CENTURY ALUM CO

Ticker: CENX CUSIP: 156431108 Class: EQTY

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM's Holding History (CIK: 0001081019)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 51,225 Value ($000) $2,007 Avg Close $31.24 Range $25.40 - $40.83

Q3 2025

Shares 51,243 Value ($000) $1,504 Avg Close $22.67 Range $17.75 - $30.08

Q2 2025

Shares 47,972 Value ($000) $864 Avg Close $16.98 Range $13.05 - $20.43

Q1 2025

Shares 51,797 Value ($000) $961 Avg Close $19.21 Range $16.30 - $22.92

Q4 2024

Shares 51,797 Value ($000) $944 Avg Close $19.65 Range $14.89 - $25.39

Q3 2024

Shares 52,383 Value ($000) $850 Avg Close $15.15 Range $11.40 - $21.37

Q2 2024

Shares 53,896 Value ($000) $903 Avg Close $17.02 Range $14.73 - $19.88

Q1 2024

Shares 55,155 Value ($000) $849 Avg Close $11.23 Range $9.65 - $15.60

Q4 2023

Shares 58,040 Value ($000) $705 Avg Close $7.85 Range $5.70 - $13.17

Q3 2023

Shares 60,515 Value ($000) $435 Avg Close $8.06 Range $6.42 - $9.38

Q2 2023

Shares 66,237 Value ($000) $578 Avg Close $8.69 Range $7.18 - $10.19

Q1 2023

Shares 63,452 Value ($000) $635 Avg Close $10.36 Range $7.87 - $12.97

Q4 2022

Shares 64,365 Value ($000) $527 Avg Close $7.55 Range $5.32 - $10.23

Q3 2022

Shares 63,688 Value ($000) $336 Avg Close $7.60 Range $5.27 - $10.21

Q2 2022

Shares 64,997 Value ($000) $479 Avg Close $15.54 Range $6.93 - $29.24

Q1 2022

Shares 67,919 Value ($000) $1,787 Avg Close $21.04 Range $14.85 - $30.36

Q4 2021

Shares 73,766 Value ($000) $1,222 Avg Close $14.64 Range $12.34 - $17.65

Q3 2021

Shares 72,273 Value ($000) $972 Avg Close $12.57 Range $10.39 - $15.09

Q2 2021

Shares 70,776 Value ($000) $912 Avg Close $14.40 Range $11.41 - $17.94

Q1 2021

Shares 76,164 Value ($000) $1,345 Avg Close $14.25 Range $9.04 - $19.60

Q4 2020

Shares 76,439 Value ($000) $843 Avg Close $9.07 Range $6.27 - $12.85

Q3 2020

Shares 76,439 Value ($000) $544 Avg Close $8.71 Range $6.72 - $11.33

Q2 2020

Shares 79,153 Value ($000) $564 Avg Close $5.29 Range $2.91 - $7.90

Q1 2020

Shares 79,153 Value ($000) $287 Avg Close $5.60 Range $3.01 - $8.23

Q4 2019

Shares 78,259 Value ($000) $588 Avg Close $6.93 Range $5.80 - $8.42

Q3 2019

Shares 78,259 Value ($000) $519 Avg Close $6.62 Range $5.02 - $7.89

Q2 2019

Shares 76,487 Value ($000) $529 Avg Close $7.43 Range $5.37 - $9.91

Q1 2019

Shares 76,487 Value ($000) $679 Avg Close $8.65 Range $6.98 - $9.98

Q4 2018

Shares 78,265 Value ($000) $572 Avg Close $9.06 Range $6.54 - $12.25

Q3 2018

Shares 76,447 Value ($000) $915 Avg Close $12.86 Range $11.04 - $15.58

Q2 2018

Shares 76,451 Value ($000) $1,204 Avg Close $16.93 Range $14.14 - $20.19

Q1 2018

Shares 75,945 Value ($000) $1,256 Avg Close $20.90 Range $15.56 - $24.77

Q4 2017

Shares 78,607 Value ($000) $1,544 Avg Close $15.31 Range $13.00 - $20.30

Q3 2017

Shares 79,783 Value ($000) $1,323 Avg Close $17.26 Range $12.94 - $20.68

Q2 2017

Shares 88,328 Value ($000) $1,376 Avg Close $13.95 Range $11.59 - $17.28

Q1 2017

Shares 98,228 Value ($000) $1,247 Avg Close $13.28 Range $8.39 - $16.53

Q4 2016

Shares 102,928 Value ($000) $881 Avg Close $8.55 Range $6.51 - $10.69

Q3 2016

Shares 105,628 Value ($000) $734 Avg Close $6.83 Range $5.53 - $8.45

Q2 2016

Shares 104,628 Value ($000) $662 Avg Close $7.02 Range $5.64 - $9.40

