Bank of America
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Bank of America’s Biogen BIIB Stock Holding History

Bank of America’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
2025
Q4 		– Sell
-500
Closed -$70K – 7406
2025
Q3 		$70K Hold
500
– – ﹤0.01% 6739
2025
Q2 		$62.8K Hold
500
– – ﹤0.01% 6721
2025
Q1 		$68.4K Sell
500
-34,500
-99% -$4.93M ﹤0.01% 6647
2024
Q4 		$5.35M Buy
35,000
+12,000
+52% +$2.02M ﹤0.01% 3533
2024
Q3 		$4.46M Hold
23,000
– – ﹤0.01% 3841
2024
Q2 		$5.33M Buy
23,000
+7,200
+46% +$1.56M ﹤0.01% 3557
2024
Q1 		$3.41M Sell
15,800
-477,000
-97% -$112M ﹤0.01% 3993
2023
Q4 		$128M Buy
492,800
+426,700
+646% +$105M 0.01% 830
2023
Q3 		$17M Buy
66,100
+15,200
+30% +$4.07M ﹤0.01% 2207
2023
Q2 		$14.5M Sell
50,900
-214,800
-81% -$63.9M ﹤0.01% 2328
2023
Q1 		$73.9M Buy
265,700
+263,800
+13,884% +$73M 0.01% 1110
2022
Q4 		$526K Sell
1,900
-38,300
-95% -$10.8M ﹤0.01% 5340
2022
Q3 		$10.7M Buy
40,200
+2,700
+7% +$573K ﹤0.01% 2551
2022
Q2 		$7.65M Buy
+37,500
New +$7.67M ﹤0.01% 2959
2022
Q1 		– Sell
-79,500
Closed -$19.1M – 8258
2021
Q4 		$19.1M Sell
79,500
-111,200
-58% -$28.6M ﹤0.01% 2255
2021
Q3 		$54M Buy
190,700
+120,600
+172% +$39.5M 0.01% 1295
2021
Q2 		$24.3M Sell
70,100
-41,200
-37% -$12.5M ﹤0.01% 1965
2021
Q1 		$31.1M Sell
111,300
-162,200
-59% -$43.7M ﹤0.01% 1658
2020
Q4 		$67M Buy
273,500
+271,800
+15,988% +$70.1M 0.01% 992
2020
Q3 		$482K Sell
1,700
-600
-26% -$167K ﹤0.01% 4744
2020
Q2 		$615K Sell
2,300
-28,400
-93% -$8.54M ﹤0.01% 4468
2020
Q1 		$9.71M Sell
30,700
-92,200
-75% -$28M ﹤0.01% 2081
2019
Q4 		$36.5M Buy
122,900
+43,900
+56% +$12.2M 0.01% 1393
2019
Q3 		$18.4M Buy
79,000
+17,100
+28% +$3.98M ﹤0.01% 1902
2019
Q2 		$14.5M Sell
61,900
-15,800
-20% -$3.65M ﹤0.01% 2163
2019
Q1 		$18.4M Buy
77,700
+31,300
+67% +$9.86M ﹤0.01% 1905
2018
Q4 		$14M Hold
46,400
– – ﹤0.01% 1983
2018
Q3 		$16.4M Buy
46,400
+1,600
+4% +$551K ﹤0.01% 2016
2018
Q2 		$13M Buy
44,800
+20,000
+81% +$5.62M ﹤0.01% 2194
2018
Q1 		$6.79M Sell
24,800
-7,600
-23% -$2.36M ﹤0.01% 2777
2017
Q4 		$10.3M Hold
32,400
– – ﹤0.01% 2409
2017
Q3 		$10.1M Sell
32,400
-3,600
-10% -$1.07M ﹤0.01% 2503
2017
Q2 		$9.77M Buy
+36,000
New +$9.52M ﹤0.01% 2394
2017
Q1 		– Sell
-123,200
Closed -$34.9M – 6967
2016
Q4 		$34.9M Sell
123,200
-23,800
-16% -$7.05M 0.01% 1239
2016
Q3 		$46M Buy
147,000
+41,900
+40% +$12.4M 0.01% 1031
2016
Q2 		$25.4M Buy
105,100
+300
+0.3% +$79.1K 0.01% 1411
2016
Q1 		$27.3M Sell
104,800
-11,200
-10% -$2.96M 0.01% 1330
2015
Q4 		$35.5M Buy
116,000
+26,200
+29% +$7.53M 0.01% 1215
2015
Q3 		$26.2M Sell
89,800
-100,600
-53% -$33.2M 0.01% 1409
2015
Q2 		$76.9M Buy
190,400
+135,800
+249% +$54.5M 0.03% 670
2015
Q1 		$23.1M Sell
54,600
-91,600
-63% -$36.1M 0.01% 1258
2014
Q4 		$49.6M Buy
146,200
+1,900
+1% +$615K 0.02% 854
2014
Q3 		$47.7M Buy
144,300
+9,100
+7% +$3M 0.02% 872
2014
Q2 		$42.6M Buy
135,200
+60,200
+80% +$18.1M 0.01% 920
2014
Q1 		$22.9M Sell
75,000
-86,100
-53% -$27.3M 0.01% 1196
2013
Q4 		$45M Buy
161,100
+104,000
+182% +$26.9M 0.02% 805
2013
Q3 		$13.7M Buy
57,100
+41,000
+255% +$9.18M 0.01% 1522
2013
Q2 		$3.46M Buy
+16,100
New +$3.44M ﹤0.01% 2634

Other funds holding BIIB

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

Bank of America's BIIB Position: Q1 2026 in Review

Bank of America increased its Biogen (BIIB) stake by 2.4% in Q1 2026, buying an estimated $5.07M and bringing the position to 1,156,369 shares worth $212M. The position accounts for 0.02% of the portfolio, ranked #701.

Bank of America first reported a position in BIIB in Q2 2013 and has held it in 52 quarters since. The position peaked at $759M in Q3 2017. 1,009 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.

  • Bank of America held 1,156,369 shares of Biogen worth $212M as of Q1 2026.
  • Bank of America bought 27,524 Biogen shares in Q1 2026, an estimated $5.07M.
  • Biogen made up 0.02% of Bank of America's portfolio in Q1 2026, its #701 holding.
  • Bank of America first reported a position in Biogen in Q2 2013 and has held it in 52 quarters since.
  • Bank of America's Biogen position peaked at $759M in Q3 2017.
  • 1,009 funds tracked by Wall St. Rank held Biogen as of Q1 2026.

Based on Bank of America's 13F filing for Q1 2026, filed 18 May 2026.