NORTHERN TR CORP

Ticker: NTRS CUSIP: 665859104 Class: COM

Certified Advisory Corp's Holding History (CIK: 0001731732)

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

Q1 2019

Shares 600 Value ($000) $54 Avg Close $72.96 Range $66.04 - $78.80

Q4 2018

Shares 600 Value ($000) $50 Avg Close $75.32 Range $61.37 - $86.09

Q3 2018

Shares 600 Value ($000) $61 Avg Close $85.59 Range $81.23 - $92.33

Q2 2018

Shares 600 Value ($000) $62 Avg Close $84.33 Range $79.47 - $87.26

Q1 2018

Shares 600 Value ($000) $61 Avg Close $82.97 Range $74.79 - $88.15

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2019	600	$54	$72.96	$66.04 - $78.80
Q4 2018	600	$50	$75.32	$61.37 - $86.09
Q3 2018	600	$61	$85.59	$81.23 - $92.33
Q2 2018	600	$62	$84.33	$79.47 - $87.26
Q1 2018	600	$61	$82.97	$74.79 - $88.15