STEEL DYNAMICS INC

Ticker: STLD CUSIP: 858119100 Class: COMMON STOCK

GATEWAY INVESTMENT ADVISERS LLC's Holding History (CIK: 0001114618)

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

Q4 2025

Shares 50,348 Value ($000) $8,531 Avg Close $158.36 Range $137.70 - $177.84

Q3 2025

Shares 50,365 Value ($000) $7,022 Avg Close $130.39 Range $119.11 - $140.98

Q2 2025

Shares 50,373 Value ($000) $6,448 Avg Close $126.36 Range $102.11 - $140.95

Q1 2025

Shares 50,368 Value ($000) $6,300 Avg Close $124.96 Range $109.33 - $137.65

Q4 2024

Shares 54,008 Value ($000) $6,161 Avg Close $130.47 Range $111.65 - $152.72

Q3 2024

Shares 56,034 Value ($000) $7,065 Avg Close $118.85 Range $102.31 - $134.27

Q2 2024

Shares 55,878 Value ($000) $7,236 Avg Close $130.12 Range $115.35 - $147.49

Q1 2024

Shares 55,324 Value ($000) $8,201 Avg Close $122.14 Range $106.53 - $144.95

Q4 2023

Shares 54,502 Value ($000) $6,437 Avg Close $107.90 Range $95.11 - $124.46

Q3 2023

Shares 53,089 Value ($000) $5,692 Avg Close $100.40 Range $92.11 - $107.71

Q2 2023

Shares 53,982 Value ($000) $5,880 Avg Close $97.72 Range $86.96 - $110.55

Q1 2023

Shares 54,011 Value ($000) $6,107 Avg Close $111.23 Range $90.76 - $130.54

Q4 2022

Shares 53,113 Value ($000) $5,189 Avg Close $91.75 Range $68.70 - $107.85

Q3 2022

Shares 52,503 Value ($000) $3,725 Avg Close $71.84 Range $59.25 - $84.09

Q2 2022

Shares 112,571 Value ($000) $7,447 Avg Close $75.64 Range $60.78 - $94.76

Q1 2022

Shares 112,609 Value ($000) $9,395 Avg Close $63.45 Range $47.52 - $84.34

Q4 2021

Shares 144,998 Value ($000) $9,000 Avg Close $58.59 Range $52.93 - $64.63

Q3 2021

Shares 144,619 Value ($000) $8,457 Avg Close $59.61 Range $51.19 - $69.35

Q2 2021

Shares 179,811 Value ($000) $10,717 Avg Close $54.47 Range $45.84 - $62.09

Q1 2021

Shares 180,364 Value ($000) $9,155 Avg Close $38.96 Range $31.19 - $48.49

Q4 2020

Shares 180,364 Value ($000) $6,650 Avg Close $31.85 Range $25.96 - $36.89

Q3 2020

Shares 180,428 Value ($000) $5,166 Avg Close $26.10 Range $21.83 - $29.60

Q2 2020

Shares 180,428 Value ($000) $4,707 Avg Close $22.53 Range $18.48 - $27.00

Q1 2020

Shares 250,001 Value ($000) $5,635 Avg Close $24.36 Range $13.32 - $30.61

Q4 2019

Shares 250,219 Value ($000) $8,517 Avg Close $28.20 Range $24.32 - $31.60

Q3 2019

Shares 289,044 Value ($000) $8,614 Avg Close $25.87 Range $22.50 - $28.88

Q2 2019

Shares 301,674 Value ($000) $9,111 Avg Close $26.59 Range $21.75 - $31.41

Q1 2019

Shares 330,978 Value ($000) $11,674 Avg Close $30.67 Range $25.17 - $33.96

Q4 2018

Shares 253,748 Value ($000) $7,623 Avg Close $32.42 Range $24.79 - $39.93

Q3 2018

Shares 214,702 Value ($000) $9,702 Avg Close $39.33 Range $35.70 - $42.45

Q2 2018

Shares 214,702 Value ($000) $9,866 Avg Close $40.25 Range $36.27 - $44.32

Q1 2018

Shares 214,903 Value ($000) $9,503 Avg Close $39.00 Range $34.83 - $42.94

Q4 2017

Shares 175,965 Value ($000) $7,589 Avg Close $32.46 Range $28.33 - $37.17

Q3 2017

Shares 226,018 Value ($000) $7,791 Avg Close $29.48 Range $27.05 - $32.51

Q2 2017

Shares 251,162 Value ($000) $8,994 Avg Close $28.97 Range $26.88 - $31.37

Q1 2017

Shares 251,257 Value ($000) $8,734 Avg Close $29.67 Range $27.09 - $32.02

Q4 2016

Shares 251,834 Value ($000) $8,960 Avg Close $26.10 Range $19.35 - $33.31

Q3 2016

Shares 492,058 Value ($000) $12,297 Avg Close $21.06 Range $18.79 - $23.10

Q2 2016

Shares 501,310 Value ($000) $12,282 Avg Close $20.03 Range $17.68 - $22.12

