Sittner & Nelson’s Biogen BIIB Stock Holding History

Sittner & Nelson’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	$25.1K	Buy	116 +6	+5%	+$1.15K	0.01%	359
2026 Q1	$20.2K	Hold	110	–	–	0.01%	383
2025 Q4	$22.1K	Hold	110	–	–	0.01%	337
2025 Q3	$15.4K	Hold	110	–	–	0.01%	347
2025 Q2	$13.8K	Hold	110	–	–	0.01%	352
2025 Q1	$15.1K	Hold	110	–	–	0.01%	335
2024 Q4	$16.8K	Hold	110	–	–	0.01%	311
2024 Q3	$21.3K	Hold	110	–	–	0.01%	287
2024 Q2	$25.5K	Hold	110	–	–	0.01%	262
2024 Q1	$23.7K	Hold	110	–	–	0.01%	266
2023 Q4	$28.5K	Hold	110	–	–	0.02%	254
2023 Q3	$28.3K	Hold	110	–	–	0.02%	253
2023 Q2	$31.3K	Hold	110	–	–	0.02%	250
2023 Q1	$30.6K	Hold	110	–	–	0.02%	262
2022 Q4	$30.5K	Sell	110 -12	-10%	-$3.39K	0.02%	250
2022 Q3	$33K	Hold	122	–	–	0.02%	237
2022 Q2	$25K	Hold	122	–	–	0.02%	266
2022 Q1	$26K	Buy	122 +12	+11%	+$2.61K	0.02%	252
2021 Q4	$26K	Hold	110	–	–	0.02%	250
2021 Q3	$31K	Hold	110	–	–	0.02%	223
2021 Q2	$38K	Hold	110	–	–	0.03%	196
2021 Q1	$31K	Sell	110 -5	-4%	-$1.35K	0.02%	205
2020 Q4	$28K	Buy	+115	New	+$29.7K	0.03%	199

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

Sittner & Nelson's BIIB Position: Q2 2026 in Review

Sittner & Nelson increased its Biogen (BIIB) stake by 5.5% in Q2 2026, buying an estimated $1.15K and bringing the position to 116 shares worth $25.1K. The position accounts for 0.01% of the portfolio, ranked #359.

Sittner & Nelson first reported a position in BIIB in Q4 2020 and has held it in 23 quarters since. The position peaked at $38K in Q2 2021. 1,043 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

Sittner & Nelson held 116 shares of Biogen worth $25.1K as of Q2 2026.
Sittner & Nelson bought 6 Biogen shares in Q2 2026, an estimated $1.15K.
Biogen made up 0.01% of Sittner & Nelson's portfolio in Q2 2026, its #359 holding.
Sittner & Nelson first reported a position in Biogen in Q4 2020 and has held it in 23 quarters since.
Sittner & Nelson's Biogen position peaked at $38K in Q2 2021.
1,043 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on Sittner & Nelson's 13F filing for Q2 2026, filed 7 Aug 2026.