Q1 2016

Shares 104,433 Value ($000) $736 Avg Close $5.54 Range $2.63 - $8.94

Q4 2015

Shares 91,333 Value ($000) $404 Avg Close $4.29 Range $3.19 - $7.21

Q3 2015

Shares 89,709 Value ($000) $413 Avg Close $6.98 Range $4.07 - $10.59

Q2 2015

Shares 90,009 Value ($000) $939 Avg Close $12.74 Range $10.13 - $14.98

Q1 2015

Shares 93,765 Value ($000) $1,294 Avg Close $20.13 Range $12.87 - $26.97

Q4 2014

Shares 95,865 Value ($000) $2,339 Avg Close $25.81 Range $20.79 - $31.75

Q3 2014

Shares 94,959 Value ($000) $2,466 Avg Close $22.02 Range $15.77 - $29.54

Q2 2014

Shares 93,920 Value ($000) $1,473 Avg Close $14.18 Range $12.63 - $15.94

Q1 2014

Shares 93,120 Value ($000) $1,230 Avg Close $11.63 Range $9.67 - $13.37

Q4 2013

Shares 93,120 Value ($000) $974 Avg Close $8.91 Range $7.80 - $10.49

Q3 2013

Shares 92,520 Value ($000) $745 Avg Close $8.84 Range $7.65 - $10.53

Q2 2013

Shares 89,605 Value ($000) $832 Avg Close $8.61 Range $6.26 - $10.60

Q1 2013

Shares 89,353 Value ($000) $692 Avg Close $8.63 Range $7.68 - $9.70

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	51,225	$2,007	$31.24	$25.40 - $40.83
Q3 2025	51,243	$1,504	$22.67	$17.75 - $30.08
Q2 2025	47,972	$864	$16.98	$13.05 - $20.43
Q1 2025	51,797	$961	$19.21	$16.30 - $22.92
Q4 2024	51,797	$944	$19.65	$14.89 - $25.39
Q3 2024	52,383	$850	$15.15	$11.40 - $21.37
Q2 2024	53,896	$903	$17.02	$14.73 - $19.88
Q1 2024	55,155	$849	$11.23	$9.65 - $15.60
Q4 2023	58,040	$705	$7.85	$5.70 - $13.17
Q3 2023	60,515	$435	$8.06	$6.42 - $9.38
Q2 2023	66,237	$578	$8.69	$7.18 - $10.19
Q1 2023	63,452	$635	$10.36	$7.87 - $12.97
Q4 2022	64,365	$527	$7.55	$5.32 - $10.23
Q3 2022	63,688	$336	$7.60	$5.27 - $10.21
Q2 2022	64,997	$479	$15.54	$6.93 - $29.24
Q1 2022	67,919	$1,787	$21.04	$14.85 - $30.36
Q4 2021	73,766	$1,222	$14.64	$12.34 - $17.65
Q3 2021	72,273	$972	$12.57	$10.39 - $15.09
Q2 2021	70,776	$912	$14.40	$11.41 - $17.94
Q1 2021	76,164	$1,345	$14.25	$9.04 - $19.60
Q4 2020	76,439	$843	$9.07	$6.27 - $12.85
Q3 2020	76,439	$544	$8.71	$6.72 - $11.33
Q2 2020	79,153	$564	$5.29	$2.91 - $7.90
Q1 2020	79,153	$287	$5.60	$3.01 - $8.23
Q4 2019	78,259	$588	$6.93	$5.80 - $8.42
Q3 2019	78,259	$519	$6.62	$5.02 - $7.89
Q2 2019	76,487	$529	$7.43	$5.37 - $9.91
Q1 2019	76,487	$679	$8.65	$6.98 - $9.98
Q4 2018	78,265	$572	$9.06	$6.54 - $12.25
Q3 2018	76,447	$915	$12.86	$11.04 - $15.58
Q2 2018	76,451	$1,204	$16.93	$14.14 - $20.19
Q1 2018	75,945	$1,256	$20.90	$15.56 - $24.77
Q4 2017	78,607	$1,544	$15.31	$13.00 - $20.30
Q3 2017	79,783	$1,323	$17.26	$12.94 - $20.68
Q2 2017	88,328	$1,376	$13.95	$11.59 - $17.28
Q1 2017	98,228	$1,247	$13.28	$8.39 - $16.53
Q4 2016	102,928	$881	$8.55	$6.51 - $10.69
Q3 2016	105,628	$734	$6.83	$5.53 - $8.45
Q2 2016	104,628	$662	$7.02	$5.64 - $9.40
Q1 2016	104,433	$736	$5.54	$2.63 - $8.94
Q4 2015	91,333	$404	$4.29	$3.19 - $7.21
Q3 2015	89,709	$413	$6.98	$4.07 - $10.59
Q2 2015	90,009	$939	$12.74	$10.13 - $14.98
Q1 2015	93,765	$1,294	$20.13	$12.87 - $26.97
Q4 2014	95,865	$2,339	$25.81	$20.79 - $31.75
Q3 2014	94,959	$2,466	$22.02	$15.77 - $29.54
Q2 2014	93,920	$1,473	$14.18	$12.63 - $15.94
Q1 2014	93,120	$1,230	$11.63	$9.67 - $13.37
Q4 2013	93,120	$974	$8.91	$7.80 - $10.49
Q3 2013	92,520	$745	$8.84	$7.65 - $10.53
Q2 2013	89,605	$832	$8.61	$6.26 - $10.60
Q1 2013	89,353	$692	$8.63	$7.68 - $9.70