Q1 2016

Shares 665,964 Value ($000) $14,991 Avg Close $15.36 Range $12.48 - $18.79

Q4 2015

Shares 553,730 Value ($000) $9,895 Avg Close $14.45 Range $13.12 - $15.93

Q3 2015

Shares 419,070 Value ($000) $7,200 Avg Close $15.53 Range $13.35 - $17.42

Q2 2015

Shares 419,070 Value ($000) $8,681 Avg Close $17.16 Range $15.54 - $18.46

Q1 2015

Shares 499,711 Value ($000) $10,044 Avg Close $14.75 Range $13.06 - $16.57

Q4 2014

Shares 499,711 Value ($000) $9,864 Avg Close $16.97 Range $14.81 - $18.55

Q3 2014

Shares 520,706 Value ($000) $11,773 Avg Close $17.12 Range $13.89 - $19.97

Q2 2014

Shares 520,680 Value ($000) $9,346 Avg Close $13.98 Range $13.22 - $14.83

Q1 2014

Shares 520,358 Value ($000) $9,257 Avg Close $13.53 Range $12.21 - $15.09

Q4 2013

Shares 520,758 Value ($000) $10,176 Avg Close $14.08 Range $12.49 - $15.25

Q3 2013

Shares 521,581 Value ($000) $8,716 Avg Close $12.11 Range $11.42 - $13.41

Q2 2013

Shares 521,991 Value ($000) $7,783 Avg Close $11.35 Range $10.49 - $12.29

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	50,348	$8,531	$158.36	$137.70 - $177.84
Q3 2025	50,365	$7,022	$130.39	$119.11 - $140.98
Q2 2025	50,373	$6,448	$126.36	$102.11 - $140.95
Q1 2025	50,368	$6,300	$124.96	$109.33 - $137.65
Q4 2024	54,008	$6,161	$130.47	$111.65 - $152.72
Q3 2024	56,034	$7,065	$118.85	$102.31 - $134.27
Q2 2024	55,878	$7,236	$130.12	$115.35 - $147.49
Q1 2024	55,324	$8,201	$122.14	$106.53 - $144.95
Q4 2023	54,502	$6,437	$107.90	$95.11 - $124.46
Q3 2023	53,089	$5,692	$100.40	$92.11 - $107.71
Q2 2023	53,982	$5,880	$97.72	$86.96 - $110.55
Q1 2023	54,011	$6,107	$111.23	$90.76 - $130.54
Q4 2022	53,113	$5,189	$91.75	$68.70 - $107.85
Q3 2022	52,503	$3,725	$71.84	$59.25 - $84.09
Q2 2022	112,571	$7,447	$75.64	$60.78 - $94.76
Q1 2022	112,609	$9,395	$63.45	$47.52 - $84.34
Q4 2021	144,998	$9,000	$58.59	$52.93 - $64.63
Q3 2021	144,619	$8,457	$59.61	$51.19 - $69.35
Q2 2021	179,811	$10,717	$54.47	$45.84 - $62.09
Q1 2021	180,364	$9,155	$38.96	$31.19 - $48.49
Q4 2020	180,364	$6,650	$31.85	$25.96 - $36.89
Q3 2020	180,428	$5,166	$26.10	$21.83 - $29.60
Q2 2020	180,428	$4,707	$22.53	$18.48 - $27.00
Q1 2020	250,001	$5,635	$24.36	$13.32 - $30.61
Q4 2019	250,219	$8,517	$28.20	$24.32 - $31.60
Q3 2019	289,044	$8,614	$25.87	$22.50 - $28.88
Q2 2019	301,674	$9,111	$26.59	$21.75 - $31.41
Q1 2019	330,978	$11,674	$30.67	$25.17 - $33.96
Q4 2018	253,748	$7,623	$32.42	$24.79 - $39.93
Q3 2018	214,702	$9,702	$39.33	$35.70 - $42.45
Q2 2018	214,702	$9,866	$40.25	$36.27 - $44.32
Q1 2018	214,903	$9,503	$39.00	$34.83 - $42.94
Q4 2017	175,965	$7,589	$32.46	$28.33 - $37.17
Q3 2017	226,018	$7,791	$29.48	$27.05 - $32.51
Q2 2017	251,162	$8,994	$28.97	$26.88 - $31.37
Q1 2017	251,257	$8,734	$29.67	$27.09 - $32.02
Q4 2016	251,834	$8,960	$26.10	$19.35 - $33.31
Q3 2016	492,058	$12,297	$21.06	$18.79 - $23.10
Q2 2016	501,310	$12,282	$20.03	$17.68 - $22.12
Q1 2016	665,964	$14,991	$15.36	$12.48 - $18.79
Q4 2015	553,730	$9,895	$14.45	$13.12 - $15.93
Q3 2015	419,070	$7,200	$15.53	$13.35 - $17.42
Q2 2015	419,070	$8,681	$17.16	$15.54 - $18.46
Q1 2015	499,711	$10,044	$14.75	$13.06 - $16.57
Q4 2014	499,711	$9,864	$16.97	$14.81 - $18.55
Q3 2014	520,706	$11,773	$17.12	$13.89 - $19.97
Q2 2014	520,680	$9,346	$13.98	$13.22 - $14.83
Q1 2014	520,358	$9,257	$13.53	$12.21 - $15.09
Q4 2013	520,758	$10,176	$14.08	$12.49 - $15.25
Q3 2013	521,581	$8,716	$12.11	$11.42 - $13.41
Q2 2013	521,991	$7,783	$11.35	$10.49 - $12.29