Commonwealth of Pennsylvania Public School Employees Retirement System’s Biogen BIIB Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2026
Q2 | $7.05M | Sell |
32,609
-1,577
| -5% | -$302K | 0.03% | 367 |
|
|
2026
Q1 | $6.27M | Buy |
34,186
+62
| +0.2% | +$11.4K | 0.03% | 395 |
|
|
2025
Q4 | $6.01M | Sell |
34,124
-1,084
| -3% | -$177K | 0.03% | 402 |
|
|
2025
Q3 | $4.93M | Sell |
35,208
-729
| -2% | -$98.5K | 0.02% | 468 |
|
|
2025
Q2 | $4.51M | Buy |
35,937
+2,463
| +7% | +$307K | 0.02% | 487 |
|
|
2025
Q1 | $4.58M | Buy |
33,474
+2,490
| +8% | +$356K | 0.03% | 446 |
|
|
2024
Q4 | $4.74M | Sell |
30,984
-725
| -2% | -$122K | 0.03% | 433 |
|
|
2024
Q3 | $6.15M | Sell |
31,709
-272
| -0.9% | -$56.9K | 0.04% | 363 |
|
|
2024
Q2 | $7.41M | Buy |
31,981
+172
| +0.5% | +$37.4K | 0.05% | 308 |
|
|
2024
Q1 | $6.86M | Buy |
31,809
+78
| +0.2% | +$18.3K | 0.05% | 325 |
|
|
2023
Q4 | $8.21M | Buy |
31,731
+2,612
| +9% | +$642K | 0.06% | 272 |
|
|
2023
Q3 | $7.48M | Buy |
29,119
+3,876
| +15% | +$1.04M | 0.06% | 246 |
|
|
2023
Q2 | $7.19M | Buy |
25,243
+831
| +3% | +$247K | 0.06% | 250 |
|
|
2023
Q1 | $6.79M | Buy |
24,412
+71
| +0.3% | +$19.6K | 0.06% | 249 |
|
|
2022
Q4 | $6.74M | Buy |
24,341
+3,115
| +15% | +$880K | 0.06% | 239 |
|
|
2022
Q3 | $5.67M | Sell |
21,226
-97
| -0.5% | -$20.6K | 0.06% | 230 |
|
|
2022
Q2 | $4.35M | Buy |
21,323
+1,668
| +8% | +$341K | 0.05% | 309 |
|
|
2022
Q1 | $4.14M | Buy |
19,655
+1,217
| +7% | +$265K | 0.04% | 369 |
|
|
2021
Q4 | $4.42M | Sell |
18,438
-238
| -1% | -$61.2K | 0.05% | 343 |
|
|
2021
Q3 | $5.29M | Sell |
18,676
-187
| -1% | -$61.3K | 0.06% | 268 |
|
|
2021
Q2 | $6.53M | Sell |
18,863
-189
| -1% | -$57.3K | 0.07% | 233 |
|
|
2021
Q1 | $5.33M | Sell |
19,052
-176
| -0.9% | -$47.5K | 0.07% | 250 |
|
|
2020
Q4 | $4.71M | Buy |
19,228
+4,560
| +31% | +$1.18M | 0.07% | 251 |
|
|
2020
Q3 | $4.16M | Buy |
14,668
+5,337
| +57% | +$1.49M | 0.08% | 208 |
|
|
2020
Q2 | $2.5M | Sell |
9,331
-2,197
| -19% | -$660K | 0.05% | 238 |
|
|
2020
Q1 | $3.65M | Sell |
11,528
-92
| -0.8% | -$27.9K | 0.08% | 149 |
|
|
2019
Q4 | $3.45M | Sell |
11,620
-199
| -2% | -$55.2K | 0.06% | 203 |
|
|
2019
Q3 | $2.75M | Buy |
11,819
+3,207
| +37% | +$747K | 0.05% | 226 |
|
|
2019
Q2 | $2.01M | Sell |
8,612
-2,888
| -25% | -$667K | 0.03% | 274 |
|
|
2019
Q1 | $2.72M | Buy |
11,500
+508
| +5% | +$160K | 0.05% | 215 |
|
|
2018
Q4 | $3.31M | Sell |
10,992
-5,539
| -34% | -$1.77M | 0.07% | 172 |
|
|
2018
Q3 | $5.84M | Sell |
16,531
-5,558
| -25% | -$1.91M | 0.08% | 169 |
|
|
2018
Q2 | $6.41M | Buy |
22,089
+3,158
| +17% | +$888K | 0.09% | 177 |
|
|
2018
Q1 | $5.18M | Buy |
18,931
+19
| +0.1% | +$5.9K | 0.07% | 213 |
|
|
2017
Q4 | $6.03M | Buy |
18,912
+1,717
| +10% | +$551K | 0.08% | 189 |
|
|
2017
Q3 | $5.38M | Buy |
17,195
+1,325
