ALLEGHENY TECHNOLOGIES INC

Ticker: ATI CUSIP: 01741R102 Class: EQTY

MUTUAL OF AMERICA CAPITAL MANAGEMENT LLC's Holding History (CIK: 0000922127)

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

Q4 2025

Shares 56,543 Value ($000) $6,489 Avg Close $97.45 Range $79.29 - $117.48

Q3 2025

Shares 63,655 Value ($000) $5,178 Avg Close $81.04 Range $70.42 - $96.20

Q2 2025

Shares 70,155 Value ($000) $6,057 Avg Close $68.45 Range $39.23 - $87.75

Q1 2025

Shares 73,415 Value ($000) $3,820 Avg Close $56.77 Range $49.07 - $66.80

Q4 2024

Shares 21,607 Value ($000) $1,189 Avg Close $58.97 Range $52.45 - $67.09

Q3 2024

Shares 53,818 Value ($000) $3,601 Avg Close $62.09 Range $53.90 - $68.92

Q2 2024

Shares 129,829 Value ($000) $7,199 Avg Close $56.03 Range $47.90 - $62.44

Q1 2024

Shares 136,089 Value ($000) $6,964 Avg Close $45.22 Range $38.04 - $51.95

Q4 2023

Shares 135,344 Value ($000) $6,154 Avg Close $41.52 Range $35.03 - $46.57

Q3 2023

Shares 135,869 Value ($000) $5,591 Avg Close $44.44 Range $41.04 - $47.92

Q2 2023

Shares 133,621 Value ($000) $5,910 Avg Close $38.25 Range $34.10 - $44.39

Q1 2023

Shares 108,322 Value ($000) $4,274 Avg Close $37.76 Range $29.37 - $43.32

Q4 2022

Shares 129,034 Value ($000) $3,853 Avg Close $29.27 Range $25.39 - $31.74

Q3 2022

Shares 25,842 Value ($000) $688 Avg Close $27.84 Range $20.52 - $33.31

Q2 2022

Shares 20,849 Value ($000) $473 Avg Close $26.35 Range $20.87 - $30.74

Q1 2022

Shares 18,336 Value ($000) $492 Avg Close $23.18 Range $16.02 - $28.45

Q4 2021

Shares 17,385 Value ($000) $277 Avg Close $16.05 Range $13.85 - $18.33

Q3 2021

Shares 16,969 Value ($000) $282 Avg Close $18.91 Range $15.75 - $22.33

Q2 2021

Shares 18,084 Value ($000) $377 Avg Close $22.93 Range $20.15 - $25.04

Q1 2021

Shares 16,938 Value ($000) $357 Avg Close $19.55 Range $15.97 - $22.87

Q4 2020

Shares 15,802 Value ($000) $265 Avg Close $12.70 Range $8.24 - $17.60

Q3 2020

Shares 15,206 Value ($000) $133 Avg Close $9.20 Range $8.04 - $11.06

Q2 2020

Shares 124,407 Value ($000) $1,268 Avg Close $8.67 Range $6.21 - $12.60

Q1 2020

Shares 117,383 Value ($000) $998 Avg Close $15.97 Range $4.95 - $20.91

Q4 2019

Shares 113,143 Value ($000) $2,338 Avg Close $21.68 Range $18.98 - $24.17

Q3 2019

Shares 112,727 Value ($000) $2,283 Avg Close $21.15 Range $17.03 - $25.66

Q2 2019

Shares 111,151 Value ($000) $2,801 Avg Close $24.37 Range $21.15 - $27.49

Q1 2019

Shares 111,305 Value ($000) $2,846 Avg Close $26.33 Range $21.00 - $29.50

Q4 2018

Shares 110,684 Value ($000) $2,410 Avg Close $25.93 Range $20.84 - $29.84

Q3 2018

Shares 104,251 Value ($000) $3,081 Avg Close $26.89 Range $24.31 - $30.18

Q2 2018

Shares 107,718 Value ($000) $2,706 Avg Close $27.05 Range $22.93 - $29.87

Q1 2018

Shares 105,279 Value ($000) $2,493 Avg Close $26.83 Range $22.70 - $30.25

Q4 2017

Shares 103,753 Value ($000) $2,505 Avg Close $23.80 Range $21.01 - $26.59

Q3 2017

Shares 87,972 Value ($000) $2,103 Avg Close $19.78 Range $16.51 - $24.00

Q2 2017

Shares 90,469 Value ($000) $1,539 Avg Close $16.82 Range $14.54 - $20.11

Q1 2017

Shares 88,798 Value ($000) $1,595 Avg Close $18.80 Range $15.61 - $23.69

Q4 2016

Shares 84,867 Value ($000) $1,352 Avg Close $16.62 Range $13.15 - $19.20

Q3 2016

Shares 86,032 Value ($000) $1,555 Avg Close $16.54 Range $12.22 - $18.59

Q2 2016

