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TFB Advisors’s Biogen BIIB Stock Holding History

TFB 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
Q1 		$444K Sell
2,423
-25
-1% -$4.61K 0.23% 93
2025
Q4 		$431K Hold
2,448
– – 0.12% 184
2025
Q3 		$356K Sell
2,448
-23
-0.9% -$3.11K 0.1% 214
2025
Q2 		$310K Buy
2,471
+32
+1% +$3.99K 0.08% 254
2025
Q1 		$334K Buy
2,439
+5
+0.2% +$715 0.1% 231
2024
Q4 		$372K Sell
2,434
-13
-0.5% -$2.19K 0.11% 210
2024
Q3 		$474K Sell
2,447
-2
-0.1% -$418 0.14% 173
2024
Q2 		$568K Sell
2,449
-1
-0% -$217 0.18% 119
2024
Q1 		$530K Buy
2,450
+50
+2% +$11.7K 0.19% 116
2023
Q4 		$621K Sell
2,400
-44
-2% -$10.8K 0.32% 71
2023
Q3 		$628K Buy
2,444
+2
+0.1% +$535 0.76% 38
2023
Q2 		$696K Buy
+2,442
New +$727K 0.3% 79

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

TFB Advisors's BIIB Position: Q1 2026 in Review

TFB Advisors reduced its Biogen (BIIB) stake by 1% in Q1 2026, selling an estimated $4.61K and leaving 2,423 shares worth $444K. The position accounts for 0.23% of the portfolio, ranked #93.

TFB Advisors first reported a position in BIIB in Q2 2023 and has held it in 12 quarters since. The position peaked at $696K in Q2 2023. 1,004 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.

  • TFB Advisors held 2,423 shares of Biogen worth $444K as of Q1 2026.
  • TFB Advisors sold 25 Biogen shares in Q1 2026, an estimated $4.61K.
  • Biogen made up 0.23% of TFB Advisors's portfolio in Q1 2026, its #93 holding.
  • TFB Advisors first reported a position in Biogen in Q2 2023 and has held it in 12 quarters since.
  • TFB Advisors's Biogen position peaked at $696K in Q2 2023.
  • 1,004 funds tracked by Wall St. Rank held Biogen as of Q1 2026.

Based on TFB Advisors's 13F filing for Q1 2026, filed 20 Apr 2026.