STEEL DYNAMICS INC

Ticker: STLD CUSIP: 858119100 Class: COMMON STOCK

GROUP ONE TRADING, L.P.'s Holding History (CIK: 0000932540)

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

Q4 2025

Shares 14,179 Value ($000) $2,403 Avg Close $158.36 Range $137.70 - $177.84

Q3 2022

Shares 40,132 Value ($000) $2,847 Avg Close $71.84 Range $59.25 - $84.09

Q1 2022

Shares 11,318 Value ($000) $944 Avg Close $63.45 Range $47.52 - $84.34

Q4 2021

Shares 79,043 Value ($000) $4,906 Avg Close $58.59 Range $52.93 - $64.63

Q3 2021

Shares 68,772 Value ($000) $4,022 Avg Close $59.61 Range $51.19 - $69.35

Q2 2021

Shares 41,791 Value ($000) $2,491 Avg Close $54.47 Range $45.84 - $62.09

Q1 2021

Shares 31,763 Value ($000) $1,612 Avg Close $38.96 Range $31.19 - $48.49

Q4 2020

Shares 11,756 Value ($000) $433 Avg Close $31.85 Range $25.96 - $36.89

Q3 2020

Shares 15,819 Value ($000) $453 Avg Close $26.10 Range $21.83 - $29.60

Q2 2020

Shares 25,239 Value ($000) $658 Avg Close $22.53 Range $18.48 - $27.00

Q1 2020

Shares 24,722 Value ($000) $557 Avg Close $24.36 Range $13.32 - $30.61

Q4 2019

Shares 54,657 Value ($000) $1,861 Avg Close $28.20 Range $24.32 - $31.60

Q3 2019

Shares 4,773 Value ($000) $142 Avg Close $25.87 Range $22.50 - $28.88

Q2 2019

Shares 4,604 Value ($000) $139 Avg Close $26.59 Range $21.75 - $31.41

Q1 2019

Shares 2,353 Value ($000) $83 Avg Close $30.67 Range $25.17 - $33.96

Q4 2018

Shares 11,756 Value ($000) $353 Avg Close $32.42 Range $24.79 - $39.93

Q4 2015

Shares 19,833 Value ($000) $354 Avg Close $14.45 Range $13.12 - $15.93

Q3 2015

Shares 15,920 Value ($000) $274 Avg Close $15.53 Range $13.35 - $17.42

Q2 2015

Shares 8,966 Value ($000) $186 Avg Close $17.16 Range $15.54 - $18.46

Q1 2015

Shares 16,112 Value ($000) $324 Avg Close $14.75 Range $13.06 - $16.57

Q4 2014

Shares 26,937 Value ($000) $532 Avg Close $16.97 Range $14.81 - $18.55

Q3 2014

Shares 2,067 Value ($000) $47 Avg Close $17.12 Range $13.89 - $19.97

Q4 2013

Shares 3,251 Value ($000) $64 Avg Close $14.08 Range $12.49 - $15.25

Q3 2013

Shares 14,476 Value ($000) $242 Avg Close $12.11 Range $11.42 - $13.41

Q2 2013

Shares 8,959 Value ($000) $134 Avg Close $11.35 Range $10.49 - $12.29

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	14,179	$2,403	$158.36	$137.70 - $177.84
Q3 2022	40,132	$2,847	$71.84	$59.25 - $84.09
Q1 2022	11,318	$944	$63.45	$47.52 - $84.34
Q4 2021	79,043	$4,906	$58.59	$52.93 - $64.63
Q3 2021	68,772	$4,022	$59.61	$51.19 - $69.35
Q2 2021	41,791	$2,491	$54.47	$45.84 - $62.09
Q1 2021	31,763	$1,612	$38.96	$31.19 - $48.49
Q4 2020	11,756	$433	$31.85	$25.96 - $36.89
Q3 2020	15,819	$453	$26.10	$21.83 - $29.60
Q2 2020	25,239	$658	$22.53	$18.48 - $27.00
Q1 2020	24,722	$557	$24.36	$13.32 - $30.61
Q4 2019	54,657	$1,861	$28.20	$24.32 - $31.60
Q3 2019	4,773	$142	$25.87	$22.50 - $28.88
Q2 2019	4,604	$139	$26.59	$21.75 - $31.41
Q1 2019	2,353	$83	$30.67	$25.17 - $33.96
Q4 2018	11,756	$353	$32.42	$24.79 - $39.93
Q4 2015	19,833	$354	$14.45	$13.12 - $15.93
Q3 2015	15,920	$274	$15.53	$13.35 - $17.42
Q2 2015	8,966	$186	$17.16	$15.54 - $18.46
Q1 2015	16,112	$324	$14.75	$13.06 - $16.57
Q4 2014	26,937	$532	$16.97	$14.81 - $18.55
Q3 2014	2,067	$47	$17.12	$13.89 - $19.97
Q4 2013	3,251	$64	$14.08	$12.49 - $15.25
Q3 2013	14,476	$242	$12.11	$11.42 - $13.41
Q2 2013	8,959	$134	$11.35	$10.49 - $12.29