DUCOMMUN INC DEL

Ticker: DCO CUSIP: 264147109 Class: COM

Parallax Volatility Advisers, L.P.'s Holding History (CIK: 0001521001)

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

Q4 2017

Shares 1,638 Value ($000) $47 Avg Close $29.90 Range $25.06 - $35.55

Q1 2014

Shares 378 Value ($000) $9 Avg Close $27.03 Range $22.80 - $31.35

Q3 2013

Shares 433 Value ($000) $12 Avg Close $25.51 Range $20.40 - $29.37

Q2 2013

Shares 258 Value ($000) $5 Avg Close $20.64 Range $17.79 - $26.71

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2017	1,638	$47	$29.90	$25.06 - $35.55
Q1 2014	378	$9	$27.03	$22.80 - $31.35
Q3 2013	433	$12	$25.51	$20.40 - $29.37
Q2 2013	258	$5	$20.64	$17.79 - $26.71