California State Teachers Retirement System Biogen Inc. Transaction History

California State Teachers Retirement System

$84.1 Billion
Q3 2024

A detailed history of California State Teachers Retirement System transactions in Biogen Inc. stock. As of the latest transaction made, California State Teachers Retirement System holds 230,507 shares of BIIB stock, worth $34.7 Million. This represents 0.05% of its overall portfolio holdings.

Number of Shares

230,507

Previous 230,935 0.19%

Holding current value

$34.7 Million

Previous $53.5 Million 16.54%

% of portfolio

0.05%

Previous 0.07%

29 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q3 2024 Nov 14, 2024	SELL	$189.07 - $236.8 $80,921 - $101,350	-428 Reduced 0.19%	230,507 $44.7 Million
Q2 2024 Aug 14, 2024	BUY	$190.52 - $236.72 $735,978 - $914,449	3,863 Added 1.7%	230,935 $53.5 Million
Q1 2024 May 15, 2024	BUY	$212.02 - $267.71 $137,813 - $174,011	650 Added 0.29%	227,072 $49 Million
Q4 2023 Feb 13, 2024	BUY	$222.59 - $267.94 $19,810 - $23,846	89 Added 0.04%	226,422 $58.6 Million
Q3 2023 Nov 14, 2023	SELL	$253.3 - $285.89 $1.83 Million - $2.06 Million	-7,220 Reduced 3.09%	226,333 $58.2 Million
Q2 2023 Aug 21, 2023	SELL	$275.25 - $318.06 $3.92 Million - $4.53 Million	-14,231 Reduced 5.74%	233,553 $66.5 Million
Q1 2023 May 09, 2023	SELL	$256.56 - $292.34 $959,021 - $1.09 Million	-3,738 Reduced 1.49%	247,784 $68.9 Million
Q4 2022 Feb 14, 2023	BUY	$252.44 - $306.72 $349,376 - $424,500	1,384 Added 0.55%	251,522 $69.7 Million
Q3 2022 Nov 18, 2022	SELL	$194.69 - $268.46 $374,583 - $516,517	-1,924 Reduced 0.76%	250,138 $66.8 Million
Q2 2022 Aug 15, 2022	SELL	$187.54 - $223.02 $877,874 - $1.04 Million	-4,681 Reduced 1.82%	252,062 $51.4 Million
Q1 2022 May 16, 2022	SELL	$193.77 - $244.14 $3.31 Million - $4.18 Million	-17,102 Reduced 6.25%	256,743 $54.1 Million
Q4 2021 Feb 15, 2022	BUY	$223.92 - $287.77 $1.67 Million - $2.15 Million	7,466 Added 2.8%	273,845 $65.7 Million
Q3 2021 Nov 15, 2021	BUY	$282.99 - $369.05 $604,749 - $788,659	2,137 Added 0.81%	266,379 $75.4 Million
Q2 2021 Aug 16, 2021	SELL	$259.0 - $414.71 $7.97 Million - $12.8 Million	-30,775 Reduced 10.43%	264,242 $91.5 Million
Q1 2021 May 18, 2021	SELL	$242.95 - $284.63 $361,752 - $423,814	-1,489 Reduced 0.5%	295,017 $82.5 Million
Q4 2020 Feb 16, 2021	SELL	$236.26 - $355.63 $9.29 Million - $14 Million	-39,337 Reduced 11.71%	296,506 $72.6 Million
Q3 2020 Nov 17, 2020	SELL	$264.77 - $305.71 $5.42 Million - $6.26 Million	-20,466 Reduced 5.74%	335,843 $95.3 Million
Q2 2020 Aug 17, 2020	SELL	$258.66 - $342.55 $5.04 Million - $6.67 Million	-19,486 Reduced 5.19%	356,309 $95.3 Million
Q1 2020 May 13, 2020	SELL	$268.85 - $341.04 $3.86 Million - $4.9 Million	-14,354 Reduced 3.68%	375,795 $119 Million
Q4 2019 Feb 14, 2020	BUY	$220.06 - $304.07 $11.4 Million - $15.7 Million	51,682 Added 15.27%	390,149 $116 Million
Q3 2019 Nov 15, 2019	SELL	$217.44 - $243.88 $2.71 Million - $3.03 Million	-12,443 Reduced 3.55%	338,467 $78.8 Million
Q2 2019 Aug 14, 2019	BUY	$219.29 - $241.72 $221,921 - $244,620	1,012 Added 0.29%	350,910 $82.1 Million
Q1 2019 May 09, 2019	BUY	$216.71 - $338.96 $517,503 - $809,436	2,388 Added 0.69%	349,898 $82.7 Million
Q4 2018 Feb 13, 2019	BUY	$278.5 - $352.75 $5.94 Million - $7.53 Million	21,342 Added 6.54%	347,510 $105 Million
Q3 2018 Nov 14, 2018	SELL	$293.51 - $383.83 $4.34 Million - $5.68 Million	-14,802 Reduced 4.34%	326,168 $115 Million
Q2 2018 Aug 14, 2018	SELL	$257.52 - $306.91 $76,740 - $91,459	-298 Reduced 0.09%	340,970 $99 Million
Q1 2018 May 15, 2018	SELL	$260.13 - $367.91 $3 Million - $4.25 Million	-11,551 Reduced 3.27%	341,268 $93.4 Million
Q4 2017 Feb 14, 2018	SELL	$307.64 - $344.58 $1.61 Million - $1.81 Million	-5,241 Reduced 1.46%	352,819 $112 Million
Q3 2017 Nov 13, 2017	BUY	$281.15 - $329.69 $101 Million - $118 Million	358,060	358,060 $112 Million

Others Institutions Holding BIIB

# of Institutions

1,038

Shares Held

126M

Call Options Held

1.13M

Put Options Held

1.43M

View Full List

About BIOGEN INC.

Ticker BIIB
Exchange NASDAQ
Sector Healthcare
Industry Drug Manufacturers—General
Shares Outstandng 144,000,992
Market Cap $21.7B
Description
Biogen Inc. discovers, develops, manufactures, and delivers therapies for treating neurological and neurodegenerative diseases. The company offers TECFIDERA, VUMERITY, AVONEX, PLEGRIDY, TYSABRI, and FAMPYRA for multiple sclerosis (MS); SPINRAZA for spinal muscular atrophy; and FUMADERM to treat plaque psoriasis. It also provides BENEPALI, an eta...

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California State Teachers Retirement System Biogen Inc. Transaction History