ALLEGHENY TECHNOLOGIES INC

Ticker: ATI CUSIP: 01741R102 Class: EQTY

D. E. Shaw & Co., Inc.'s Holding History (CIK: 0001009207)

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

Q4 2025

Shares 2,022,621 Value ($000) $232,116 Avg Close $97.45 Range $79.29 - $117.48

Q3 2025

Shares 3,027,102 Value ($000) $246,224 Avg Close $81.04 Range $70.42 - $96.20

Q2 2025

Shares 3,513,948 Value ($000) $303,394 Avg Close $68.45 Range $39.23 - $87.75

Q1 2025

Shares 1,639,294 Value ($000) $85,292 Avg Close $56.77 Range $49.07 - $66.80

Q4 2024

Shares 1,463,613 Value ($000) $80,557 Avg Close $58.97 Range $52.45 - $67.09

Q3 2024

Shares 1,282,341 Value ($000) $85,801 Avg Close $62.09 Range $53.90 - $68.92

Q2 2024

Shares 1,115,560 Value ($000) $61,858 Avg Close $56.03 Range $47.90 - $62.44

Q1 2024

Shares 581,548 Value ($000) $29,758 Avg Close $45.22 Range $38.04 - $51.95

Q4 2023

Shares 1,233,357 Value ($000) $56,081 Avg Close $41.52 Range $35.03 - $46.57

Q3 2023

Shares 1,232,337 Value ($000) $50,711 Avg Close $44.44 Range $41.04 - $47.92

Q2 2023

Shares 2,212,956 Value ($000) $97,879 Avg Close $38.25 Range $34.10 - $44.39

Q1 2023

Shares 2,711,158 Value ($000) $106,982 Avg Close $37.76 Range $29.37 - $43.32

Q4 2022

Shares 3,305,890 Value ($000) $98,714 Avg Close $29.27 Range $25.39 - $31.74

Q3 2022

Shares 3,397,097 Value ($000) $90,397 Avg Close $27.84 Range $20.52 - $33.31

Q2 2022

Shares 3,458,248 Value ($000) $78,537 Avg Close $26.35 Range $20.87 - $30.74

Q1 2022

Shares 3,619,393 Value ($000) $97,145 Avg Close $23.18 Range $16.02 - $28.45

Q4 2021

Shares 3,631,162 Value ($000) $57,844 Avg Close $16.05 Range $13.85 - $18.33

Q3 2021

Shares 4,039,159 Value ($000) $67,171 Avg Close $18.91 Range $15.75 - $22.33

Q2 2021

Shares 3,798,889 Value ($000) $79,207 Avg Close $22.93 Range $20.15 - $25.04

Q1 2021

Shares 3,825,819 Value ($000) $80,572 Avg Close $19.55 Range $15.97 - $22.87

Q4 2020

Shares 4,055,416 Value ($000) $68,009 Avg Close $12.70 Range $8.24 - $17.60

Q3 2020

Shares 4,754,524 Value ($000) $41,459 Avg Close $9.20 Range $8.04 - $11.06

Q2 2020

Shares 3,887,285 Value ($000) $39,612 Avg Close $8.67 Range $6.21 - $12.60

Q1 2020

Shares 1,801,095 Value ($000) $15,309 Avg Close $15.97 Range $4.95 - $20.91

Q4 2019

Shares 1,230,771 Value ($000) $25,428 Avg Close $21.68 Range $18.98 - $24.17

Q3 2019

Shares 1,280,392 Value ($000) $25,928 Avg Close $21.15 Range $17.03 - $25.66

Q2 2019

Shares 423,067 Value ($000) $10,661 Avg Close $24.37 Range $21.15 - $27.49

Q1 2019

Shares 463,554 Value ($000) $11,853 Avg Close $26.33 Range $21.00 - $29.50

Q4 2018

Shares 824,561 Value ($000) $17,950 Avg Close $25.93 Range $20.84 - $29.84

Q3 2018

Shares 800,320 Value ($000) $23,649 Avg Close $26.89 Range $24.31 - $30.18

Q2 2018

Shares 1,118,379 Value ($000) $28,094 Avg Close $27.05 Range $22.93 - $29.87

Q1 2018

Shares 1,848,739 Value ($000) $43,779 Avg Close $26.83 Range $22.70 - $30.25

Q4 2017

Shares 961,310 Value ($000) $23,206 Avg Close $23.80 Range $21.01 - $26.59

Q3 2017

Shares 298,259 Value ($000) $7,129 Avg Close $19.78 Range $16.51 - $24.00

Q2 2017

Shares 423,355 Value ($000) $7,201 Avg Close $16.82 Range $14.54 - $20.11

Q1 2017

Shares 1,186,697 Value ($000) $21,313 Avg Close $18.80 Range $15.61 - $23.69

Q4 2016

Shares 803,996 Value ($000) $12,807 Avg Close $16.62 Range $13.15 - $19.20

Q3 2016

Shares 966,420 Value ($000) $17,463 Avg Close $16.54 Range $12.22 - $18.59

