Steve Schonfeld’s Biogen BIIB Stock Holding History

Steve Schonfeld’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	–	Sell	-48,828	Closed	-$8.95M	–	2626
2026 Q1	$8.95M	Sell	48,828 -58,240	-54%	-$10.7M	0.06%	328
2025 Q4	$18.8M	Sell	107,068 -213,086	-67%	-$34.8M	0.08%	214
2025 Q3	$44.8M	Buy	320,154 +256,165	+400%	+$34.6M	0.25%	50
2025 Q2	$8.04M	Buy	+63,989	New	+$7.97M	0.05%	399
2025 Q1	–	Sell	-79,516	Closed	-$12.2M	–	2210
2024 Q4	$12.2M	Buy	79,516 +72,305	+1,003%	+$12.2M	0.07%	255
2024 Q3	$1.4M	Buy	7,211 +341	+5%	+$71.3K	0.01%	1036
2024 Q2	$1.59M	Buy	6,870 +1,358	+25%	+$295K	0.01%	1004
2024 Q1	$1.19M	Sell	5,512 -2,008	-27%	-$470K	0.01%	1171
2023 Q4	$1.95M	Buy	7,520 +5,685	+310%	+$1.4M	0.01%	809
2023 Q3	$472K	Buy	+1,835	New	+$491K	﹤0.01%	1220
2023 Q2	–	Sell	-15,106	Closed	-$4.2M	–	2143
2023 Q1	$4.2M	Buy	15,106 +3,606	+31%	+$998K	0.04%	484
2022 Q4	$3.18M	Buy	11,500 +4,096	+55%	+$1.16M	0.03%	642
2022 Q3	$1.98M	Sell	7,404 -25,340	-77%	-$5.38M	0.02%	863
2022 Q2	$6.68M	Buy	32,744 +326	+1%	+$66.6K	0.06%	385
2022 Q1	$6.83M	Buy	32,418 +1,331	+4%	+$289K	0.06%	354
2021 Q4	$7.46M	Buy	31,087 +26,532	+582%	+$6.82M	0.07%	355
2021 Q3	$1.29M	Sell	4,555 -36,179	-89%	-$11.9M	0.01%	865
2021 Q2	$14.1M	Buy	40,734 +34,529	+556%	+$10.5M	0.15%	205
2021 Q1	$1.74M	Buy	6,205 +3,305	+114%	+$891K	0.02%	710
2020 Q4	$710K	Sell	2,900 -16,649	-85%	-$4.29M	0.01%	919
2020 Q3	$5.55M	Buy	19,549 +8,767	+81%	+$2.45M	0.11%	263
2020 Q2	$2.88M	Buy	10,782 +8,280	+331%	+$2.49M	0.07%	324
2020 Q1	$792K	Sell	2,502 -5,808	-70%	-$1.76M	0.05%	438
2019 Q4	$2.47M	Sell	8,310 -39,734	-83%	-$11M	0.06%	306
2019 Q3	$11.2M	Buy	48,044 +32,294	+205%	+$7.52M	0.33%	91
2019 Q2	$3.68M	Buy	15,750 +12,216	+346%	+$2.82M	0.13%	190
2019 Q1	$835K	Buy	+3,534	New	+$1.11M	0.03%	550
2018 Q4	–	Sell	-702	Closed	-$248K	–	1058
2018 Q3	$248K	Buy	+702	New	+$242K	0.01%	725
2018 Q1	–	Sell	-20,000	Closed	-$6.37M	–	762
2017 Q4	$6.37M	Sell	20,000 -17,200	-46%	-$5.52M	0.52%	47
2017 Q3	$11.6M	Buy	37,200 +32,979	+781%	+$9.77M	1.06%	9
2017 Q2	$1.15M	Buy	4,221 +1,943	+85%	+$514K	0.12%	251
2017 Q1	$623K	Sell	2,278 -4,601	-67%	-$1.3M	0.06%	331
2016 Q4	$1.95M	Sell	6,879 -10,336	-60%	-$3.06M	0.25%	120
2016 Q3	$5.39M	Buy	17,215 +7,300	+74%	+$2.16M	0.92%	24
2016 Q2	$2.4M	Buy	9,915 +8,415	+561%	+$2.22M	0.54%	41
2016 Q1	$390K	Buy	+1,500	New	+$396K	0.16%	169

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

Steve Schonfeld's BIIB Position: Q2 2026 in Review

Steve Schonfeld sold out of Biogen (BIIB) in Q2 2026, closing a stake of 48,828 shares — an estimated $8.95M sold.

Steve Schonfeld first reported a position in BIIB in Q1 2016 and held it in 36 quarters. The position peaked at $44.8M in Q3 2025. 1,036 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

Steve Schonfeld reported no remaining Biogen position as of Q2 2026 after selling out during the quarter.
Steve Schonfeld sold 48,828 Biogen shares in Q2 2026, an estimated $8.95M.
Steve Schonfeld first reported a position in Biogen in Q1 2016 and held it in 36 quarters.
Steve Schonfeld's Biogen position peaked at $44.8M in Q3 2025.
1,036 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on Schonfeld Strategic Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.