North Star Investment Management’s Biogen BIIB Stock Holding History

North Star Investment 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
2026 Q1	$1.03M	Sell	5,621 -21	-0.4%	-$3.87K	0.06%	254
2025 Q4	$993K	Buy	5,642 +20	+0.4%	+$3.27K	0.06%	237
2025 Q3	$788K	Hold	5,622	–	–	0.05%	273
2025 Q2	$706K	Hold	5,622	–	–	0.05%	276
2025 Q1	$769K	Hold	5,622	–	–	0.06%	270
2024 Q4	$860K	Hold	5,622	–	–	0.06%	255
2024 Q3	$1.09M	Sell	5,622 -12	-0.2%	-$2.51K	0.08%	222
2024 Q2	$1.31M	Hold	5,634	–	–	0.1%	198
2024 Q1	$1.21M	Hold	5,634	–	–	0.09%	211
2023 Q4	$1.46M	Sell	5,634 -5	-0.1%	-$1.23K	0.11%	185
2023 Q3	$1.45M	Sell	5,639 -20	-0.4%	-$5.35K	0.12%	178
2023 Q2	$1.61M	Hold	5,659	–	–	0.13%	171
2023 Q1	$1.57M	Buy	5,659 +5,551	+5,140%	+$1.54M	0.13%	176
2022 Q4	$29.9K	Sell	108 -53	-33%	-$15K	﹤0.01%	686
2022 Q3	$43K	Sell	161 -32	-17%	-$6.8K	﹤0.01%	565
2022 Q2	$39K	Hold	193	–	–	﹤0.01%	600
2022 Q1	$41K	Sell	193 -192	-50%	-$41.8K	﹤0.01%	623
2021 Q4	$92K	Buy	385 +198	+106%	+$50.9K	0.01%	497
2021 Q3	$53K	Sell	187 -9	-5%	-$2.95K	﹤0.01%	575
2021 Q2	$68K	Buy	196 +24	+14%	+$7.27K	0.01%	534
2021 Q1	$48K	Sell	172 -416	-71%	-$112K	﹤0.01%	558
2020 Q4	$144K	Buy	588 +64	+12%	+$16.5K	0.02%	386
2020 Q3	$149K	Buy	524 +520	+13,000%	+$145K	0.02%	378
2020 Q2	$1K	Hold	4	–	–	﹤0.01%	931
2020 Q1	$1K	Buy	+4	New	+$1.21K	﹤0.01%	948
2019 Q3	–	Sell	-2,300	Closed	-$538K	–	1090
2019 Q2	$538K	Buy	2,300 +517	+29%	+$119K	0.06%	266
2019 Q1	$421K	Buy	+1,783	New	+$561K	0.05%	289
2018 Q3	–	Sell	-37	Closed	-$11K	–	1085
2018 Q2	$11K	Hold	37	–	–	﹤0.01%	830
2018 Q1	$10K	Sell	37 -6	-14%	-$1.86K	﹤0.01%	842
2017 Q4	$14K	Hold	43	–	–	﹤0.01%	771
2017 Q3	$13K	Buy	+43	New	+$12.7K	﹤0.01%	795
2017 Q1	–	Sell	-15	Closed	-$4K	–	1052
2016 Q4	$4K	Hold	15	–	–	﹤0.01%	849
2016 Q3	$5K	Hold	15	–	–	﹤0.01%	701
2016 Q2	$4K	Hold	15	–	–	﹤0.01%	713
2016 Q1	$4K	Hold	15	–	–	﹤0.01%	672
2015 Q4	$5K	Sell	15 -89	-86%	-$25.6K	﹤0.01%	654
2015 Q3	$30K	Buy	104 +23	+28%	+$7.59K	0.01%	452
2015 Q2	$33K	Hold	81	–	–	0.01%	432
2015 Q1	$34K	Buy	81 +15	+23%	+$5.91K	0.01%	422
2014 Q4	$22K	Buy	+66	New	+$21.4K	﹤0.01%	467

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

North Star Investment Management's BIIB Position: Q1 2026 in Review

North Star Investment Management reduced its Biogen (BIIB) stake by 0.37% in Q1 2026, selling an estimated $3.87K and leaving 5,621 shares worth $1.03M. The position accounts for 0.06% of the portfolio, ranked #254.

North Star Investment Management first reported a position in BIIB in Q4 2014 and has held it in 40 quarters since. The position peaked at $1.61M in Q2 2023. 1,003 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.

North Star Investment Management held 5,621 shares of Biogen worth $1.03M as of Q1 2026.
North Star Investment Management sold 21 Biogen shares in Q1 2026, an estimated $3.87K.
Biogen made up 0.06% of North Star Investment Management's portfolio in Q1 2026, its #254 holding.
North Star Investment Management first reported a position in Biogen in Q4 2014 and has held it in 40 quarters since.
North Star Investment Management's Biogen position peaked at $1.61M in Q2 2023.
1,003 funds tracked by Wall St. Rank held Biogen as of Q1 2026.

Based on North Star Investment Management's 13F filing for Q1 2026, filed 23 Apr 2026.