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Ritholtz Wealth Management’s Biogen BIIB Stock Holding History

Ritholtz Wealth 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 		$6.41M Buy
34,943
+6,568
+23% +$1.21M 0.11% 116
2025
Q4 		$4.99M Buy
28,375
+16,695
+143% +$2.73M 0.09% 147
2025
Q3 		$1.64M Buy
11,680
+5,604
+92% +$758K 0.03% 379
2025
Q2 		$763K Buy
+6,076
New +$757K 0.02% 518
2023
Q1 		– Sell
-725
Closed -$201K – 645
2022
Q4 		$201K Sell
725
-1,158
-61% -$327K 0.01% 537
2022
Q3 		$503K Buy
1,883
+345
+22% +$73.3K 0.03% 397
2022
Q2 		$314K Buy
1,538
+466
+43% +$95.3K 0.02% 410
2022
Q1 		$226K Sell
1,072
-233
-18% -$50.7K 0.02% 480
2021
Q4 		$313K Sell
1,305
-936
-42% -$241K 0.02% 403
2021
Q3 		$634K Buy
2,241
+2
+0.1% +$656 0.04% 218
2021
Q2 		$775K Buy
2,239
+702
+46% +$213K 0.06% 185
2021
Q1 		$430K Buy
1,537
+350
+29% +$94.4K 0.04% 233
2020
Q4 		$291K Sell
1,187
-105
-8% -$27.1K 0.03% 258
2020
Q3 		$367K Buy
1,292
+525
+68% +$146K 0.04% 176
2020
Q2 		$205K Buy
+767
New +$231K 0.03% 236

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

Ritholtz Wealth Management's BIIB Position: Q1 2026 in Review

Ritholtz Wealth Management increased its Biogen (BIIB) stake by 23% in Q1 2026, buying an estimated $1.21M and bringing the position to 34,943 shares worth $6.41M. The position accounts for 0.11% of the portfolio, ranked #116.

Ritholtz Wealth Management first reported a position in BIIB in Q2 2020 and has held it in 15 quarters since. 1,002 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.

  • Ritholtz Wealth Management held 34,943 shares of Biogen worth $6.41M as of Q1 2026.
  • Ritholtz Wealth Management bought 6,568 Biogen shares in Q1 2026, an estimated $1.21M.
  • Biogen made up 0.11% of Ritholtz Wealth Management's portfolio in Q1 2026, its #116 holding.
  • Ritholtz Wealth Management first reported a position in Biogen in Q2 2020 and has held it in 15 quarters since.
  • 1,002 funds tracked by Wall St. Rank held Biogen as of Q1 2026.

Based on Ritholtz Wealth Management's 13F filing for Q1 2026, filed 20 Apr 2026.