. September 2011 | Pictet Asset Management | 0,55 % | offen |
| 21. September 2011 | Alden Global Value Recovery Master Fund, L.P. | 0,82 % | offen |
| 20. September 2011 | Highbridge Capital Management LLC | 0,98 % | offen |
| 15. September 2011 | Highbridge Capital Management LLC | 1,03 % | offen |
| 14. September 2011 | Highbridge Capital Management LLC | 0,97 % | offen |
| 5. September 2011 | Jana Partners LLC | 0,68 % | offen |
| 31. August 2011 | Highbridge Capital Management LLC | 0,87 % | offen |
| 29. August 2011 | Highbridge Capital Management LLC | 0,72 % | offen |
| 26. August 2011 | Highbridge Capital Management LLC | 0,63 % | offen |
| 25. August 2011 | Highbridge Capital Management LLC | 0,53 % | offen |
| 25. Juli 2011 | Alden Global Value Recovery Master Fund, L.P. | 0,52 % | offen |
| 19. Juli 2011 | Alden Global Value Recovery Master Fund, L.P. | 0,93 % | offen |
| 5. Juli 2011 | Alden Global Value Recovery Master Fund, L.P. | 0,88 % | offen |
| 24. Juni 2011 | Cygnus Asset Management Sgiic,s.a | 0,24 % | offen |
| 23. Juni 2011 | Cygnus Asset Management Sgiic,s.a | 0,71 % | offen |
| 22. Juni 2011 | Cygnus Asset Management Sgiic,s.a | 0,81 % | offen |
| 13. Mai 2011 | Cygnus Asset Management Sgiic,s.a | 0,92 % | offen |
| 6. Mai 2011 | Cygnus Asset Management Sgiic,s.a | 0,80 % | offen |
| 5. Mai 2011 | Cygnus Asset Management Sgiic,s.a | 0,67 % | offen |
| 18. April 2011 | Cygnus Asset Management Sgiic,s.a | 0,57 % | offen |
| 13. April 2011 | Cygnus Asset Management Sgiic,s.a | 0,74 % | offen |
| 17. März 2011 | Cygnus Asset Management Sgiic,s.a | 0,59 % | offen |
| 16. März 2011 | Cygnus Asset Management Sgiic,s.a | 0,83 % | offen |
| 14. März 2011 | Cygnus Asset Management Sgiic,s.a | 1,14 % | offen |
| 9. März 2011 | Cygnus Asset Management Sgiic,s.a | 0,69 % | offen |
| 9. März 2011 | Egerton Capital Limited AS General Partner of Egerton Capital Limited Partnership | 0,53 % | offen |
| 25. Februar 2011 | Egerton Capital Limited AS General Partner of Egerton Capital Limited Partnership | 0,76 % | offen |
| 7. Januar 2011 | Egerton Capital Limited AS General Partner of Egerton Capital Limited Partnership | 0,80 % | offen |
| 29. Dezember 2010 | Egerton Capital Limited AS General Partner of Egerton Capital Limited Partnership | 0,77 % | offen |
| 10. Dezember 2010 | Egerton Capital Limited AS General Partner of Egerton Capital Limited Partnership | 0,81 % | offen |
| 29. November 2010 | Egerton Capital Limited AS General Partner of Egerton Capital Limited Partnership | 1,20 % | offen |
| 24. November 2010 | Oxford Asset Management | 0,55 % | offen |
| 17. November 2010 | Oxford Asset Management | 0,66 % | offen |
| 8. November 2010 | Oxford Asset Management | 0,72 % | offen |
| 8. November 2010 | UBS O´connor Limited | 0,53 % | offen |