DOUGLAS DYNAMICS INC

Ticker: PLOW CUSIP: 25960R105 Class: Common Stock

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

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

Q4 2017

Shares 3,360 Value ($000) $127 Avg Close $39.93 Range $36.45 - $42.60

Q1 2016

Shares 8,948 Value ($000) $205 Avg Close $20.10 Range $16.89 - $23.38

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2017	3,360	$127	$39.93	$36.45 - $42.60
Q1 2016	8,948	$205	$20.10	$16.89 - $23.38