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Rakuten Securities’s Biogen BIIB Stock Holding History

Rakuten Securities’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 		$3.24K Sell
15
-7
-32% -$1.34K ﹤0.01% 603
2026
Q1 		$4.03K Sell
22
-5
-19% -$921 ﹤0.01% 532
2025
Q4 		$4.75K Sell
27
-22
-45% -$3.59K ﹤0.01% 524
2025
Q3 		$6.86K Sell
49
-130
-73% -$17.6K ﹤0.01% 469
2025
Q2 		$22.5K Buy
179
+92
+106% +$11.5K 0.01% 309
2025
Q1 		$11.9K Buy
87
+24
+38% +$3.43K 0.01% 379
2024
Q4 		$9.63K Buy
63
+18
+40% +$3.04K ﹤0.01% 396
2024
Q3 		$8.72K Sell
45
-5
-10% -$1.05K ﹤0.01% 355
2024
Q2 		$11.6K Sell
50
-9
-15% -$1.96K 0.01% 314
2024
Q1 		$12.7K Buy
59
+10
+20% +$2.34K 0.01% 299
2023
Q4 		$12.7K Buy
+49
New +$12K 0.01% 270

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

Rakuten Securities's BIIB Position: Q2 2026 in Review

Rakuten Securities reduced its Biogen (BIIB) stake by 32% in Q2 2026, selling an estimated $1.34K and leaving 15 shares worth $3.24K. The position accounts for ﹤0.01% of the portfolio, ranked #603.

Rakuten Securities first reported a position in BIIB in Q4 2023 and has held it in 11 quarters since. The position peaked at $22.5K in Q2 2025. 1,036 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

  • Rakuten Securities held 15 shares of Biogen worth $3.24K as of Q2 2026.
  • Rakuten Securities sold 7 Biogen shares in Q2 2026, an estimated $1.34K.
  • Biogen made up ﹤0.01% of Rakuten Securities's portfolio in Q2 2026, its #603 holding.
  • Rakuten Securities first reported a position in Biogen in Q4 2023 and has held it in 11 quarters since.
  • Rakuten Securities's Biogen position peaked at $22.5K in Q2 2025.
  • 1,036 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on Rakuten Securities's 13F filing for Q2 2026, filed 12 Aug 2026.