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Smartleaf Asset Management’s Biogen BIIB Stock Holding History

Smartleaf Asset 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 		$460K Hold
2,125
– – 0.02% 572
2026
Q1 		$399K Buy
2,125
+273
+15% +$50.3K 0.01% 586
2025
Q4 		$327K Buy
1,852
+1,224
+195% +$200K 0.01% 627
2025
Q3 		$87K Buy
628
+426
+211% +$57.6K 0.01% 1142
2025
Q2 		$25.5K Sell
202
-125
-38% -$15.6K ﹤0.01% 1453
2025
Q1 		$45.3K Sell
327
-144
-31% -$20.6K ﹤0.01% 1199
2024
Q4 		$70.8K Buy
471
+52
+12% +$8.77K 0.01% 1011
2024
Q3 		$81.7K Buy
419
+272
+185% +$56.9K 0.01% 771
2024
Q2 		$33.6K Buy
147
+60
+69% +$13K 0.01% 844
2024
Q1 		$18.8K Buy
87
+67
+335% +$15.7K ﹤0.01% 867
2023
Q4 		$5.21K Buy
+20
New +$4.91K ﹤0.01% 862

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

Smartleaf Asset Management's BIIB Position: Q2 2026 in Review

Smartleaf Asset Management held its Biogen (BIIB) position steady in Q2 2026 at 2,125 shares worth $460K. The position accounts for 0.02% of the portfolio, ranked #572.

Smartleaf Asset Management first reported a position in BIIB in Q4 2023 and has held it in 11 quarters since. 1,045 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

  • Smartleaf Asset Management held 2,125 shares of Biogen worth $460K as of Q2 2026.
  • Smartleaf Asset Management left its Biogen share count unchanged in Q2 2026.
  • Biogen made up 0.02% of Smartleaf Asset Management's portfolio in Q2 2026, its #572 holding.
  • Smartleaf Asset Management first reported a position in Biogen in Q4 2023 and has held it in 11 quarters since.
  • 1,045 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on Smartleaf Asset Management's 13F filing for Q2 2026, filed 12 Aug 2026.