PKO Investment Management Joint-Stock’s Biogen BIIB Stock Holding History

PKO Investment Management Joint-Stock’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	$411K	Buy	1,900 +600	+46%	+$115K	0.03%	207
2026 Q1	$238K	Sell	1,300 -700	-35%	-$129K	0.02%	204
2025 Q4	$352K	Sell	2,000 -4,000	-67%	-$653K	0.03%	196
2025 Q3	$840K	Sell	6,000 -1,800	-23%	-$243K	0.07%	155
2025 Q2	$980K	Hold	7,800	–	–	0.11%	128
2025 Q1	$1.07M	Hold	7,800	–	–	0.12%	118
2024 Q4	$1.19M	Buy	7,800 +1,300	+20%	+$219K	0.15%	94
2024 Q3	$1.26M	Buy	6,500 +3,000	+86%	+$628K	0.16%	94
2024 Q2	$811K	Hold	3,500	–	–	0.1%	125
2024 Q1	$758K	Buy	3,500 +1,500	+75%	+$351K	0.09%	128
2023 Q4	$518K	Hold	2,000	–	–	0.06%	130
2023 Q3	$514K	Buy	2,000 +1,200	+150%	+$321K	0.07%	122
2023 Q2	$228K	Hold	800	–	–	0.03%	143
2023 Q1	$222K	Buy	+800	New	+$221K	0.03%	140
2022 Q4	–	Sell	-1,400	Closed	-$374K	–	136
2022 Q3	$374K	Hold	1,400	–	–	0.06%	120
2022 Q2	$286K	Buy	+1,400	New	+$286K	0.04%	119

Other funds holding BIIB

Pictet Asset Management Carouge, Switzerland $105B AUM 38.07% 1-Year Est. Return

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

Sumitomo Mitsui Trust Group Minato-Ku, Tokyo, Japan $175B AUM 40.63% 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

New York State Common Retirement Fund Albany, New York $79.3B AUM 43.63% 1-Year Est. Return

PKO Investment Management Joint-Stock's BIIB Position: Q2 2026 in Review

PKO Investment Management Joint-Stock increased its Biogen (BIIB) stake by 46% in Q2 2026, buying an estimated $115K and bringing the position to 1,900 shares worth $411K. The position accounts for 0.03% of the portfolio, ranked #207.

PKO Investment Management Joint-Stock first reported a position in BIIB in Q2 2022 and has held it in 16 quarters since. The position peaked at $1.26M in Q3 2024. 376 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

PKO Investment Management Joint-Stock held 1,900 shares of Biogen worth $411K as of Q2 2026.
PKO Investment Management Joint-Stock bought 600 Biogen shares in Q2 2026, an estimated $115K.
Biogen made up 0.03% of PKO Investment Management Joint-Stock's portfolio in Q2 2026, its #207 holding.
PKO Investment Management Joint-Stock first reported a position in Biogen in Q2 2022 and has held it in 16 quarters since.
PKO Investment Management Joint-Stock's Biogen position peaked at $1.26M in Q3 2024.
376 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on PKO Investment Management Joint-Stock's 13F filing for Q2 2026, filed 20 Jul 2026.