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Covestor’s Biogen BIIB Stock Holding History

Covestor’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 		$54K Sell
293
-289
-50% -$53.3K 0.04% 657
2025
Q4 		$103K Sell
582
-443
-43% -$72.4K 0.05% 560
2025
Q3 		$144K Buy
1,025
+166
+19% +$22.4K 0.08% 357
2025
Q2 		$108K Buy
859
+217
+34% +$27K 0.06% 509
2025
Q1 		$88K Buy
642
+317
+98% +$45.3K 0.06% 561
2024
Q4 		$50K Buy
325
+240
+282% +$40.5K 0.03% 855
2024
Q3 		$17K Sell
85
-79
-48% -$16.5K 0.01% 1261
2024
Q2 		$38K Buy
164
+78
+91% +$17K 0.02% 966
2024
Q1 		$18K Sell
86
-1
-1% -$234 0.01% 1242
2023
Q4 		$23K Sell
87
-6
-6% -$1.47K 0.02% 1141
2023
Q3 		$24K Buy
93
+3
+3% +$802 0.02% 1043
2023
Q2 		$26K Sell
90
-95
-51% -$28.3K 0.02% 1023
2023
Q1 		$52K Buy
185
+81
+78% +$22.4K 0.05% 696
2022
Q4 		$29K Sell
104
-291
-74% -$82.2K 0.02% 923
2022
Q3 		$105K Sell
395
-35
-8% -$7.43K 0.09% 324
2022
Q2 		$88K Buy
430
+60
+16% +$12.3K 0.07% 485
2022
Q1 		$78K Buy
370
+186
+101% +$40.4K 0.05% 648
2021
Q4 		$44K Buy
+184
New +$47.3K 0.06% 609

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

Covestor's BIIB Position: Q1 2026 in Review

Covestor reduced its Biogen (BIIB) stake by 50% in Q1 2026, selling an estimated $53.3K and leaving 293 shares worth $54K. The position accounts for 0.04% of the portfolio, ranked #657.

Covestor first reported a position in BIIB in Q4 2021 and has held it in 18 quarters since. The position peaked at $144K in Q3 2025. 1,004 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.

  • Covestor held 293 shares of Biogen worth $54K as of Q1 2026.
  • Covestor sold 289 Biogen shares in Q1 2026, an estimated $53.3K.
  • Biogen made up 0.04% of Covestor's portfolio in Q1 2026, its #657 holding.
  • Covestor first reported a position in Biogen in Q4 2021 and has held it in 18 quarters since.
  • Covestor's Biogen position peaked at $144K in Q3 2025.
  • 1,004 funds tracked by Wall St. Rank held Biogen as of Q1 2026.

Based on Covestor's 13F filing for Q1 2026, filed 5 May 2026.