MDU RES GROUP INC

Ticker: MDU CUSIP: 552690109 Class: COM

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

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

Q2 2019
Shares 25 Value ($000) $1 Avg Close $7.99 Range $7.59 - $8.30
Q4 2018
Shares 50 Value ($000) $1 Avg Close $7.88 Range $7.03 - $8.27
Q3 2018
Shares 110 Value ($000) $3 Avg Close $8.58 Range $7.77 - $9.02
Q3 2017
Shares 6 Value ($000) $0 Avg Close $7.77 Range $7.44 - $8.20