Chevy Chase Trust’s Biogen BIIB Stock Holding History

Chevy Chase Trust’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	$15.4M	Sell	71,460 -1,185	-2%	-$227K	0.04%	323
2026 Q1	$13.3M	Sell	72,645 -2,079	-3%	-$383K	0.04%	350
2025 Q4	$13.2M	Sell	74,724 -447	-0.6%	-$73K	0.04%	353
2025 Q3	$10.5M	Sell	75,171 -2,570	-3%	-$347K	0.03%	398
2025 Q2	$9.76M	Buy	77,741 +626	+0.8%	+$78K	0.03%	411
2025 Q1	$10.6M	Buy	77,115 +295	+0.4%	+$42.2K	0.03%	390
2024 Q4	$11.7M	Sell	76,820 -1,805	-2%	-$304K	0.04%	370
2024 Q3	$15.2M	Sell	78,625 -1,395	-2%	-$292K	0.05%	324
2024 Q2	$18.6M	Sell	80,020 -945	-1%	-$205K	0.06%	270
2024 Q1	$17.5M	Sell	80,965 -704	-0.9%	-$165K	0.06%	287
2023 Q4	$21.1M	Sell	81,669 -464	-0.6%	-$114K	0.08%	236
2023 Q3	$21.1M	Sell	82,133 -1,861	-2%	-$498K	0.08%	216
2023 Q2	$23.9M	Sell	83,994 -414	-0.5%	-$123K	0.09%	202
2023 Q1	$23.5M	Buy	84,408 +858	+1%	+$237K	0.09%	204
2022 Q4	$23.1M	Sell	83,550 -5,785	-6%	-$1.63M	0.1%	202
2022 Q3	$23.9M	Buy	89,335 +166	+0.2%	+$35.3K	0.1%	191
2022 Q2	$18.2M	Buy	89,169 +124	+0.1%	+$25.3K	0.08%	245
2022 Q1	$18.8M	Buy	89,045 +138	+0.2%	+$30K	0.06%	272
2021 Q4	$21.3M	Sell	88,907 -3,324	-4%	-$855K	0.07%	257
2021 Q3	$26.1M	Sell	92,231 -4,432	-5%	-$1.45M	0.09%	202
2021 Q2	$33.5M	Sell	96,663 -6,304	-6%	-$1.91M	0.11%	172
2021 Q1	$28.8M	Sell	102,967 -8,806	-8%	-$2.37M	0.1%	182
2020 Q4	$27.4M	Sell	111,773 -6,568	-6%	-$1.69M	0.1%	188
2020 Q3	$33.6M	Sell	118,341 -14,075	-11%	-$3.93M	0.13%	157
2020 Q2	$35.4M	Sell	132,416 -22,147	-14%	-$6.66M	0.14%	155
2020 Q1	$48.9M	Buy	154,563 +2,444	+2%	+$742K	0.23%	105
2019 Q4	$45.1M	Sell	152,119 -3,316	-2%	-$920K	0.17%	135
2019 Q3	$36.2M	Sell	155,435 -14,136	-8%	-$3.29M	0.15%	156
2019 Q2	$39.7M	Sell	169,571 -3,008	-2%	-$695K	0.16%	141
2019 Q1	$39.6M	Sell	172,579 -2,368	-1%	-$746K	0.16%	138
2018 Q4	$52.6M	Sell	174,947 -4,150	-2%	-$1.32M	0.26%	95
2018 Q3	$63.3M	Sell	179,097 -12,342	-6%	-$4.25M	0.26%	89
2018 Q2	$55.6M	Sell	191,439 -1,375	-0.7%	-$387K	0.24%	97
2018 Q1	$52.8M	Sell	192,814 -3,260	-2%	-$1.01M	0.23%	106
2017 Q4	$62.5M	Sell	196,074 -3,758	-2%	-$1.21M	0.27%	94
2017 Q3	$62.6M	Buy	199,832 +474	+0.2%	+$140K	0.28%	87
2017 Q2	$54.1M	Sell	199,358 -2,138	-1%	-$565K	0.26%	99
2017 Q1	$55.1M	Buy	201,496 +4,354	+2%	+$1.23M	0.27%	92
2016 Q4	$55.9M	Buy	197,142 +833	+0.4%	+$247K	0.3%	79
2016 Q3	$61.5M	Sell	196,309 -4,233	-2%	-$1.25M	0.34%	69
2016 Q2	$48.5M	Buy	200,542 +2,936	+1%	+$774K	0.27%	89
2016 Q1	$51.4M	Buy	197,606 +12,542	+7%	+$3.31M	0.29%	81
2015 Q4	$56.7M	Sell	185,064 -8,725	-5%	-$2.51M	0.33%	71
2015 Q3	$56.5M	Buy	193,789 +6,803	+4%	+$2.25M	0.35%	68
2015 Q2	$75.5M	Buy	186,986 +2,904	+2%	+$1.17M	0.45%	52
2015 Q1	$77.7M	Buy	184,082 +5,052	+3%	+$1.99M	0.47%	50
2014 Q4	$60.8M	Sell	179,030 -1,494	-0.8%	-$483K	0.38%	59
2014 Q3	$59.7M	Buy	180,524 +10,250	+6%	+$3.38M	0.39%	56
2014 Q2	$53.7M	Sell	170,274 -2,890	-2%	-$870K	0.37%	58
2014 Q1	$53M	Buy	173,164 +137	+0.1%	+$43.5K	0.38%	59
2013 Q4	$48.4M	Buy	173,027 +1,219	+0.7%	+$315K	0.35%	67
2013 Q3	$41.4M	Buy	171,808 +4,228	+3%	+$946K	0.34%	69
2013 Q2	$36.1M	Buy	+167,580	New	+$35.8M	0.32%	72

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

Chevy Chase Trust's BIIB Position: Q2 2026 in Review

Chevy Chase Trust reduced its Biogen (BIIB) stake by 1.6% in Q2 2026, selling an estimated $227K and leaving 71,460 shares worth $15.4M. The position accounts for 0.04% of the portfolio, ranked #323.

Chevy Chase Trust first reported a position in BIIB in Q2 2013 and has held it in 53 quarters since. The position peaked at $77.7M in Q1 2015. 1,036 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

Chevy Chase Trust held 71,460 shares of Biogen worth $15.4M as of Q2 2026.
Chevy Chase Trust sold 1,185 Biogen shares in Q2 2026, an estimated $227K.
Biogen made up 0.04% of Chevy Chase Trust's portfolio in Q2 2026, its #323 holding.
Chevy Chase Trust first reported a position in Biogen in Q2 2013 and has held it in 53 quarters since.
Chevy Chase Trust's Biogen position peaked at $77.7M in Q1 2015.
1,036 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on Chevy Chase Trust's 13F filing for Q2 2026, filed 14 Aug 2026.