AA
BIIB icon

Addison Advisors’s Biogen BIIB Stock Holding History

Addison 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
Q2 		$649 Sell
3
-151
-98% -$28.9K ﹤0.01% 643
2026
Q1 		$28.2K Buy
154
+3
+2% +$553 0.01% 506
2025
Q4 		$26.6K Sell
151
-16
-10% -$2.61K 0.01% 504
2025
Q3 		$23.4K Buy
167
+41
+33% +$5.54K 0.01% 526
2025
Q2 		$15.8K Buy
126
+114
+950% +$14.2K ﹤0.01% 570
2025
Q1 		$1.64K Sell
12
-74
-86% -$10.6K ﹤0.01% 756
2024
Q4 		$13.2K Buy
+86
New +$14.5K ﹤0.01% 553

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

Addison Advisors's BIIB Position: Q2 2026 in Review

Addison Advisors reduced its Biogen (BIIB) stake by 98% in Q2 2026, selling an estimated $28.9K and leaving 3 shares worth $649. The position accounts for ﹤0.01% of the portfolio, ranked #643.

Addison Advisors first reported a position in BIIB in Q4 2024 and has held it in 7 quarters since. The position peaked at $28.2K in Q1 2026. 1,043 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

  • Addison Advisors held 3 shares of Biogen worth $649 as of Q2 2026.
  • Addison Advisors sold 151 Biogen shares in Q2 2026, an estimated $28.9K.
  • Biogen made up ﹤0.01% of Addison Advisors's portfolio in Q2 2026, its #643 holding.
  • Addison Advisors first reported a position in Biogen in Q4 2024 and has held it in 7 quarters since.
  • Addison Advisors's Biogen position peaked at $28.2K in Q1 2026.
  • 1,043 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on Addison Advisors's 13F filing for Q2 2026, filed 10 Aug 2026.