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CenterBook Partners’s Biogen BIIB Stock Holding History

CenterBook Partners’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 		$2.25M Buy
+10,418
New +$1.99M 0.11% 206
2024
Q4 		– Sell
-29,987
Closed -$5.81M – 476
2024
Q3 		$5.81M Sell
29,987
-26,841
-47% -$5.62M 0.36% 83
2024
Q2 		$13.2M Buy
56,828
+52,863
+1,333% +$11.5M 0.82% 11
2024
Q1 		$855K Buy
3,965
+657
+20% +$154K 0.06% 321
2023
Q4 		$856K Buy
+3,308
New +$813K 0.1% 273
2022
Q4 		– Sell
-1,726
Closed -$461K – 389
2022
Q3 		$461K Sell
1,726
-199
-10% -$42.3K 0.09% 290
2022
Q2 		$393K Sell
1,925
-1,111
-37% -$227K 0.08% 295
2022
Q1 		$639K Sell
3,036
-81
-3% -$17.6K 0.23% 163
2021
Q4 		$748K Buy
+3,117
New +$801K 0.44% 72

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

CenterBook Partners's BIIB Position: Q2 2026 in Review

CenterBook Partners opened a new position in Biogen (BIIB) in Q2 2026: 10,418 shares worth $2.25M. The stake represents 0.11% of the portfolio and ranks #206 among its holdings. This is a return to the name: CenterBook Partners previously reported a position in BIIB as recently as Q3 2024.

CenterBook Partners first reported a position in BIIB in Q4 2021 and has held it in 9 quarters since. The position peaked at $13.2M in Q2 2024. 1,043 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

  • CenterBook Partners held 10,418 shares of Biogen worth $2.25M as of Q2 2026.
  • Biogen was a new CenterBook Partners position in Q2 2026.
  • Biogen made up 0.11% of CenterBook Partners's portfolio in Q2 2026, its #206 holding.
  • CenterBook Partners first reported a position in Biogen in Q4 2021 and has held it in 9 quarters since.
  • CenterBook Partners's Biogen position peaked at $13.2M in Q2 2024.
  • 1,043 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on CenterBook Partners's 13F filing for Q2 2026, filed 11 Aug 2026.