Laurion Capital Management’s Biogen BIIB Stock Holding History

Laurion Capital 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 Q2	–	Sell	-20,000	Closed	-$6.33M	–	919
2020 Q1	$6.33M	Sell	20,000 -21,500	-52%	-$6.52M	0.07%	211
2019 Q4	$12.3M	Sell	41,500 -105,500	-72%	-$29.3M	0.09%	191
2019 Q3	$34.2M	Buy	147,000 +68,600	+88%	+$16M	0.25%	91
2019 Q2	$18.3M	Buy	+78,400	New	+$18.1M	0.18%	130
2019 Q1	–	Sell	-62,400	Closed	-$18.8M	–	865
2018 Q4	$18.8M	Buy	62,400 +58,500	+1,500%	+$18.7M	0.33%	65
2018 Q3	$1.38M	Buy	+3,900	New	+$1.34M	0.01%	610
2017 Q4	–	Sell	-15,300	Closed	-$4.79M	–	1532
2017 Q3	$4.79M	Buy	+15,300	New	+$4.53M	0.02%	523
2017 Q1	–	Sell	-25,600	Closed	-$7.26M	–	1295
2016 Q4	$7.26M	Buy	25,600 +14,400	+129%	+$4.27M	0.07%	280
2016 Q3	$3.51M	Buy	+11,200	New	+$3.32M	0.03%	383
2014 Q4	–	Sell	-30,000	Closed	-$9.92M	–	312
2014 Q3	$9.92M	Hold	30,000	–	–	0.21%	110
2014 Q2	$9.46M	Buy	+30,000	New	+$9.03M	0.2%	138

Other funds holding BIIB

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

Laurion Capital Management's BIIB Position: Q1 2026 in Review

Laurion Capital Management sold out of Biogen (BIIB) in Q1 2026, closing a stake of 5,033 shares — an estimated $886K sold.

Laurion Capital Management first reported a position in BIIB in Q1 2016 and held it in 19 quarters. The position peaked at $39.6M in Q4 2018. 1,004 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.

Laurion Capital Management reported no remaining Biogen position as of Q1 2026 after selling out during the quarter.
Laurion Capital Management sold 5,033 Biogen shares in Q1 2026, an estimated $886K.
Laurion Capital Management first reported a position in Biogen in Q1 2016 and held it in 19 quarters.
Laurion Capital Management's Biogen position peaked at $39.6M in Q4 2018.
1,004 funds tracked by Wall St. Rank held Biogen as of Q1 2026.

Based on Laurion Capital Management's 13F filing for Q1 2026, filed 14 May 2026.