Iridian Asset Management’s Biogen BIIB Stock Holding History

Iridian Asset Management’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
2020 Q4	–	Sell	-4,772	Closed	-$1.35M	–	91
2020 Q3	$1.35M	Buy	+4,772	New	+$1.33M	0.03%	58
2017 Q2	–	Sell	-5,000	Closed	-$1.37M	–	82
2017 Q1	$1.37M	Sell	5,000 -5,000	-50%	-$1.41M	0.01%	68
2016 Q4	$2.84M	Sell	10,000 -6,000	-38%	-$1.78M	0.03%	62
2016 Q3	$5.01M	Hold	16,000	–	–	0.04%	53
2016 Q2	$3.87M	Hold	16,000	–	–	0.04%	50
2016 Q1	$4.17M	Buy	16,000 +2,000	+14%	+$528K	0.04%	45
2015 Q4	$4.29M	Buy	14,000 +4,000	+40%	+$1.15M	0.04%	45
2015 Q3	$2.92M	Buy	10,000 +3,000	+43%	+$991K	0.02%	51
2015 Q2	$2.83M	Buy	+7,000	New	+$2.81M	0.02%	54

Other funds holding BIIB

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

BlackRock New York $6.73T AUM 46.02% 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

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

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

Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return

JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

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

Iridian Asset Management's BIIB Position: Q4 2020 in Review

Iridian Asset Management sold out of Biogen (BIIB) in Q4 2020, closing a stake of 4,772 shares — an estimated $1.35M sold.

Iridian Asset Management first reported a position in BIIB in Q2 2015 and held it in 9 quarters. The position peaked at $5.01M in Q3 2016. 1,062 funds tracked by Wall St. Rank hold BIIB as of Q4 2020.

Iridian Asset Management reported no remaining Biogen position as of Q4 2020 after selling out during the quarter.
Iridian Asset Management sold 4,772 Biogen shares in Q4 2020, an estimated $1.35M.
Iridian Asset Management first reported a position in Biogen in Q2 2015 and held it in 9 quarters.
Iridian Asset Management's Biogen position peaked at $5.01M in Q3 2016.
1,062 funds tracked by Wall St. Rank held Biogen as of Q4 2020.

Based on Iridian Asset Management's 13F filing for Q4 2020, filed 8 Feb 2021.