Shares 80,302 Value ($000) $1,024 Avg Close $14.18 Range $10.81 - $17.83

Q1 2016

Shares 76,874 Value ($000) $1,253 Avg Close $12.00 Range $6.97 - $18.17

Q4 2015

Shares 74,895 Value ($000) $843 Avg Close $13.45 Range $9.91 - $18.65

Q3 2015

Shares 72,445 Value ($000) $1,027 Avg Close $20.12 Range $13.34 - $30.02

Q2 2015

Shares 12,062 Value ($000) $364 Avg Close $31.90 Range $27.97 - $36.35

Q1 2015

Shares 11,550 Value ($000) $347 Avg Close $29.80 Range $25.96 - $33.60

Q4 2014

Shares 11,276 Value ($000) $392 Avg Close $31.49 Range $28.73 - $35.21

Q3 2014

Shares 11,465 Value ($000) $425 Avg Close $39.92 Range $34.97 - $43.90

Q2 2014

Shares 11,448 Value ($000) $516 Avg Close $38.68 Range $35.44 - $42.89

Q1 2014

Shares 11,010 Value ($000) $415 Avg Close $31.60 Range $27.91 - $36.14

Q4 2013

Shares 11,779 Value ($000) $420 Avg Close $30.74 Range $27.52 - $33.68

Q3 2013

Shares 10,575 Value ($000) $323 Avg Close $26.04 Range $23.74 - $30.56

Q2 2013

Shares 11,139 Value ($000) $293 Avg Close $26.04 Range $23.70 - $29.42

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	56,543	$6,489	$97.45	$79.29 - $117.48
Q3 2025	63,655	$5,178	$81.04	$70.42 - $96.20
Q2 2025	70,155	$6,057	$68.45	$39.23 - $87.75
Q1 2025	73,415	$3,820	$56.77	$49.07 - $66.80
Q4 2024	21,607	$1,189	$58.97	$52.45 - $67.09
Q3 2024	53,818	$3,601	$62.09	$53.90 - $68.92
Q2 2024	129,829	$7,199	$56.03	$47.90 - $62.44
Q1 2024	136,089	$6,964	$45.22	$38.04 - $51.95
Q4 2023	135,344	$6,154	$41.52	$35.03 - $46.57
Q3 2023	135,869	$5,591	$44.44	$41.04 - $47.92
Q2 2023	133,621	$5,910	$38.25	$34.10 - $44.39
Q1 2023	108,322	$4,274	$37.76	$29.37 - $43.32
Q4 2022	129,034	$3,853	$29.27	$25.39 - $31.74
Q3 2022	25,842	$688	$27.84	$20.52 - $33.31
Q2 2022	20,849	$473	$26.35	$20.87 - $30.74
Q1 2022	18,336	$492	$23.18	$16.02 - $28.45
Q4 2021	17,385	$277	$16.05	$13.85 - $18.33
Q3 2021	16,969	$282	$18.91	$15.75 - $22.33
Q2 2021	18,084	$377	$22.93	$20.15 - $25.04
Q1 2021	16,938	$357	$19.55	$15.97 - $22.87
Q4 2020	15,802	$265	$12.70	$8.24 - $17.60
Q3 2020	15,206	$133	$9.20	$8.04 - $11.06
Q2 2020	124,407	$1,268	$8.67	$6.21 - $12.60
Q1 2020	117,383	$998	$15.97	$4.95 - $20.91
Q4 2019	113,143	$2,338	$21.68	$18.98 - $24.17
Q3 2019	112,727	$2,283	$21.15	$17.03 - $25.66
Q2 2019	111,151	$2,801	$24.37	$21.15 - $27.49
Q1 2019	111,305	$2,846	$26.33	$21.00 - $29.50
Q4 2018	110,684	$2,410	$25.93	$20.84 - $29.84
Q3 2018	104,251	$3,081	$26.89	$24.31 - $30.18
Q2 2018	107,718	$2,706	$27.05	$22.93 - $29.87
Q1 2018	105,279	$2,493	$26.83	$22.70 - $30.25
Q4 2017	103,753	$2,505	$23.80	$21.01 - $26.59
Q3 2017	87,972	$2,103	$19.78	$16.51 - $24.00
Q2 2017	90,469	$1,539	$16.82	$14.54 - $20.11
Q1 2017	88,798	$1,595	$18.80	$15.61 - $23.69
Q4 2016	84,867	$1,352	$16.62	$13.15 - $19.20
Q3 2016	86,032	$1,555	$16.54	$12.22 - $18.59
Q2 2016	80,302	$1,024	$14.18	$10.81 - $17.83
Q1 2016	76,874	$1,253	$12.00	$6.97 - $18.17
Q4 2015	74,895	$843	$13.45	$9.91 - $18.65
Q3 2015	72,445	$1,027	$20.12	$13.34 - $30.02
Q2 2015	12,062	$364	$31.90	$27.97 - $36.35
Q1 2015	11,550	$347	$29.80	$25.96 - $33.60
Q4 2014	11,276	$392	$31.49	$28.73 - $35.21
Q3 2014	11,465	$425	$39.92	$34.97 - $43.90
Q2 2014	11,448	$516	$38.68	$35.44 - $42.89
Q1 2014	11,010	$415	$31.60	$27.91 - $36.14
Q4 2013	11,779	$420	$30.74	$27.52 - $33.68
Q3 2013	10,575	$323	$26.04	$23.74 - $30.56
Q2 2013	11,139	$293	$26.04	$23.70 - $29.42