Ardsley Advisory Partners’s Biogen BIIB Stock Holding History

Ardsley Advisory Partners’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	-250	Closed	-$71K	–	143
2020 Q3	$71K	Buy	+250	New	+$69.7K	0.01%	139
2020 Q1	–	Sell	-1,500	Closed	-$445K	–	112
2019 Q4	$445K	Buy	+1,500	New	+$416K	0.07%	105
2015 Q3	–	Sell	-1,000	Closed	-$406K	–	149
2015 Q2	$406K	Buy	+1,000	New	+$401K	0.05%	123
2014 Q4	–	Sell	-1,500	Closed	-$496K	–	191
2014 Q3	$496K	Hold	1,500	–	–	0.07%	115
2014 Q2	$473K	Buy	+1,500	New	+$451K	0.06%	160

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

Ardsley Advisory Partners's BIIB Position: Q4 2020 in Review

Ardsley Advisory Partners sold out of Biogen (BIIB) in Q4 2020, closing a stake of 250 shares — an estimated $71K sold.

Ardsley Advisory Partners first reported a position in BIIB in Q2 2014 and held it in 5 quarters. The position peaked at $496K in Q3 2014. 1,062 funds tracked by Wall St. Rank hold BIIB as of Q4 2020.

Ardsley Advisory Partners reported no remaining Biogen position as of Q4 2020 after selling out during the quarter.
Ardsley Advisory Partners sold 250 Biogen shares in Q4 2020, an estimated $71K.
Ardsley Advisory Partners first reported a position in Biogen in Q2 2014 and held it in 5 quarters.
Ardsley Advisory Partners's Biogen position peaked at $496K in Q3 2014.
1,062 funds tracked by Wall St. Rank held Biogen as of Q4 2020.

Based on Ardsley Advisory Partners's 13F filing for Q4 2020, filed 16 Feb 2021.