KLA CORP

Ticker: KLAC CUSIP: 482480100 Class: COM NEW

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

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

Q4 2025

Shares 206,116 Value ($000) $250,447 Avg Close $1171.91 Range $979.33 - $1286.81

Q3 2025

Shares 210,398 Value ($000) $226,935 Avg Close $930.36 Range $830.85 - $1083.78

Q2 2025

Shares 208,917 Value ($000) $187,135 Avg Close $748.55 Range $547.89 - $911.31

Q1 2025

Shares 209,103 Value ($000) $142,148 Avg Close $714.90 Range $626.53 - $787.27

Q4 2024

Shares 210,932 Value ($000) $132,912 Avg Close $669.07 Range $604.24 - $823.66

Q3 2024

Shares 218,954 Value ($000) $169,560 Avg Close $775.08 Range $639.56 - $884.65

Q2 2024

Shares 220,572 Value ($000) $181,864 Avg Close $728.44 Range $613.80 - $865.13

Q1 2024

Shares 223,090 Value ($000) $155,844 Avg Close $631.89 Range $533.07 - $718.19

Q4 2023

Shares 221,732 Value ($000) $128,893 Avg Close $510.90 Range $439.38 - $587.15

Q3 2023

Shares 218,700 Value ($000) $100,309 Avg Close $469.45 Range $431.39 - $509.83

Q2 2023

Shares 228,536 Value ($000) $110,845 Avg Close $407.84 Range $346.68 - $477.23

Q1 2023

Shares 238,143 Value ($000) $95,060 Avg Close $383.34 Range $350.54 - $417.01

Q4 2022

Shares 241,933 Value ($000) $91,216 Avg Close $337.92 Range $242.12 - $407.40

Q3 2022

Shares 248,049 Value ($000) $75,067 Avg Close $334.63 Range $272.74 - $384.72

Q2 2022

Shares 255,660 Value ($000) $81,576 Avg Close $323.74 Range $294.07 - $359.05

Q1 2022

Shares 257,672 Value ($000) $94,323 Avg Close $358.99 Range $298.47 - $438.16

Q4 2021

Shares 274,274 Value ($000) $117,968 Avg Close $369.50 Range $304.02 - $424.08

Q3 2021

Shares 267,482 Value ($000) $89,475 Avg Close $318.72 Range $273.94 - $358.15

Q2 2021

Shares 275,221 Value ($000) $89,229 Avg Close $304.93 Range $271.63 - $341.75

Q1 2021

Shares 291,533 Value ($000) $96,323 Avg Close $285.88 Range $244.18 - $324.26

Q4 2020

Shares 290,501 Value ($000) $75,214 Avg Close $220.47 Range $179.54 - $254.78

Q3 2020

Shares 285,794 Value ($000) $55,370 Avg Close $186.13 Range $161.70 - $206.30

Q2 2020

Shares 279,690 Value ($000) $54,394 Avg Close $160.31 Range $117.44 - $185.62

Q1 2020

Shares 278,636 Value ($000) $40,051 Avg Close $150.21 Range $103.06 - $171.72

Q4 2019

Shares 290,341 Value ($000) $51,730 Avg Close $155.73 Range $142.30 - $167.48

Q3 2019

Shares 270,947 Value ($000) $43,202 Avg Close $129.13 Range $106.76 - $150.68

Q2 2019

Shares 271,086 Value ($000) $32,042 Avg Close $106.14 Range $93.34 - $118.03

Q1 2019

Shares 277,028 Value ($000) $33,080 Avg Close $98.08 Range $77.84 - $114.05

Q4 2018

Shares 254,070 Value ($000) $22,737 Avg Close $84.23 Range $73.26 - $92.78

Q3 2018

Shares 247,403 Value ($000) $25,163 Avg Close $98.18 Range $89.72 - $109.57

Q2 2018

Shares 247,518 Value ($000) $25,378 Avg Close $97.03 Range $87.08 - $106.13

Q1 2018

Shares 253,036 Value ($000) $27,583 Avg Close $98.66 Range $84.98 - $110.22

Q4 2017

Shares 261,437 Value ($000) $27,469 Avg Close $92.93 Range $87.45 - $101.17

Q3 2017

Shares 264,227 Value ($000) $28,008 Avg Close $83.67 Range $76.77 - $93.25

Q2 2017

Shares 287,210 Value ($000) $26,283 Avg Close $86.97 Range $79.53 - $95.69

Q1 2017

Shares 310,312 Value ($000) $29,501 Avg Close $76.28 Range $67.20 - $84.16

Q4 2016

Shares 324,412 Value ($000) $25,525 Avg Close $65.71 Range $59.77 - $71.83

Q3 2016

Shares 333,112 Value ($000) $23,221 Avg Close $61.47 Range $57.31 - $66.21

Q2 2016

Shares 387,612 Value ($000) $28,393 Avg Close $60.76 Range $57.25 - $63.93

Q1 2016

Shares 387,612 Value ($000) $28,222 Avg Close $56.58 Range $52.61 - $61.78

