Guardian Investment Management’s Biogen BIIB Stock Holding History

Guardian 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 Q2	$1.19M	Hold	5,500	–	–	0.77%	35
2026 Q1	$1.01M	Buy	5,500 +100	+2%	+$18.4K	0.8%	34
2025 Q4	$950K	Hold	5,400	–	–	0.74%	36
2025 Q3	$756K	Buy	5,400 +100	+2%	+$13.5K	0.64%	41
2025 Q2	$666K	Sell	5,300 -2,000	-27%	-$249K	0.67%	40
2025 Q1	$999K	Hold	7,300	–	–	0.84%	32
2024 Q4	$1.12M	Sell	7,300 -2,865	-28%	-$483K	0.8%	33
2024 Q3	$1.97M	Hold	10,165	–	–	1.7%	18
2024 Q2	$2.36M	Hold	10,165	–	–	1.69%	22
2024 Q1	$2.19M	Hold	10,165	–	–	1.76%	18
2023 Q4	$2.63M	Buy	10,165 +100	+1%	+$24.6K	2.22%	15
2023 Q3	$2.59M	Hold	10,065	–	–	2.35%	14
2023 Q2	$2.87M	Sell	10,065 -700	-7%	-$208K	2.44%	12
2023 Q1	$3.01M	Buy	10,765 +600	+6%	+$166K	2.26%	16
2022 Q4	$2.79M	Hold	10,165	–	–	2.63%	14
2022 Q3	$2.71M	Hold	10,165	–	–	2.75%	11
2022 Q2	$2.07M	Hold	10,165	–	–	1.8%	21
2022 Q1	$2.14M	Hold	10,165	–	–	1.66%	24
2021 Q4	$2.44M	Hold	10,165	–	–	1.7%	25
2021 Q3	$2.88M	Sell	10,165 -500	-5%	-$164K	2.12%	16
2021 Q2	$3.69M	Sell	10,665 -100	-0.9%	-$30.3K	2.53%	12
2021 Q1	$3.01M	Sell	10,765 -100	-0.9%	-$27K	2.14%	18
2020 Q4	$2.66M	Buy	10,865 +400	+4%	+$103K	2.02%	20
2020 Q3	$2.97M	Hold	10,465	–	–	2.59%	11
2020 Q2	$2.8M	Buy	10,465 +100	+1%	+$30.1K	2.54%	12
2020 Q1	$3.28M	Buy	10,365 +200	+2%	+$60.7K	3.36%	9
2019 Q4	$3.02M	Buy	10,165 +100	+1%	+$27.7K	2.4%	13
2019 Q3	$2.34M	Sell	10,065 -1,000	-9%	-$233K	2.08%	17
2019 Q2	$2.59M	Hold	11,065	–	–	2.25%	12
2019 Q1	$2.62M	Sell	11,065 -100	-0.9%	-$31.5K	2.26%	14
2018 Q4	$3.36M	Hold	11,165	–	–	3.1%	10
2018 Q3	$3.94M	Hold	11,165	–	–	3.47%	8
2018 Q2	$3.24M	Buy	11,165 +900	+9%	+$253K	3.1%	10
2018 Q1	$2.81M	Sell	10,265 -800	-7%	-$248K	3%	11
2017 Q4	$3.52M	Sell	11,065 -100	-0.9%	-$32.1K	3.72%	9
2017 Q3	$3.5M	Hold	11,165	–	–	3.86%	6
2017 Q2	$3.03M	Sell	11,165 -200	-2%	-$52.9K	3.35%	10
2017 Q1	$3.11M	Buy	+11,365	New	+$3.21M	3.38%	10

Other funds holding BIIB

Robeco Institutional Asset Management Rotterdam, Netherlands $81.4B AUM 40.71% 1-Year Est. Return

AIM

Artemis Investment Management Edinburgh, United Kingdom $11.2B AUM 80.72% 1-Year Est. Return

Swedbank Stockholm, Sweden $116B AUM 46.87% 1-Year Est. Return

AAMU

AEGON Asset Management (UK) Edinburgh, United Kingdom $9.38B AUM 48.94% 1-Year Est. Return

New York State Teachers Retirement System (NYSTRS) Albany, New York $54.2B AUM 43.77% 1-Year Est. Return

ECSS

Eurizon Capital SGR SpA Milan $37.3B AUM

ADEF

Adams Diversified Equity Fund Baltimore, Maryland $3.27B AUM 45.57% 1-Year Est. Return

Handelsbanken Fonder Stockholm, Sweden $35.1B AUM 47.76% 1-Year Est. Return

EAM

Erste Asset Management Vienna, Austria $12.9B AUM 52.69% 1-Year Est. Return

BPC

Banque Pictet & Cie Geneva 73, Switzerland $16B AUM 29.1% 1-Year Est. Return

Guardian Investment Management's BIIB Position: Q2 2026 in Review

Guardian Investment Management held its Biogen (BIIB) position steady in Q2 2026 at 5,500 shares worth $1.19M. The position accounts for 0.77% of the portfolio, ranked #35.

Guardian Investment Management first reported a position in BIIB in Q1 2017 and has held it in 38 quarters since. The position peaked at $3.94M in Q3 2018. 351 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

Guardian Investment Management held 5,500 shares of Biogen worth $1.19M as of Q2 2026.
Guardian Investment Management left its Biogen share count unchanged in Q2 2026.
Biogen made up 0.77% of Guardian Investment Management's portfolio in Q2 2026, its #35 holding.
Guardian Investment Management first reported a position in Biogen in Q1 2017 and has held it in 38 quarters since.
Guardian Investment Management's Biogen position peaked at $3.94M in Q3 2018.
351 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on Guardian Investment Management's 13F filing for Q2 2026, filed 20 Jul 2026.