| +8% | +$392K | 0.08% | 197 |
|
|
2017
Q2 | $4.31M | Sell |
15,870
-145
| -0.9% | -$38.3K | 0.07% | 222 |
|
|
2017
Q1 | $4.38M | Buy |
16,015
+3,543
| +28% | +$1M | 0.07% | 209 |
|
|
2016
Q4 | $3.54M | Sell |
12,472
-43
| -0.3% | -$12.7K | 0.07% | 217 |
|
|
2016
Q3 | $3.92M | Sell |
12,515
-5,024
| -29% | -$1.49M | 0.08% | 198 |
|
|
2016
Q2 | $4.24M | Buy |
17,539
+1,312
| +8% | +$346K | 0.08% | 217 |
|
|
2016
Q1 | $4.22M | Buy |
16,227
+1,664
| +11% | +$440K | 0.09% | 201 |
|
|
2015
Q4 | $4.46M | Sell |
14,563
-547
| -4% | -$157K | 0.09% | 183 |
|
|
2015
Q3 | $4.41M | Sell |
15,110
-11,305
| -43% | -$3.73M | 0.1% | 173 |
|
|
2015
Q2 | $10.7M | Sell |
26,415
-500
| -2% | -$201K | 0.19% | 121 |
|
|
2015
Q1 | $11.4M | Sell |
26,915
-16,174
| -38% | -$6.37M | 0.2% | 109 |
|
|
2014
Q4 | $14.6M | Sell |
43,089
-219
| -0.5% | -$70.8K | 0.22% | 98 |
|
|
2014
Q3 | $14.3M | Sell |
43,308
-136
| -0.3% | -$44.8K | 0.22% | 98 |
|
|
2014
Q2 | $13.7M | Sell |
43,444
-1,847
| -4% | -$556K | 0.2% | 110 |
|
|
2014
Q1 | $13.9M | Buy |
45,291
+205
| +0.5% | +$65.1K | 0.21% | 105 |
|
|
2013
Q4 | $12.6M | Sell |
45,086
-3,454
| -7% | -$893K | 0.2% | 117 |
|
|
2013
Q3 | $11.7M | Buy |
48,540
+205
| +0.4% | +$45.9K | 0.19% | 128 |
|
|
2013
Q2 | $10.4M | Buy |
+48,335
| New | +$10.3M | 0.18% | 136 |
|
Other funds holding BIIB
Commonwealth of Pennsylvania Public School Employees Retirement System's BIIB Position: Q2 2026 in Review
Commonwealth of Pennsylvania Public School Employees Retirement System reduced its Biogen (BIIB) stake by 4.6% in Q2 2026, selling an estimated $302K and leaving 32,609 shares worth $7.05M. The position accounts for 0.03% of the portfolio, ranked #367.
Commonwealth of Pennsylvania Public School Employees Retirement System first reported a position in BIIB in Q2 2013 and has held it in 53 quarters since. The position peaked at $14.6M in Q4 2014. 664 funds tracked by Wall St. Rank hold BIIB as of Q2 2026.
- Commonwealth of Pennsylvania Public School Employees Retirement System held 32,609 shares of Biogen worth $7.05M as of Q2 2026.
- Commonwealth of Pennsylvania Public School Employees Retirement System sold 1,577 Biogen shares in Q2 2026, an estimated $302K.
- Biogen made up 0.03% of Commonwealth of Pennsylvania Public School Employees Retirement System's portfolio in Q2 2026, its #367 holding.
- Commonwealth of Pennsylvania Public School Employees Retirement System first reported a position in Biogen in Q2 2013 and has held it in 53 quarters since.
- Commonwealth of Pennsylvania Public School Employees Retirement System's Biogen position peaked at $14.6M in Q4 2014.
- 664 funds tracked by Wall St. Rank held Biogen as of Q2 2026.
Based on Commonwealth of Pennsylvania Public School Employees Retirement System's 13F filing for Q2 2026, filed 17 Jul 2026.