QUEST DIAGNOSTICS INC

Ticker: DGX CUSIP: 74834L100 Class: COMMON STOCK

GATEWAY INVESTMENT ADVISERS LLC's Holding History (CIK: 0001114618)

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

Q4 2019

Shares 89,577 Value ($000) $9,566 Avg Close $92.43 Range $88.27 - $96.58

Q3 2019

Shares 93,284 Value ($000) $9,984 Avg Close $90.53 Range $85.50 - $95.23

Q2 2019

Shares 114,421 Value ($000) $11,649 Avg Close $84.30 Range $73.99 - $89.95

Q1 2019

Shares 114,713 Value ($000) $10,315 Avg Close $75.54 Range $69.30 - $79.02

Q4 2018

Shares 115,083 Value ($000) $9,583 Avg Close $81.26 Range $68.45 - $93.85

Q3 2018

Shares 115,083 Value ($000) $12,419 Avg Close $94.62 Range $90.13 - $99.79

Q2 2018

Shares 115,314 Value ($000) $12,678 Avg Close $89.48 Range $82.55 - $100.07

Q1 2018

Shares 116,043 Value ($000) $11,639 Avg Close $87.50 Range $81.42 - $92.99

Q4 2017

Shares 141,397 Value ($000) $13,926 Avg Close $80.65 Range $76.65 - $87.31

Q3 2017

Shares 146,245 Value ($000) $13,694 Avg Close $89.87 Range $77.62 - $95.26

Q2 2017

Shares 154,703 Value ($000) $17,197 Avg Close $89.16 Range $81.72 - $94.33

Q1 2017

Shares 145,721 Value ($000) $14,308 Avg Close $80.00 Range $75.65 - $83.94

Q4 2016

Shares 139,405 Value ($000) $12,811 Avg Close $71.99 Range $66.09 - $78.16

Q3 2016

Shares 166,934 Value ($000) $14,128 Avg Close $69.82 Range $66.73 - $72.20

Q2 2016

Shares 218,380 Value ($000) $17,778 Avg Close $62.99 Range $58.34 - $67.34

Q1 2016

Shares 235,024 Value ($000) $16,792 Avg Close $55.15 Range $49.08 - $59.76

Q4 2015

Shares 238,741 Value ($000) $16,984 Avg Close $54.99 Range $49.21 - $59.25

Q3 2015

Shares 183,112 Value ($000) $11,256 Avg Close $56.82 Range $48.84 - $61.18

Q2 2015

Shares 184,315 Value ($000) $13,367 Avg Close $59.70 Range $56.18 - $71.98

Q1 2015

Shares 184,541 Value ($000) $14,182 Avg Close $57.60 Range $52.93 - $63.03

Q4 2014

Shares 184,701 Value ($000) $12,386 Avg Close $50.52 Range $45.06 - $54.86

Q3 2014

Shares 128,687 Value ($000) $7,809 Avg Close $49.06 Range $46.54 - $51.28

Q2 2014

Shares 95,168 Value ($000) $5,585 Avg Close $46.37 Range $43.49 - $49.44

Q1 2014

Shares 93,038 Value ($000) $5,389 Avg Close $42.22 Range $39.75 - $47.66

Q4 2013

Shares 16,066 Value ($000) $860 Avg Close $46.46 Range $41.12 - $50.21

Q3 2013

Shares 17,416 Value ($000) $1,076 Avg Close $46.67 Range $44.29 - $48.97

Q2 2013

Shares 16,252 Value ($000) $985 Avg Close $46.22 Range $42.87 - $49.18

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2019	89,577	$9,566	$92.43	$88.27 - $96.58
Q3 2019	93,284	$9,984	$90.53	$85.50 - $95.23
Q2 2019	114,421	$11,649	$84.30	$73.99 - $89.95
Q1 2019	114,713	$10,315	$75.54	$69.30 - $79.02
Q4 2018	115,083	$9,583	$81.26	$68.45 - $93.85
Q3 2018	115,083	$12,419	$94.62	$90.13 - $99.79
Q2 2018	115,314	$12,678	$89.48	$82.55 - $100.07
Q1 2018	116,043	$11,639	$87.50	$81.42 - $92.99
Q4 2017	141,397	$13,926	$80.65	$76.65 - $87.31
Q3 2017	146,245	$13,694	$89.87	$77.62 - $95.26
Q2 2017	154,703	$17,197	$89.16	$81.72 - $94.33
Q1 2017	145,721	$14,308	$80.00	$75.65 - $83.94
Q4 2016	139,405	$12,811	$71.99	$66.09 - $78.16
Q3 2016	166,934	$14,128	$69.82	$66.73 - $72.20
Q2 2016	218,380	$17,778	$62.99	$58.34 - $67.34
Q1 2016	235,024	$16,792	$55.15	$49.08 - $59.76
Q4 2015	238,741	$16,984	$54.99	$49.21 - $59.25
Q3 2015	183,112	$11,256	$56.82	$48.84 - $61.18
Q2 2015	184,315	$13,367	$59.70	$56.18 - $71.98
Q1 2015	184,541	$14,182	$57.60	$52.93 - $63.03
Q4 2014	184,701	$12,386	$50.52	$45.06 - $54.86
Q3 2014	128,687	$7,809	$49.06	$46.54 - $51.28
Q2 2014	95,168	$5,585	$46.37	$43.49 - $49.44
Q1 2014	93,038	$5,389	$42.22	$39.75 - $47.66
Q4 2013	16,066	$860	$46.46	$41.12 - $50.21
Q3 2013	17,416	$1,076	$46.67	$44.29 - $48.97
Q2 2013	16,252	$985	$46.22	$42.87 - $49.18