MEDNAX INC

Ticker: MD CUSIP: 58502B106 Class: EQTY

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

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

Q2 2019

Shares 11 Value ($000) $0 Avg Close $26.86 Range $23.05 - $29.97

Q4 2018

Shares 153 Value ($000) $5 Avg Close $40.20 Range $31.68 - $47.32

Q3 2017

Shares 38 Value ($000) $2 Avg Close $47.53 Range $40.78 - $60.80

Q1 2017

Shares 1,186 Value ($000) $82 Avg Close $69.46 Range $64.05 - $72.13

Q1 2016

Shares 3,550 Value ($000) $229 Avg Close $66.34 Range $61.40 - $71.26

Q4 2015

Shares 587 Value ($000) $42 Avg Close $73.96 Range $68.66 - $83.20

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2019	11	$0	$26.86	$23.05 - $29.97
Q4 2018	153	$5	$40.20	$31.68 - $47.32
Q3 2017	38	$2	$47.53	$40.78 - $60.80
Q1 2017	1,186	$82	$69.46	$64.05 - $72.13
Q1 2016	3,550	$229	$66.34	$61.40 - $71.26
Q4 2015	587	$42	$73.96	$68.66 - $83.20