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Maryland State Retirement & Pension System’s Biogen BIIB Stock Holding History

Maryland State Retirement & Pension System’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 		$1.69M Buy
7,843
+748
+11% +$143K 0.03% 384
2026
Q1 		$1.3M Sell
7,095
-286
-4% -$52.7K 0.03% 412
2025
Q4 		$1.3M Hold
7,381
– – 0.03% 412
2025
Q3 		$1.03M Buy
7,381
+572
+8% +$77.3K 0.02% 480
2025
Q2 		$855K Hold
6,809
– – 0.02% 651
2025
Q1 		$932K Sell
6,809
-1,255
-16% -$179K 0.02% 575
2024
Q4 		$1.23M Sell
8,064
-240
-3% -$40.5K 0.03% 528
2024
Q3 		$1.61M Sell
8,304
-2,907
-26% -$608K 0.03% 422
2024
Q2 		$2.6M Hold
11,211
– – 0.05% 329
2024
Q1 		$2.18M Hold
11,211
– – 0.04% 363
2023
Q4 		$2.9M Buy
11,211
+210
+2% +$51.6K 0.06% 278
2023
Q3 		$2.83M Hold
11,001
– – 0.06% 261
2023
Q2 		$3.13M Sell
11,001
-317
-3% -$94.4K 0.07% 247
2023
Q1 		$3.15M Hold
11,318
– – 0.07% 233
2022
Q4 		$3.13M Hold
11,318
– – 0.09% 202
2022
Q3 		$3.02M Hold
11,318
– – 0.25% 71
2022
Q2 		$2.31M Hold
11,318
– – 0.07% 231
2022
Q1 		$2.38M Hold
11,318
– – 0.06% 262
2021
Q4 		$2.71M Hold
11,318
– – 0.07% 247
2021
Q3 		$3.24M Hold
11,318
– – 0.09% 184
2021
Q2 		$3.9M Sell
11,318
-434
-4% -$131K 0.13% 149
2021
Q1 		$3.29M Buy
11,752
+9,266
+373% +$2.5M 0.11% 160
2020
Q4 		$718K Buy
+2,486
New +$641K 0.14% 151

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

Maryland State Retirement & Pension System's BIIB Position: Q2 2026 in Review

Maryland State Retirement & Pension System increased its Biogen (BIIB) stake by 11% in Q2 2026, buying an estimated $143K and bringing the position to 7,843 shares worth $1.69M. The position accounts for 0.03% of the portfolio, ranked #384.

Maryland State Retirement & Pension System first reported a position in BIIB in Q4 2020 and has held it in 23 quarters since. The position peaked at $3.9M in Q2 2021. 1,036 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

  • Maryland State Retirement & Pension System held 7,843 shares of Biogen worth $1.69M as of Q2 2026.
  • Maryland State Retirement & Pension System bought 748 Biogen shares in Q2 2026, an estimated $143K.
  • Biogen made up 0.03% of Maryland State Retirement & Pension System's portfolio in Q2 2026, its #384 holding.
  • Maryland State Retirement & Pension System first reported a position in Biogen in Q4 2020 and has held it in 23 quarters since.
  • Maryland State Retirement & Pension System's Biogen position peaked at $3.9M in Q2 2021.
  • 1,036 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on Maryland State Retirement & Pension System's 13F filing for Q2 2026, filed 30 Jul 2026.