PA
BIIB icon

Probity Advisors’s Biogen BIIB Stock Holding History

Probity Advisors’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 		$247K Buy
1,142
+11
+1% +$2.1K 0.04% 213
2026
Q1 		$207K Buy
+1,131
New +$208K 0.03% 227
2024
Q3 		– Sell
-938
Closed -$217K – 228
2024
Q2 		$217K Buy
+938
New +$204K 0.05% 197
2023
Q3 		– Sell
-708
Closed -$202K – 181
2023
Q2 		$202K Buy
+708
New +$211K 0.04% 186
2022
Q4 		$205K Sell
741
-22
-3% -$6.21K 0.05% 175
2022
Q3 		$204K Buy
+763
New +$162K 0.05% 167
2022
Q1 		– Sell
-958
Closed -$230K – 187
2021
Q4 		$230K Sell
958
-429
-31% -$110K 0.05% 181
2021
Q3 		$393K Buy
1,387
+10
+0.7% +$3.28K 0.08% 154
2021
Q2 		$477K Buy
1,377
+50
+4% +$15.1K 0.1% 134
2021
Q1 		$371K Buy
+1,327
New +$358K 0.08% 147
2020
Q3 		$348K Sell
1,226
-20
-2% -$5.58K 0.1% 139
2020
Q2 		$333K Sell
1,246
-26
-2% -$7.82K 0.1% 138
2020
Q1 		$402K Sell
1,272
-44
-3% -$13.4K 0.15% 117
2019
Q4 		$390K Sell
1,316
-92
-7% -$25.5K 0.12% 134
2019
Q3 		$328K Buy
1,408
+163
+13% +$38K 0.11% 139
2019
Q2 		$291K Buy
1,245
+138
+12% +$31.9K 0.1% 151
2019
Q1 		$262K Buy
1,107
+39
+4% +$12.3K 0.09% 150
2018
Q4 		$321K Sell
1,068
-26
-2% -$8.3K 0.12% 133
2018
Q3 		$387K Buy
1,094
+20
+2% +$6.89K 0.13% 122
2018
Q2 		$312K Buy
1,074
+63
+6% +$17.7K 0.11% 130
2018
Q1 		$277K Buy
1,011
+133
+15% +$41.3K 0.1% 137
2017
Q4 		$280K Buy
878
+73
+9% +$23.4K 0.1% 134
2017
Q3 		$252K Buy
805
+37
+5% +$11K 0.09% 127
2017
Q2 		$208K Buy
+768
New +$203K 0.08% 135

Other funds holding BIIB

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $169B AUM 114.72% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T 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 $580B AUM 38.23% 1-Year Est. Return
Norges Bank
Norges Bank Oslo, Norway $1T AUM
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Probity Advisors's BIIB Position: Q2 2026 in Review

Probity Advisors increased its Biogen (BIIB) stake by 0.97% in Q2 2026, buying an estimated $2.1K and bringing the position to 1,142 shares worth $247K. The position accounts for 0.04% of the portfolio, ranked #213.

Probity Advisors first reported a position in BIIB in Q2 2017 and has held it in 24 quarters since. The position peaked at $477K in Q2 2021. 1,043 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

  • Probity Advisors held 1,142 shares of Biogen worth $247K as of Q2 2026.
  • Probity Advisors bought 11 Biogen shares in Q2 2026, an estimated $2.1K.
  • Biogen made up 0.04% of Probity Advisors's portfolio in Q2 2026, its #213 holding.
  • Probity Advisors first reported a position in Biogen in Q2 2017 and has held it in 24 quarters since.
  • Probity Advisors's Biogen position peaked at $477K in Q2 2021.
  • 1,043 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on Probity Advisors's 13F filing for Q2 2026, filed 31 Jul 2026.