Matthew Hamilton Rosenberg’s Biogen BIIB Stock Holding History

Matthew Hamilton Rosenberg’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	$7.56K	Hold	35	–	–	﹤0.01%	658
2026 Q1	$6.42K	Hold	35	–	–	﹤0.01%	659
2025 Q4	$6.16K	Hold	35	–	–	﹤0.01%	671
2025 Q3	$4.9K	Hold	35	–	–	﹤0.01%	695
2025 Q2	$4.4K	Hold	35	–	–	﹤0.01%	736
2025 Q1	$4.79K	Hold	35	–	–	﹤0.01%	707
2024 Q4	$5.35K	Sell	35 -9	-20%	-$1.52K	﹤0.01%	685
2024 Q3	$8.53K	Hold	44	–	–	﹤0.01%	644
2024 Q2	$10.2K	Sell	44 -347	-89%	-$75.4K	﹤0.01%	588
2024 Q1	$84K	Hold	391	–	–	0.02%	342
2023 Q4	$101K	Sell	391 -22	-5%	-$5.4K	0.03%	305
2023 Q3	$106K	Hold	413	–	–	0.04%	269
2023 Q2	$118K	Sell	413 -72	-15%	-$21.4K	0.04%	261
2023 Q1	$135K	Hold	485	–	–	0.04%	251
2022 Q4	$134K	Buy	485 +22	+5%	+$6.21K	0.05%	255
2022 Q3	$124K	Buy	463 +9	+2%	+$1.91K	0.05%	244
2022 Q2	$96K	Buy	454 +345	+317%	+$70.5K	0.04%	305
2022 Q1	$23K	Hold	109	–	–	0.01%	541
2021 Q4	$26K	Sell	109 -25	-19%	-$6.43K	0.01%	496
2021 Q3	$38K	Buy	134 +25	+23%	+$8.19K	0.02%	431
2021 Q2	$38K	Hold	109	–	–	0.02%	398
2021 Q1	$30K	Sell	109 -28	-20%	-$7.55K	0.02%	395
2020 Q4	$34K	Sell	137 -45	-25%	-$11.6K	0.02%	369
2020 Q3	$52K	Sell	182 -81	-31%	-$22.6K	0.04%	300
2020 Q2	$70K	Sell	263 -100	-28%	-$30.1K	0.06%	251
2020 Q1	$115K	Buy	+363	New	+$110K	0.11%	102

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

Matthew Hamilton Rosenberg's BIIB Position: Q2 2026 in Review

Matthew Hamilton Rosenberg held its Biogen (BIIB) position steady in Q2 2026 at 35 shares worth $7.56K. The position accounts for ﹤0.01% of the portfolio, ranked #658.

Matthew Hamilton Rosenberg first reported a position in BIIB in Q1 2020 and has held it in 26 quarters since. The position peaked at $135K in Q1 2023. 1,036 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

Matthew Hamilton Rosenberg held 35 shares of Biogen worth $7.56K as of Q2 2026.
Matthew Hamilton Rosenberg left its Biogen share count unchanged in Q2 2026.
Biogen made up ﹤0.01% of Matthew Hamilton Rosenberg's portfolio in Q2 2026, its #658 holding.
Matthew Hamilton Rosenberg first reported a position in Biogen in Q1 2020 and has held it in 26 quarters since.
Matthew Hamilton Rosenberg's Biogen position peaked at $135K in Q1 2023.
1,036 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on Matthew Hamilton Rosenberg's 13F filing for Q2 2026, filed 17 Jul 2026.