Retirement Systems of Alabama
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Retirement Systems of Alabama’s Biogen BIIB Stock Holding History

Retirement Systems of Alabama’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 		$6.7M Sell
31,015
-151
-0.5% -$28.9K 0.02% 632
2026
Q1 		$5.71M Sell
31,166
-44
-0.1% -$8.11K 0.02% 693
2025
Q4 		$5.49M Sell
31,210
-65
-0.2% -$10.6K 0.02% 709
2025
Q3 		$4.38M Sell
31,275
-167
-0.5% -$22.6K 0.01% 772
2025
Q2 		$3.95M Sell
31,442
-152,109
-83% -$19M 0.01% 776
2025
Q1 		$25.1M Sell
183,551
-1,832
-1% -$262K 0.1% 201
2024
Q4 		$28.3M Buy
185,383
+154,062
+492% +$26M 0.11% 187
2024
Q3 		$6.07M Sell
31,321
-796
-2% -$167K 0.02% 668
2024
Q2 		$7.45M Buy
32,117
+136
+0.4% +$29.6K 0.03% 567
2024
Q1 		$6.9M Buy
31,981
+48
+0.2% +$11.2K 0.03% 608
2023
Q4 		$8.26M Sell
31,933
-137,713
-81% -$33.8M 0.04% 528
2023
Q3 		$43.6M Sell
169,646
-151
-0.1% -$40.4K 0.2% 106
2023
Q2 		$48.4M Sell
169,797
-9,666
-5% -$2.88M 0.22% 98
2023
Q1 		$49.9M Buy
179,463
+33,331
+23% +$9.22M 0.22% 96
2022
Q4 		$40.5M Buy
146,132
+97,932
+203% +$27.7M 0.18% 118
2022
Q3 		$12.9M Sell
48,200
-213,829
-82% -$45.4M 0.06% 329
2022
Q2 		$53.4M Sell
262,029
-1,397
-0.5% -$286K 0.23% 94
2022
Q1 		$55.5M Buy
263,426
+180,801
+219% +$39.3M 0.2% 105
2021
Q4 		$19.8M Buy
82,625
+6,073
+8% +$1.56M 0.07% 284
2021
Q3 		$21.7M Sell
76,552
-7,413
-9% -$2.43M 0.08% 244
2021
Q2 		$29.1M Sell
83,965
-307
-0.4% -$93K 0.11% 189
2021
Q1 		$23.6M Sell
84,272
-6,872
-8% -$1.85M 0.09% 234
2020
Q4 		$22.3M Buy
91,144
+4,990
+6% +$1.29M 0.09% 222
2020
Q3 		$24.4M Sell
86,154
-893
-1% -$249K 0.11% 171
2020
Q2 		$23.3M Buy
87,047
+7,725
+10% +$2.32M 0.11% 181
2020
Q1 		$25.1M Buy
79,322
+19
+0% +$5.77K 0.14% 136
2019
Q4 		$23.5M Sell
79,303
-1,469
-2% -$408K 0.1% 189
2019
Q3 		$18.8M Sell
80,772
-9,662
-11% -$2.25M 0.09% 222
2019
Q2 		$21.1M Sell
90,434
-70,663
-44% -$16.3M 0.1% 201
2019
Q1 		$38.1M Buy
161,097
+68,201
+73% +$21.5M 0.19% 103
2018
Q4 		$28M Sell
92,896
-39,500
-30% -$12.6M 0.15% 125
2018
Q3 		$46.8M Sell
132,396
-90,938
-41% -$31.3M 0.22% 89
2018
Q2 		$64.8M Sell
223,334
-1,934
-0.9% -$544K 0.32% 63
2018
Q1 		$61.7M Buy
225,268
+29,705
+15% +$9.22M 0.3% 67
2017
Q4 		$62.3M Buy
195,563
+33,614
+21% +$10.8M 0.3% 66
2017
Q3 		$50.7M Buy
161,949
+16,676
+11% +$4.94M 0.26% 74
2017
Q2 		$39.4M Sell
145,273
-791
-0.5% -$209K 0.21% 99
2017
Q1 		$39.9M Sell
146,064
-1,777
-1% -$502K 0.22% 94
2016
Q4 		$41.9M Sell
147,841
-4,684
-3% -$1.39M 0.24% 85
2016
Q3 		$47.7M Sell
152,525
-49,250
-24% -$14.6M 0.28% 74
2016
Q2 		$48.8M Buy
201,775
+1,875
+0.9% +$494K 0.29% 69
2016
Q1 		$52M Sell
199,900
-5,792
-3% -$1.53M 0.31% 63
2015
Q4 		$63M Sell
205,692
-17,076
-8% -$4.91M 0.37% 55
2015
Q3 		$65M Buy
222,768
+48,722
+28% +$16.1M 0.39% 50
2015
Q2 		$70.3M Sell
174,046
-1,087
-0.6% -$436K 0.38% 49
2015
Q1 		$73.9M Sell
175,133
-3,966
-2% -$1.56M 0.4% 47
2014
Q4 		$60.8M Sell
179,099
-82
-0% -$26.5K 0.32% 61
2014
Q3 		$59.3M Sell
179,181
-1,611
-0.9% -$531K 0.33% 58
2014
Q2 		$57M Sell
180,792
-414
-0.2% -$125K 0.32% 64
2014
Q1 		$55.4M Buy
181,206
+39,637
+28% +$12.6M 0.32% 63
2013
Q4 		$39.6M Buy
141,569
+160
+0.1% +$41.4K 0.23% 89
2013
Q3 		$34M Buy
141,409
+1,747
+1% +$391K 0.22% 97
2013
Q2 		$30.1M Buy
+139,662
New +$29.8M 0.2% 102