Q2 2016

Shares 1,473,856 Value ($000) $18,792 Avg Close $14.18 Range $10.81 - $17.83

Q1 2016

Shares 1,822,086 Value ($000) $29,700 Avg Close $12.00 Range $6.97 - $18.17

Q4 2015

Shares 2,503,716 Value ($000) $28,167 Avg Close $13.45 Range $9.91 - $18.65

Q3 2015

Shares 1,027,744 Value ($000) $14,574 Avg Close $20.12 Range $13.34 - $30.02

Q2 2015

Shares 49,387 Value ($000) $1,491 Avg Close $31.90 Range $27.97 - $36.35

Q1 2015

Shares 10,549 Value ($000) $317 Avg Close $29.80 Range $25.96 - $33.60

Q4 2014

Shares 143,462 Value ($000) $4,988 Avg Close $31.49 Range $28.73 - $35.21

Q3 2014

Shares 151,241 Value ($000) $5,611 Avg Close $39.92 Range $34.97 - $43.90

Q2 2014

Shares 10,207 Value ($000) $460 Avg Close $38.68 Range $35.44 - $42.89

Q4 2013

Shares 42,712 Value ($000) $1,522 Avg Close $30.74 Range $27.52 - $33.68

Q3 2013

Shares 33,496 Value ($000) $1,022 Avg Close $26.04 Range $23.74 - $30.56

Q2 2013

Shares 203,731 Value ($000) $5,360 Avg Close $26.04 Range $23.70 - $29.42

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	2,022,621	$232,116	$97.45	$79.29 - $117.48
Q3 2025	3,027,102	$246,224	$81.04	$70.42 - $96.20
Q2 2025	3,513,948	$303,394	$68.45	$39.23 - $87.75
Q1 2025	1,639,294	$85,292	$56.77	$49.07 - $66.80
Q4 2024	1,463,613	$80,557	$58.97	$52.45 - $67.09
Q3 2024	1,282,341	$85,801	$62.09	$53.90 - $68.92
Q2 2024	1,115,560	$61,858	$56.03	$47.90 - $62.44
Q1 2024	581,548	$29,758	$45.22	$38.04 - $51.95
Q4 2023	1,233,357	$56,081	$41.52	$35.03 - $46.57
Q3 2023	1,232,337	$50,711	$44.44	$41.04 - $47.92
Q2 2023	2,212,956	$97,879	$38.25	$34.10 - $44.39
Q1 2023	2,711,158	$106,982	$37.76	$29.37 - $43.32
Q4 2022	3,305,890	$98,714	$29.27	$25.39 - $31.74
Q3 2022	3,397,097	$90,397	$27.84	$20.52 - $33.31
Q2 2022	3,458,248	$78,537	$26.35	$20.87 - $30.74
Q1 2022	3,619,393	$97,145	$23.18	$16.02 - $28.45
Q4 2021	3,631,162	$57,844	$16.05	$13.85 - $18.33
Q3 2021	4,039,159	$67,171	$18.91	$15.75 - $22.33
Q2 2021	3,798,889	$79,207	$22.93	$20.15 - $25.04
Q1 2021	3,825,819	$80,572	$19.55	$15.97 - $22.87
Q4 2020	4,055,416	$68,009	$12.70	$8.24 - $17.60
Q3 2020	4,754,524	$41,459	$9.20	$8.04 - $11.06
Q2 2020	3,887,285	$39,612	$8.67	$6.21 - $12.60
Q1 2020	1,801,095	$15,309	$15.97	$4.95 - $20.91
Q4 2019	1,230,771	$25,428	$21.68	$18.98 - $24.17
Q3 2019	1,280,392	$25,928	$21.15	$17.03 - $25.66
Q2 2019	423,067	$10,661	$24.37	$21.15 - $27.49
Q1 2019	463,554	$11,853	$26.33	$21.00 - $29.50
Q4 2018	824,561	$17,950	$25.93	$20.84 - $29.84
Q3 2018	800,320	$23,649	$26.89	$24.31 - $30.18
Q2 2018	1,118,379	$28,094	$27.05	$22.93 - $29.87
Q1 2018	1,848,739	$43,779	$26.83	$22.70 - $30.25
Q4 2017	961,310	$23,206	$23.80	$21.01 - $26.59
Q3 2017	298,259	$7,129	$19.78	$16.51 - $24.00
Q2 2017	423,355	$7,201	$16.82	$14.54 - $20.11
Q1 2017	1,186,697	$21,313	$18.80	$15.61 - $23.69
Q4 2016	803,996	$12,807	$16.62	$13.15 - $19.20
Q3 2016	966,420	$17,463	$16.54	$12.22 - $18.59
Q2 2016	1,473,856	$18,792	$14.18	$10.81 - $17.83
Q1 2016	1,822,086	$29,700	$12.00	$6.97 - $18.17
Q4 2015	2,503,716	$28,167	$13.45	$9.91 - $18.65
Q3 2015	1,027,744	$14,574	$20.12	$13.34 - $30.02
Q2 2015	49,387	$1,491	$31.90	$27.97 - $36.35
Q1 2015	10,549	$317	$29.80	$25.96 - $33.60
Q4 2014	143,462	$4,988	$31.49	$28.73 - $35.21
Q3 2014	151,241	$5,611	$39.92	$34.97 - $43.90
Q2 2014	10,207	$460	$38.68	$35.44 - $42.89
Q4 2013	42,712	$1,522	$30.74	$27.52 - $33.68
Q3 2013	33,496	$1,022	$26.04	$23.74 - $30.56
Q2 2013	203,731	$5,360	$26.04	$23.70 - $29.42