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Rothschild Investment LLC’s Biogen BIIB Stock Holding History

Rothschild Investment LLC’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 		$592K Buy
2,739
+1,830
+201% +$350K 0.02% 548
2026
Q1 		$167K Buy
909
+396
+77% +$73K 0.01% 725
2025
Q4 		$90.2K Buy
513
+56
+12% +$9.15K 0.01% 836
2025
Q3 		$64K Buy
457
+233
+104% +$31.5K ﹤0.01% 928
2025
Q2 		$28.1K Buy
224
+88
+65% +$11K ﹤0.01% 936
2025
Q1 		$18.6K Sell
136
-63
-32% -$9.01K ﹤0.01% 1021
2024
Q4 		$30.4K Buy
199
+136
+216% +$22.9K ﹤0.01% 901
2024
Q3 		$12.2K Sell
63
-194
-75% -$40.6K ﹤0.01% 1115
2024
Q2 		$59.6K Buy
257
+164
+176% +$35.6K ﹤0.01% 721
2024
Q1 		$20.1K Buy
93
+22
+31% +$5.15K ﹤0.01% 923
2023
Q4 		$18.4K Buy
+71
New +$17.4K ﹤0.01% 884

Other funds holding BIIB

Boston Partners
Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return
Pictet Asset Management
Pictet Asset Management Carouge, Switzerland $105B AUM 38.07% 1-Year Est. Return
Robeco Institutional Asset Management
Robeco Institutional Asset Management Rotterdam, Netherlands $81.4B AUM 40.71% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $609B AUM 40.19% 1-Year Est. Return
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $315B AUM 27.84% 1-Year Est. Return
Citigroup
Citigroup New York $303B AUM 53.02% 1-Year Est. Return
AIM
Artemis Investment Management Edinburgh, United Kingdom $11.2B AUM 80.72% 1-Year Est. Return
LSV Asset Management
LSV Asset Management Chicago, Illinois $55.1B AUM 45.38% 1-Year Est. Return
Mitsubishi UFJ Asset Management
Mitsubishi UFJ Asset Management Tokyo, Japan $180B AUM 37.51% 1-Year Est. Return
Sumitomo Mitsui Trust Group
Sumitomo Mitsui Trust Group Minato-Ku, Tokyo, Japan $175B AUM 40.63% 1-Year Est. Return

Rothschild Investment LLC's BIIB Position: Q2 2026 in Review

Rothschild Investment LLC increased its Biogen (BIIB) stake by 201% in Q2 2026, buying an estimated $350K and bringing the position to 2,739 shares worth $592K. The position accounts for 0.02% of the portfolio, ranked #548.

Rothschild Investment LLC first reported a position in BIIB in Q4 2023 and has held it in 11 quarters since. 530 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

  • Rothschild Investment LLC held 2,739 shares of Biogen worth $592K as of Q2 2026.
  • Rothschild Investment LLC bought 1,830 Biogen shares in Q2 2026, an estimated $350K.
  • Biogen made up 0.02% of Rothschild Investment LLC's portfolio in Q2 2026, its #548 holding.
  • Rothschild Investment LLC first reported a position in Biogen in Q4 2023 and has held it in 11 quarters since.
  • 530 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on Rothschild Investment LLC's 13F filing for Q2 2026, filed 6 Aug 2026.