Capital Research & Management Co. (World Investors)
8,786,529
9.16
-236,891
03/31/2013
T. Rowe Price Associates, Inc.
5,910,161
6.16
-836,510
03/31/2013
BlackRock Fund Advisors
5,086,777
5.30
155,455
03/31/2013
Wellington Management Co. LLP
4,954,164
5.17
1,096,524
03/31/2013
The Vanguard Group, Inc.
3,750,109
3.91
1,232,468
03/31/2013
Artisan Partners LP
3,311,666
3.45
192,102
03/31/2013
JPMorgan Investment Management, Inc.
2,589,073
2.70
149,076
03/31/2013
SSgA Funds Management, Inc.
2,445,711
2.55
-16,471
03/31/2013
Sands Capital Management LLC
1,733,896
1.81
-1,489,973
03/31/2013
Invesco PowerShares Capital Management LLC
1,071,644
1.12
54,243
03/31/2013
American Century Investment Management, Inc.
860,833
0.90
458,199
03/31/2013
Northern Trust Investments, Inc.
810,055
0.85
44,415
03/31/2013
Pinnacle Associates Ltd.
752,730
0.79
-14,186
03/31/2013
Ownership data is provided by FactSet, a third party service, and Regeneron Pharmaceuticals, Inc. does not maintain or provide information directly to this service.