AVISTA CORP

Ticker: AVA CUSIP: 05379B107 Class: Common Stock

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

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

Q4 2018

Shares 1,280 Value ($000) $54 Avg Close $36.19 Range $30.77 - $38.41

Q2 2018

Shares 10,600 Value ($000) $558 Avg Close $37.64 Range $36.23 - $38.27

Q1 2018

Shares 1,013 Value ($000) $52 Avg Close $36.12 Range $34.13 - $37.40

Q4 2017

Shares 9,786 Value ($000) $504 Avg Close $36.82 Range $36.30 - $37.16

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2018	1,280	$54	$36.19	$30.77 - $38.41
Q2 2018	10,600	$558	$37.64	$36.23 - $38.27
Q1 2018	1,013	$52	$36.12	$34.13 - $37.40
Q4 2017	9,786	$504	$36.82	$36.30 - $37.16