Q4 2015

Shares 296,325 Value ($000) $20,550 Avg Close $53.38 Range $40.48 - $58.84

Q3 2015

Shares 291,675 Value ($000) $14,584 Avg Close $42.50 Range $37.34 - $47.18

Q2 2015

Shares 292,075 Value ($000) $16,418 Avg Close $47.89 Range $45.44 - $49.96

Q1 2015

Shares 304,781 Value ($000) $17,766 Avg Close $52.00 Range $46.89 - $57.67

Q4 2014

Shares 309,872 Value ($000) $21,790 Avg Close $52.04 Range $42.19 - $59.17

Q3 2014

Shares 306,960 Value ($000) $24,182 Avg Close $48.63 Range $45.01 - $52.55

Q2 2014

Shares 302,776 Value ($000) $21,994 Avg Close $42.48 Range $39.45 - $46.73

Q1 2014

Shares 301,776 Value ($000) $20,865 Avg Close $41.11 Range $37.63 - $45.13

Q4 2013

Shares 300,376 Value ($000) $19,362 Avg Close $39.78 Range $36.98 - $42.15

Q3 2013

Shares 298,276 Value ($000) $18,150 Avg Close $36.71 Range $33.87 - $39.26

Q2 2013

Shares 289,069 Value ($000) $16,110 Avg Close $33.95 Range $31.11 - $35.91

Q1 2013

Shares 290,947 Value ($000) $15,345 Avg Close $32.87 Range $29.13 - $35.65

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	206,116	$250,447	$1171.91	$979.33 - $1286.81
Q3 2025	210,398	$226,935	$930.36	$830.85 - $1083.78
Q2 2025	208,917	$187,135	$748.55	$547.89 - $911.31
Q1 2025	209,103	$142,148	$714.90	$626.53 - $787.27
Q4 2024	210,932	$132,912	$669.07	$604.24 - $823.66
Q3 2024	218,954	$169,560	$775.08	$639.56 - $884.65
Q2 2024	220,572	$181,864	$728.44	$613.80 - $865.13
Q1 2024	223,090	$155,844	$631.89	$533.07 - $718.19
Q4 2023	221,732	$128,893	$510.90	$439.38 - $587.15
Q3 2023	218,700	$100,309	$469.45	$431.39 - $509.83
Q2 2023	228,536	$110,845	$407.84	$346.68 - $477.23
Q1 2023	238,143	$95,060	$383.34	$350.54 - $417.01
Q4 2022	241,933	$91,216	$337.92	$242.12 - $407.40
Q3 2022	248,049	$75,067	$334.63	$272.74 - $384.72
Q2 2022	255,660	$81,576	$323.74	$294.07 - $359.05
Q1 2022	257,672	$94,323	$358.99	$298.47 - $438.16
Q4 2021	274,274	$117,968	$369.50	$304.02 - $424.08
Q3 2021	267,482	$89,475	$318.72	$273.94 - $358.15
Q2 2021	275,221	$89,229	$304.93	$271.63 - $341.75
Q1 2021	291,533	$96,323	$285.88	$244.18 - $324.26
Q4 2020	290,501	$75,214	$220.47	$179.54 - $254.78
Q3 2020	285,794	$55,370	$186.13	$161.70 - $206.30
Q2 2020	279,690	$54,394	$160.31	$117.44 - $185.62
Q1 2020	278,636	$40,051	$150.21	$103.06 - $171.72
Q4 2019	290,341	$51,730	$155.73	$142.30 - $167.48
Q3 2019	270,947	$43,202	$129.13	$106.76 - $150.68
Q2 2019	271,086	$32,042	$106.14	$93.34 - $118.03
Q1 2019	277,028	$33,080	$98.08	$77.84 - $114.05
Q4 2018	254,070	$22,737	$84.23	$73.26 - $92.78
Q3 2018	247,403	$25,163	$98.18	$89.72 - $109.57
Q2 2018	247,518	$25,378	$97.03	$87.08 - $106.13
Q1 2018	253,036	$27,583	$98.66	$84.98 - $110.22
Q4 2017	261,437	$27,469	$92.93	$87.45 - $101.17
Q3 2017	264,227	$28,008	$83.67	$76.77 - $93.25
Q2 2017	287,210	$26,283	$86.97	$79.53 - $95.69
Q1 2017	310,312	$29,501	$76.28	$67.20 - $84.16
Q4 2016	324,412	$25,525	$65.71	$59.77 - $71.83
Q3 2016	333,112	$23,221	$61.47	$57.31 - $66.21
Q2 2016	387,612	$28,393	$60.76	$57.25 - $63.93
Q1 2016	387,612	$28,222	$56.58	$52.61 - $61.78
Q4 2015	296,325	$20,550	$53.38	$40.48 - $58.84
Q3 2015	291,675	$14,584	$42.50	$37.34 - $47.18
Q2 2015	292,075	$16,418	$47.89	$45.44 - $49.96
Q1 2015	304,781	$17,766	$52.00	$46.89 - $57.67
Q4 2014	309,872	$21,790	$52.04	$42.19 - $59.17
Q3 2014	306,960	$24,182	$48.63	$45.01 - $52.55
Q2 2014	302,776	$21,994	$42.48	$39.45 - $46.73
Q1 2014	301,776	$20,865	$41.11	$37.63 - $45.13
Q4 2013	300,376	$19,362	$39.78	$36.98 - $42.15
Q3 2013	298,276	$18,150	$36.71	$33.87 - $39.26
Q2 2013	289,069	$16,110	$33.95	$31.11 - $35.91
Q1 2013	290,947	$15,345	$32.87	$29.13 - $35.65