J.L. Bainbridge & Co’s Biogen BIIB Stock Holding History

J.L. Bainbridge & Co’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	$216K	Buy	+1,000	New	+$191K	0.02%	109
2025 Q4	–	Sell	-2,969	Closed	-$416K	–	108
2025 Q3	$416K	Sell	2,969 -119,376	-98%	-$16.1M	0.03%	62
2025 Q2	$15.4M	Sell	122,345 -2,177	-2%	-$271K	1.39%	23
2025 Q1	$17M	Buy	124,522 +26,539	+27%	+$3.79M	1.71%	23
2024 Q4	$15M	Sell	97,983 -23,159	-19%	-$3.91M	1.39%	21
2024 Q3	$23.5M	Buy	121,142 +60,538	+100%	+$12.7M	2.25%	17
2024 Q2	$14M	Buy	60,604 +10,586	+21%	+$2.3M	1.39%	23
2024 Q1	$10.8M	Buy	+50,018	New	+$11.7M	1.15%	24

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

J.L. Bainbridge & Co's BIIB Position: Q2 2026 in Review

J.L. Bainbridge & Co opened a new position in Biogen (BIIB) in Q2 2026: 1,000 shares worth $216K. The stake represents 0.02% of the portfolio and ranks #109 among its holdings. This is a return to the name: J.L. Bainbridge & Co previously reported a position in BIIB as recently as Q3 2025.

J.L. Bainbridge & Co first reported a position in BIIB in Q1 2024 and has held it in 8 quarters since. The position peaked at $23.5M in Q3 2024. 1,038 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

J.L. Bainbridge & Co held 1,000 shares of Biogen worth $216K as of Q2 2026.
Biogen was a new J.L. Bainbridge & Co position in Q2 2026.
Biogen made up 0.02% of J.L. Bainbridge & Co's portfolio in Q2 2026, its #109 holding.
J.L. Bainbridge & Co first reported a position in Biogen in Q1 2024 and has held it in 8 quarters since.
J.L. Bainbridge & Co's Biogen position peaked at $23.5M in Q3 2024.
1,038 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on J.L. Bainbridge & Co's 13F filing for Q2 2026, filed 22 Jul 2026.