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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
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

BlackRock
BlackRock New York $5.72T AUM 30.48% 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 $2.9T AUM 29.55% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 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 $1.56T AUM 27.86% 1-Year Est. Return

Smartleaf Asset Management's BIIB Position: Q1 2026 in Review

Smartleaf Asset Management increased its Biogen (BIIB) stake by 15% in Q1 2026, buying an estimated $50.3K and bringing the position to 2,125 shares worth $399K. The position accounts for 0.01% of the portfolio, ranked #586.

Smartleaf Asset Management first reported a position in BIIB in Q4 2023 and has held it in 10 quarters since. 1,002 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.

  • Smartleaf Asset Management held 2,125 shares of Biogen worth $399K as of Q1 2026.
  • Smartleaf Asset Management bought 273 Biogen shares in Q1 2026, an estimated $50.3K.
  • Biogen made up 0.01% of Smartleaf Asset Management's portfolio in Q1 2026, its #586 holding.
  • Smartleaf Asset Management first reported a position in Biogen in Q4 2023 and has held it in 10 quarters since.
  • 1,002 funds tracked by Wall St. Rank held Biogen as of Q1 2026.

Based on Smartleaf Asset Management's 13F filing for Q1 2026, filed 15 May 2026.