California State Teachers Retirement System (CalSTRS)’s Biogen BIIB Stock Holding History
Bought
Maintained
Sold
| Quarter | Market Value | Status | Shares |
Change in Stake | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2025
Q3 | $32.9M | Sell |
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|
2025
Q2 | $30M | Buy |
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|
2025
Q1 | $31.5M | Sell |
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|
2024
Q4 | $35.7M | Buy |
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|
2024
Q3 | $44.7M | Sell |
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|
2024
Q2 | $53.5M | Buy |
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|
2024
Q1 | $49M | Buy |
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|
2023
Q4 | $58.6M | Buy |
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|
2023
Q3 | $58.2M | Sell |
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|
2023
Q2 | $66.5M | Sell |
|
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|
2023
Q1 | $68.9M | Sell |
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|
2022
Q4 | $69.7M | Buy |
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|
2022
Q3 | $66.8M | Sell |
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|
2022
Q2 | $51.4M | Sell |
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|
2022
Q1 | $54.1M | Sell |
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|
2021
Q4 | $65.7M | Buy |
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|
2021
Q3 | $75.4M | Buy |
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|
2021
Q2 | $91.5M | Sell |
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|
2021
Q1 | $82.5M | Sell |
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|
2020
Q4 | $72.6M | Sell |
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|
2020
Q3 | $95.3M | Sell |
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|
2020
Q2 | $95.3M | Sell |
|
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|
2020
Q1 | $119M | Sell |
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|
2019
Q4 | $116M | Buy |
|
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|
2019
Q3 | $78.8M | Sell |
|
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|
2019
Q2 | $82.1M | Buy |
|
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|
2019
Q1 | $82.7M | Buy |
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|
2018
Q4 | $105M | Buy |
|
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|
2018
Q3 | $115M | Sell |
|
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|
2018
Q2 | $99M | Sell |
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|
2018
Q1 | $93.4M | Sell |
|
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|
2017
Q4 | $112M | Sell |
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|
2017
Q3 | $112M | Sell |
|
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|
2017
Q2 | $106M | Sell |
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|
2017
Q1 | $119M | Sell |
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|
2016
Q4 | $129M | Sell |
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|
2016
Q3 | $147M | Buy |
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|
2016
Q2 | $112M | Sell |
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|
2016
Q1 | $123M | Buy |
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|
2015
Q4 | $127M | Sell |
|
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|
2015
Q3 | $125M | Sell |
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|
2015
Q2 | $174M | Sell |
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|
2015
Q1 | $184M | Sell |
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|
2014
Q4 | $150M | Buy |
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|
2014
Q3 | $145M | Buy |
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|
2014
Q2 | $137M | Buy |
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|
2014
Q1 | $132M | Buy |
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|
2013
Q4 | $120M | Buy |
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|
2013
Q3 | $103M | Buy |
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|
2013
Q2 | $89M | Buy |
|