Adams Diversified Equity Fund’s Biogen BIIB Stock Holding History

Adams Diversified Equity Fund’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	$21.7M	Hold	100,300	–	–	0.66%	43
2026 Q1	$18.4M	Buy	100,300 +56,000	+126%	+$10.3M	0.65%	51
2025 Q4	$7.8M	Buy	+44,300	New	+$7.24M	0.26%	84
2019 Q1	–	Sell	-48,900	Closed	-$14.7M	–	224
2018 Q4	$14.7M	Hold	48,900	–	–	0.91%	44
2018 Q3	$17.3M	Hold	48,900	–	–	0.86%	47
2018 Q2	$14.2M	Sell	48,900 -18,100	-27%	-$5.09M	0.76%	52
2018 Q1	$18.3M	Buy	+67,000	New	+$20.8M	1%	39
2017 Q2	–	Sell	-47,000	Closed	-$12.9M	–	210
2017 Q1	$12.9M	Hold	47,000	–	–	0.74%	57
2016 Q4	$13.3M	Hold	47,000	–	–	0.83%	51
2016 Q3	$11.4M	Hold	47,000	–	–	0.76%	57
2016 Q2	$11.4M	Hold	47,000	–	–	0.76%	57
2016 Q1	$12.2M	Hold	47,000	–	–	0.85%	51
2015 Q4	$14.4M	Hold	47,000	–	–	0.99%	45
2015 Q3	$13.7M	Hold	47,000	–	–	0.99%	43
2015 Q2	$19M	Hold	47,000	–	–	1.25%	33
2015 Q1	$19.8M	Hold	47,000	–	–	1.31%	28
2014 Q4	$16M	Hold	47,000	–	–	1.05%	38
2014 Q3	$15.5M	Hold	47,000	–	–	1.03%	40
2014 Q2	$14.8M	Hold	47,000	–	–	0.99%	44
2014 Q1	$14.4M	Hold	47,000	–	–	1.01%	40
2013 Q4	$13.1M	Buy	47,000 +17,000	+57%	+$4.4M	0.93%	49
2013 Q3	$7.22M	Hold	30,000	–	–	0.55%	75
2013 Q2	$6.46M	Buy	+30,000	New	+$6.41M	0.51%	75

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

Adams Diversified Equity Fund's BIIB Position: Q2 2026 in Review

Adams Diversified Equity Fund held its Biogen (BIIB) position steady in Q2 2026 at 100,300 shares worth $21.7M. The position accounts for 0.66% of the portfolio, ranked #43.

Adams Diversified Equity Fund first reported a position in BIIB in Q2 2013 and has held it in 23 quarters since. 1,036 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

Adams Diversified Equity Fund held 100,300 shares of Biogen worth $21.7M as of Q2 2026.
Adams Diversified Equity Fund left its Biogen share count unchanged in Q2 2026.
Biogen made up 0.66% of Adams Diversified Equity Fund's portfolio in Q2 2026, its #43 holding.
Adams Diversified Equity Fund first reported a position in Biogen in Q2 2013 and has held it in 23 quarters since.
1,036 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on Adams Diversified Equity Fund's 13F filing for Q2 2026, filed 22 Jul 2026.