ATKORE INC

Ticker: ATKR CUSIP: 047649108 Class: Common Stock

DRIEHAUS CAPITAL MANAGEMENT LLC's Holding History (CIK: 0000938206)

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

Q3 2023

Shares 130,232 Value ($000) $19,429 Avg Close $145.61 Range $132.06 - $158.92

Q2 2023

Shares 94,375 Value ($000) $14,717 Avg Close $126.47 Range $112.03 - $151.87

Q1 2023

Shares 124,414 Value ($000) $17,478 Avg Close $130.69 Range $108.94 - $149.38

Q2 2022

Shares 156,348 Value ($000) $12,978 Avg Close $95.85 Range $77.21 - $119.16

Q1 2022

Shares 277,732 Value ($000) $27,340 Avg Close $100.07 Range $88.70 - $115.71

Q4 2021

Shares 282,137 Value ($000) $31,371 Avg Close $98.02 Range $80.56 - $114.29

Q3 2021

Shares 203,097 Value ($000) $17,653 Avg Close $80.31 Range $63.47 - $98.86

Q3 2018

Shares 322,551 Value ($000) $8,557 Avg Close $24.09 Range $19.72 - $27.65

Q1 2017

Shares 39,613 Value ($000) $1,041 Avg Close $24.84 Range $22.15 - $26.33

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2023	130,232	$19,429	$145.61	$132.06 - $158.92
Q2 2023	94,375	$14,717	$126.47	$112.03 - $151.87
Q1 2023	124,414	$17,478	$130.69	$108.94 - $149.38
Q2 2022	156,348	$12,978	$95.85	$77.21 - $119.16
Q1 2022	277,732	$27,340	$100.07	$88.70 - $115.71
Q4 2021	282,137	$31,371	$98.02	$80.56 - $114.29
Q3 2021	203,097	$17,653	$80.31	$63.47 - $98.86
Q3 2018	322,551	$8,557	$24.09	$19.72 - $27.65
Q1 2017	39,613	$1,041	$24.84	$22.15 - $26.33