Investors & Media

Ownership Profile

Ownership Profile

Top Holders

Holder Shares Held % O/S Share Change Filing Date
Fidelity Management & Research Company 20,947,127 15.04 -- 3/31/20
The Vanguard Group, Inc. 12,053,561 8.65 87,169 3/31/20
Baillie Gifford & Co. 8,745,683 6.28 -44,342 3/31/20
Bellevue Asset Management AG 8,379,642 6.01 -52,178 3/31/20
ClearBridge Investments, LLC 8,034,264 5.77 86,688 3/31/20
BlackRock Institutional Trust Company, N.A. 6,704,413 4.82 -250,741 3/31/20
Biogen Inc 5,750,577 4.09 -5,750,576 12/31/19
Wellington Management Company, LLP 3,985,217 2.86 -2,752,639 3/31/20
State Street Global Advisors (US) 3,892,894 2.79 45,509 3/31/20
T. Rowe Price Associates, Inc. 3,762,445 2.70 1,898,009 3/31/20

Top Holders: Mutual Funds

Fund Shares Held % O/S Share Change Filing Date
Fidelity Growth Company Fund 8,467,414 6.08 -47,030 3/31/20
BB Biotech Fd 7,907,255 5.68 -87,700 3/31/20
Vanguard Total Stock Market Index Fund 3,717,803 2.67 64,154 3/31/20
Vanguard Small-Cap Index Fund 3,240,446 2.33 -1,504 2/29/20
ClearBridge Aggressive Growth Fund 2,306,791 1.66 -- 3/31/20
Fidelity Series Growth Company Fund 2,085,834 1.50 -- 3/31/20
Ivy Science and Technology Fund 2,022,117 1.45 -23,830 3/31/20
Vanguard Small-Cap Growth Index Fund 1,879,293 1.35 -20,864 2/29/20
Vanguard Extended Market Index Fund 1,824,569 1.31 6,267 3/31/20
Fidelity Select Biotechnology Portfolio 1,773,977 1.27 -- 3/31/20

* Insider values reflect direct beneficial ownership.

Copyright Thomson Reuters Corporation