ULTRA CLEAN HLDGS INC

Ticker: UCTT CUSIP: 90385V107 Class: Common Stock

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

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

Q4 2025
Shares 453,630 Value ($000) $11,490 Avg Close $26.60 Range $21.49 - $31.11
Q3 2025
Shares 321,969 Value ($000) $8,774 Avg Close $24.59 Range $21.28 - $29.72
Q1 2022
Shares 272,692 Value ($000) $11,559 Avg Close $47.86 Range $37.72 - $60.49
Q4 2021
Shares 1,226,443 Value ($000) $70,349 Avg Close $52.01 Range $40.97 - $60.84
Q3 2021
Shares 528,669 Value ($000) $22,521 Avg Close $47.15 Range $39.00 - $56.24
Q2 2021
Shares 1,315,120 Value ($000) $70,648 Avg Close $53.53 Range $44.18 - $65.33
Q1 2021
Shares 1,286,984 Value ($000) $74,697 Avg Close $46.05 Range $31.59 - $59.42
Q4 2020
Shares 866,247 Value ($000) $26,984 Avg Close $27.90 Range $21.08 - $37.02
Q3 2020
Shares 1,133,641 Value ($000) $24,328 Avg Close $24.28 Range $19.08 - $31.10
Q2 2020
Shares 853,491 Value ($000) $19,315 Avg Close $19.01 Range $12.37 - $24.86
Q1 2020
Shares 419,590 Value ($000) $5,790 Avg Close $21.23 Range $11.79 - $30.00
Q4 2019
Shares 859,603 Value ($000) $20,175 Avg Close $20.22 Range $13.94 - $24.24
Q2 2017
Shares 50,526 Value ($000) $947 Avg Close $20.12 Range $14.93 - $26.21
Q1 2017
Shares 206,176 Value ($000) $3,478 Avg Close $13.27 Range $9.42 - $16.99
Q4 2016
Shares 122,576 Value ($000) $1,189 Avg Close $9.08 Range $7.06 - $10.65