Andreas Halvorsen’s Biogen BIIB Stock Holding History

Andreas Halvorsen’s Portfolio BIIB Stock Details BIIB Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2017 Q2	–	Sell	-688,765	Closed	-$188M	–	57
2017 Q1	$188M	Sell	688,765 -1,230,047	-64%	-$348M	0.83%	28
2016 Q4	$544M	Sell	1,918,812 -267,524	-12%	-$79.3M	2.47%	15
2016 Q3	$684M	Sell	2,186,336 -1,024,171	-32%	-$303M	2.95%	13
2016 Q2	$776M	Buy	3,210,507 +2,979,560	+1,290%	+$785M	3.3%	8
2016 Q1	$60.1M	Sell	230,947 -137,917	-37%	-$36.4M	0.26%	44
2015 Q4	$113M	Buy	+368,864	New	+$106M	0.43%	42
2015 Q3	–	Sell	-513,444	Closed	-$207M	–	66
2015 Q2	$207M	Buy	+513,444	New	+$206M	0.78%	34
2014 Q2	–	Sell	-388,900	Closed	-$119M	–	65
2014 Q1	$119M	Buy	+388,900	New	+$123M	0.5%	46
2013 Q4	–	Sell	-290,345	Closed	-$69.9M	–	67
2013 Q3	$69.9M	Sell	290,345 -675,943	-70%	-$151M	0.39%	44
2013 Q2	$208M	Buy	+966,288	New	+$206M	1.16%	26

Other funds holding BIIB

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

ClearBridge Investments New York $121B AUM 27.52% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Northern Trust Chicago, Illinois $860B AUM 41.15% 1-Year Est. Return

Andreas Halvorsen's BIIB Position: Q2 2017 in Review

Andreas Halvorsen sold out of Biogen (BIIB) in Q2 2017, closing a stake of 688,765 shares — an estimated $188M sold.

Andreas Halvorsen first reported a position in BIIB in Q2 2013 and held it in 10 quarters. The position peaked at $776M in Q2 2016. 992 funds tracked by Wall St. Rank hold BIIB as of Q2 2017.

Andreas Halvorsen reported no remaining Biogen position as of Q2 2017 after selling out during the quarter.
Andreas Halvorsen sold 688,765 Biogen shares in Q2 2017, an estimated $188M.
Andreas Halvorsen first reported a position in Biogen in Q2 2013 and held it in 10 quarters.
Andreas Halvorsen's Biogen position peaked at $776M in Q2 2016.
992 funds tracked by Wall St. Rank held Biogen as of Q2 2017.

Based on Viking Global Investors's 13F filing for Q2 2017, filed 14 Aug 2017.