Other funds holding BIIB

Pictet Asset Management
Pictet Asset Management Carouge, Switzerland $105B AUM 38.07% 1-Year Est. Return
Robeco Institutional Asset Management
Robeco Institutional Asset Management Rotterdam, Netherlands $81.4B AUM 40.71% 1-Year Est. Return
AIM
Artemis Investment Management Edinburgh, United Kingdom $11.2B AUM 80.72% 1-Year Est. Return
Sumitomo Mitsui Trust Group
Sumitomo Mitsui Trust Group Minato-Ku, Tokyo, Japan $175B AUM 40.63% 1-Year Est. Return
Swedbank
Swedbank Stockholm, Sweden $116B AUM 46.87% 1-Year Est. Return
AAMU
AEGON Asset Management (UK) Edinburgh, United Kingdom $9.38B AUM 48.94% 1-Year Est. Return
Aberdeen Group
Aberdeen Group Edinburgh, United Kingdom $71.2B AUM 41.74% 1-Year Est. Return
New York State Teachers Retirement System (NYSTRS)
New York State Teachers Retirement System (NYSTRS) Albany, New York $54.2B AUM 43.77% 1-Year Est. Return
ECSS
Eurizon Capital SGR SpA Milan $37.3B AUM
ADEF
Adams Diversified Equity Fund Baltimore, Maryland $3.27B AUM 45.57% 1-Year Est. Return

Retirement Systems of Alabama's BIIB Position: Q2 2026 in Review

Retirement Systems of Alabama reduced its Biogen (BIIB) stake by 0.48% in Q2 2026, selling an estimated $28.9K and leaving 31,015 shares worth $6.7M. The position accounts for 0.02% of the portfolio, ranked #632.

Retirement Systems of Alabama first reported a position in BIIB in Q2 2013 and has held it in 53 quarters since. The position peaked at $73.9M in Q1 2015. 403 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.

  • Retirement Systems of Alabama held 31,015 shares of Biogen worth $6.7M as of Q2 2026.
  • Retirement Systems of Alabama sold 151 Biogen shares in Q2 2026, an estimated $28.9K.
  • Biogen made up 0.02% of Retirement Systems of Alabama's portfolio in Q2 2026, its #632 holding.
  • Retirement Systems of Alabama first reported a position in Biogen in Q2 2013 and has held it in 53 quarters since.
  • Retirement Systems of Alabama's Biogen position peaked at $73.9M in Q1 2015.
  • 403 funds tracked by Wall St. Rank held Biogen as of Q2 2026.

Based on Retirement Systems of Alabama's 13F filing for Q2 2026, filed 28 Jul 2026.