Optiver Holding’s Biogen BIIB Stock Holding History

Optiver Holding’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
2026 Q2	–	Sell	-39	Closed	-$7.15K	–	2801
2026 Q1	$7.15K	Buy	+39	New	+$7.19K	﹤0.01%	1309
2025 Q3	–	Sell	-16,550	Closed	-$2.08M	–	2691
2025 Q2	$2.08M	Buy	+16,550	New	+$2.06M	﹤0.01%	272
2024 Q1	–	Sell	-1	Closed	-$259	–	678
2023 Q4	$259	Buy	+1	New	+$246	﹤0.01%	479
2022 Q4	–	Sell	-64	Closed	-$17K	–	446
2022 Q3	$17K	Buy	+64	New	+$13.6K	﹤0.01%	337
2021 Q3	–	Sell	-60	Closed	-$21K	–	725
2021 Q2	$21K	Buy	+60	New	+$18.2K	﹤0.01%	359

Other funds holding BIIB

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

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 Capital Management Malvern, Pennsylvania $4.68T AUM

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

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

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

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

Norges Bank Oslo, Norway $1T AUM

Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Optiver Holding's BIIB Position: Q2 2026 in Review

Optiver Holding sold out of Biogen (BIIB) in Q2 2026, closing a stake of 39 shares — an estimated $7.15K sold.

Optiver Holding first reported a position in BIIB in Q2 2021 and held it in 5 quarters. The position peaked at $2.08M in Q2 2025. 1,044 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

Optiver Holding reported no remaining Biogen position as of Q2 2026 after selling out during the quarter.
Optiver Holding sold 39 Biogen shares in Q2 2026, an estimated $7.15K.
Optiver Holding first reported a position in Biogen in Q2 2021 and held it in 5 quarters.
Optiver Holding's Biogen position peaked at $2.08M in Q2 2025.
1,044 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on Optiver Holding's 13F filing for Q2 2026, filed 12 Aug 2026.