Vanguard Personalized Indexing Management
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Vanguard Personalized Indexing Management’s Biogen BIIB Stock Holding History

Vanguard Personalized Indexing Management’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 		$8M Buy
37,015
+602
+2% +$115K 0.07% 244
2026
Q1 		$6.68M Sell
36,413
-2,180
-6% -$402K 0.07% 256
2025
Q4 		$6.79M Sell
38,593
-81
-0.2% -$13.2K 0.07% 243
2025
Q3 		$5.42M Buy
38,674
+3,746
+11% +$506K 0.06% 291
2025
Q2 		$4.39M Buy
34,928
+13,226
+61% +$1.65M 0.05% 330
2025
Q1 		$2.97M Buy
21,702
+44
+0.2% +$6.29K 0.04% 365
2024
Q4 		$3.31M Buy
21,658
+10,359
+92% +$1.75M 0.05% 325
2024
Q3 		$2.19M Sell
11,299
-1,962
-15% -$410K 0.04% 445
2024
Q2 		$3.07M Buy
13,261
+2,855
+27% +$620K 0.06% 291
2024
Q1 		$2.24M Buy
10,406
+200
+2% +$46.8K 0.05% 362
2023
Q4 		$2.64M Sell
10,206
-525
-5% -$129K 0.07% 271
2023
Q3 		$2.76M Sell
10,731
-619
-5% -$166K 0.08% 236
2023
Q2 		$3.23M Buy
11,350
+1,236
+12% +$368K 0.1% 196
2023
Q1 		$2.81M Buy
10,114
+909
+10% +$252K 0.1% 206
2022
Q4 		$2.55M Buy
9,205
+1,938
+27% +$547K 0.11% 193
2022
Q3 		$1.94M Buy
7,267
+1,389
+24% +$295K 0.09% 237
2022
Q2 		$1.2M Buy
5,878
+2,704
+85% +$553K 0.06% 377
2022
Q1 		$668K Buy
3,174
+1,022
+47% +$222K 0.03% 672
2021
Q4 		$516K Sell
2,152
-821
-28% -$211K 0.03% 693
2021
Q3 		$841K Buy
2,973
+339
+13% +$111K 0.08% 280
2021
Q2 		$912K Buy
2,634
+1,212
+85% +$367K 0.1% 231
2021
Q1 		$398K Buy
1,422
+239
+20% +$64.5K 0.06% 397
2020
Q4 		$290K Buy
1,183
+141
+14% +$36.4K 0.06% 385
2020
Q3 		$296K Buy
1,042
+188
+22% +$52.4K 0.08% 292
2020
Q2 		$228K Sell
854
-345
-29% -$104K 0.1% 263
2020
Q1 		$379K Buy
+1,199
New +$364K 0.22% 129

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

Vanguard Personalized Indexing Management's BIIB Position: Q2 2026 in Review

Vanguard Personalized Indexing Management increased its Biogen (BIIB) stake by 1.7% in Q2 2026, buying an estimated $115K and bringing the position to 37,015 shares worth $8M. The position accounts for 0.07% of the portfolio, ranked #244.

Vanguard Personalized Indexing Management first reported a position in BIIB in Q1 2020 and has held it in 26 quarters since. 1,041 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

  • Vanguard Personalized Indexing Management held 37,015 shares of Biogen worth $8M as of Q2 2026.
  • Vanguard Personalized Indexing Management bought 602 Biogen shares in Q2 2026, an estimated $115K.
  • Biogen made up 0.07% of Vanguard Personalized Indexing Management's portfolio in Q2 2026, its #244 holding.
  • Vanguard Personalized Indexing Management first reported a position in Biogen in Q1 2020 and has held it in 26 quarters since.
  • 1,041 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on Vanguard Personalized Indexing Management's 13F filing for Q2 2026, filed 11 Aug 2026.