Ohio Public Employees Retirement System (OPERS)
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Ohio Public Employees Retirement System (OPERS)’s Biogen BIIB Stock Holding History

Ohio Public Employees Retirement System (OPERS)’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
Q1 		$8.44M Sell
46,062
-1,308
-3% -$241K 0.03% 500
2025
Q4 		$8.34M Sell
47,370
-1,659
-3% -$271K 0.03% 507
2025
Q3 		$6.87M Buy
49,029
+3,674
+8% +$497K 0.02% 569
2025
Q2 		$5.7M Buy
45,355
+492
+1% +$61.3K 0.02% 627
2025
Q1 		$6.14M Sell
44,863
-5,188
-10% -$742K 0.02% 591
2024
Q4 		$7.65M Sell
50,051
-2,866
-5% -$483K 0.03% 528
2024
Q3 		$10.3M Sell
52,917
-6,452
-11% -$1.35M 0.04% 384
2024
Q2 		$13.8M Sell
59,369
-5,161
-8% -$1.12M 0.05% 298
2024
Q1 		$13.9M Sell
64,530
-7,263
-10% -$1.7M 0.05% 304
2023
Q4 		$18.6M Sell
71,793
-1,028
-1% -$252K 0.07% 246
2023
Q3 		$18.7M Sell
72,821
-9,094
-11% -$2.43M 0.08% 221
2023
Q2 		$23.3M Sell
81,915
-6,346
-7% -$1.89M 0.09% 193
2023
Q1 		$24.5M Buy
88,261
+8,620
+11% +$2.39M 0.1% 191
2022
Q4 		$22.1M Buy
79,641
+4,729
+6% +$1.34M 0.1% 204
2022
Q3 		$20M Buy
74,912
+566
+0.8% +$120K 0.09% 214
2022
Q2 		$15.2M Sell
74,346
-12,985
-15% -$2.65M 0.06% 280
2022
Q1 		$18.4M Sell
87,331
-3,371
-4% -$733K 0.06% 277
2021
Q4 		$21.8M Sell
90,702
-4,085
-4% -$1.05M 0.07% 249
2021
Q3 		$26.8M Sell
94,787
-1,433
-1% -$470K 0.1% 199
2021
Q2 		$33.3M Sell
96,220
-1,239
-1% -$375K 0.12% 164
2021
Q1 		$27.3M Buy
97,459
+3,978
+4% +$1.07M 0.11% 173
2020
Q4 		$22.9M Buy
93,481
+41
+0% +$10.6K 0.1% 179
2020
Q3 		$26.5M Sell
93,440
-9,076
-9% -$2.53M 0.14% 144
2020
Q2 		$27.4M Buy
102,516
+3,241
+3% +$974K 0.16% 133
2020
Q1 		$31.4M Sell
99,275
-14,382
-13% -$4.36M 0.22% 99
2019
Q4 		$33.7M Sell
113,657
-859
-0.8% -$238K 0.17% 126
2019
Q3 		$26.7M Sell
114,516
-5,240
-4% -$1.22M 0.14% 157
2019
Q2 		$28M Sell
119,756
-8,979
-7% -$2.07M 0.15% 143
2019
Q1 		$30.4M Sell
128,735
-5,777
-4% -$1.82M 0.16% 139
2018
Q4 		$40.5M Sell
134,512
-752
-0.6% -$240K 0.24% 88
2018
Q3 		$47.8M Sell
135,264
-5,724
-4% -$1.97M 0.24% 85
2018
Q2 		$40.9M Sell
140,988
-6,407
-4% -$1.8M 0.21% 98
2018
Q1 		$40.4M Sell
147,395
-2,436
-2% -$756K 0.21% 100
2017
Q4 		$47.7M Buy
149,831
+2,810
+2% +$901K 0.23% 88
2017
Q3 		$46M Buy
147,021
+520
+0.4% +$154K 0.24% 86
2017
Q2 		$39.8M Sell
146,501
-3,468
-2% -$917K 0.22% 99
2017
Q1 		$41M Hold
149,969
– – 0.23% 85
2016
Q4 		$43.1M Hold
149,969
– – 0.24% 81
2016
Q3 		$46.9M Hold
149,969
– – 0.29% 62
2016
Q2 		$36.3M Sell
149,969
-6,933
-4% -$1.83M 0.23% 92
2016
Q1 		$40.8M Sell
156,902
-7,540
-5% -$1.99M 0.27% 77
2015
Q4 		$50.4M Sell
164,442
-10,042
-6% -$2.89M 0.31% 69
2015
Q3 		$50.9M Buy
174,484
+32
+0% +$10.6K 0.32% 62
2015
Q2 		$70.5M Sell
174,452
-2,071
-1% -$831K 0.41% 46
2015
Q1 		$74.5M Buy
176,523
+498
+0.3% +$196K 0.43% 43
2014
Q4 		$59.8M Sell
176,025
-861
-0.5% -$279K 0.35% 58
2014
Q3 		$58.5M Sell
176,886
-8,098
-4% -$2.67M 0.35% 52
2014
Q2 		$58.3M Sell
184,984
-3,521
-2% -$1.06M 0.33% 55
2014
Q1 		$57.7M Sell
188,505
-15,673
-8% -$4.98M 0.34% 58
2013
Q4 		$57.1M Buy
204,178
+2,818
+1% +$729K 0.31% 63
2013
Q3 		$48.5M Sell
201,360
-6,309
-3% -$1.41M 0.26% 75
2013
Q2 		$44.7M Buy
+207,669
New +$44.4M 0.25% 79

Other funds holding BIIB

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Primecap Management
Primecap Management Pasadena, California $127B AUM 44.11% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

Ohio Public Employees Retirement System (OPERS)'s BIIB Position: Q1 2026 in Review

Ohio Public Employees Retirement System (OPERS) reduced its Biogen (BIIB) stake by 2.8% in Q1 2026, selling an estimated $241K and leaving 46,062 shares worth $8.44M. The position accounts for 0.03% of the portfolio, ranked #500.

Ohio Public Employees Retirement System (OPERS) first reported a position in BIIB in Q2 2013 and has held it in 52 quarters since. The position peaked at $74.5M in Q1 2015. 1,002 funds tracked by Wall St. Rank hold BIIB as of Q1 2026.

  • Ohio Public Employees Retirement System (OPERS) held 46,062 shares of Biogen worth $8.44M as of Q1 2026.
  • Ohio Public Employees Retirement System (OPERS) sold 1,308 Biogen shares in Q1 2026, an estimated $241K.
  • Biogen made up 0.03% of Ohio Public Employees Retirement System (OPERS)'s portfolio in Q1 2026, its #500 holding.
  • Ohio Public Employees Retirement System (OPERS) first reported a position in Biogen in Q2 2013 and has held it in 52 quarters since.
  • Ohio Public Employees Retirement System (OPERS)'s Biogen position peaked at $74.5M in Q1 2015.
  • 1,002 funds tracked by Wall St. Rank held Biogen as of Q1 2026.

Based on Ohio Public Employees Retirement System (OPERS)'s 13F filing for Q1 2026, filed 14 May 2026.