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Jefferies Financial Group’s Biogen BIIB Stock Holding History

Jefferies Financial Group’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 		$5.93M Buy
27,463
+5,561
+25% +$1.06M 0.04% 352
2026
Q1 		$4.02M Sell
21,902
-10,611
-33% -$1.96M 0.03% 395
2025
Q4 		$5.72M Buy
32,513
+1,913
+6% +$313K 0.03% 457
2025
Q3 		$4.29M Sell
30,600
-6,517
-18% -$881K 0.02% 411
2025
Q2 		$4.66M Sell
37,117
-12,877
-26% -$1.6M 0.04% 316
2025
Q1 		$6.84M Sell
49,994
-33,853
-40% -$4.84M 0.06% 220
2024
Q4 		$12.8M Buy
83,847
+40,820
+95% +$6.89M 0.08% 185
2024
Q3 		$8.34M Buy
43,027
+39,719
+1,201% +$8.31M 0.06% 209
2024
Q2 		$767K Sell
3,308
-576
-15% -$125K 0.01% 831
2024
Q1 		$838K Sell
3,884
-45
-1% -$10.5K 0.01% 880
2023
Q4 		$1.02M Sell
3,929
-5,561
-59% -$1.37M 0.01% 943
2023
Q3 		$2.44M Buy
9,490
+6,021
+174% +$1.61M 0.02% 562
2023
Q2 		$988K Sell
3,469
-155
-4% -$46.1K 0.01% 919
2023
Q1 		$1.01M Sell
3,624
-17,818
-83% -$4.93M 0.01% 892
2022
Q4 		$5.94M Buy
+21,442
New +$6.06M 0.04% 354
2019
Q2 		– Sell
-4,114
Closed -$972K – 17
2019
Q1 		$972K Sell
4,114
-7,412
-64% -$2.33M 0.1% 36
2018
Q4 		$3.47M Buy
11,526
+643
+6% +$205K 0.41% 19
2018
Q3 		$3.85M Sell
10,883
-1,192
-10% -$410K 0.31% 37
2018
Q2 		$3.5M Buy
12,075
+5,744
+91% +$1.61M 0.27% 45
2018
Q1 		$1.73M Buy
6,331
+4,794
+312% +$1.49M 0.12% 45
2017
Q4 		$490K Buy
+1,537
New +$493K 0.04% 68
2017
Q2 		– Sell
-1,716
Closed -$469K – 56
2017
Q1 		$469K Buy
+1,716
New +$485K 0.04% 55

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

Jefferies Financial Group's BIIB Position: Q2 2026 in Review

Jefferies Financial Group increased its Biogen (BIIB) stake by 25% in Q2 2026, buying an estimated $1.06M and bringing the position to 27,463 shares worth $5.93M. The position accounts for 0.04% of the portfolio, ranked #352.

Jefferies Financial Group first reported a position in BIIB in Q1 2017 and has held it in 22 quarters since. The position peaked at $12.8M in Q4 2024. 1,041 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

  • Jefferies Financial Group held 27,463 shares of Biogen worth $5.93M as of Q2 2026.
  • Jefferies Financial Group bought 5,561 Biogen shares in Q2 2026, an estimated $1.06M.
  • Biogen made up 0.04% of Jefferies Financial Group's portfolio in Q2 2026, its #352 holding.
  • Jefferies Financial Group first reported a position in Biogen in Q1 2017 and has held it in 22 quarters since.
  • Jefferies Financial Group's Biogen position peaked at $12.8M in Q4 2024.
  • 1,041 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on Jefferies Financial Group's 13F filing for Q2 2026, filed 17 Aug 2026.