QUEST DIAGNOSTICS INC

Ticker: DGX CUSIP: 74834L100 Class: COMMON STOCK

CITADEL ADVISORS LLC's Holding History (CIK: 0001423053)

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

Q4 2025

Shares 425,236 Value ($000) $73,791 Avg Close $182.07 Range $173.39 - $197.55

Q3 2025

Shares 130,614 Value ($000) $24,892 Avg Close $176.64 Range $163.92 - $190.64

Q2 2025

Shares 28,095 Value ($000) $5,047 Avg Close $172.09 Range $155.80 - $180.75

Q1 2025

Shares 136,043 Value ($000) $23,018 Avg Close $161.93 Range $146.66 - $176.41

Q3 2024

Shares 748,133 Value ($000) $116,148 Avg Close $145.81 Range $132.40 - $155.63

Q2 2024

Shares 1,167,147 Value ($000) $159,759 Avg Close $132.98 Range $121.83 - $141.45

Q1 2024

Shares 148,861 Value ($000) $19,815 Avg Close $125.21 Range $118.84 - $138.00

Q4 2023

Shares 201,424 Value ($000) $27,772 Avg Close $126.28 Range $114.23 - $136.42

Q3 2023

Shares 74,649 Value ($000) $9,097 Avg Close $127.23 Range $116.28 - $139.06

Q2 2023

Shares 127,563 Value ($000) $17,930 Avg Close $130.98 Range $123.12 - $141.24

Q1 2023

Shares 175,513 Value ($000) $24,832 Avg Close $135.20 Range $123.25 - $148.14

Q4 2022

Shares 22,420 Value ($000) $3,507 Avg Close $135.28 Range $114.90 - $149.06

Q3 2022

Shares 111,741 Value ($000) $13,709 Avg Close $123.30 Range $112.74 - $133.75

Q2 2022

Shares 80,832 Value ($000) $10,749 Avg Close $126.95 Range $116.79 - $135.49

Q1 2022

Shares 3,083 Value ($000) $422 Avg Close $129.14 Range $116.62 - $159.25

Q4 2021

Shares 92,569 Value ($000) $16,016 Avg Close $140.46 Range $128.33 - $160.79

Q3 2021

Shares 125,243 Value ($000) $18,200 Avg Close $134.48 Range $120.64 - $147.59

Q2 2021

Shares 78,449 Value ($000) $10,352 Avg Close $119.77 Range $115.00 - $130.65

Q1 2021

Shares 51,381 Value ($000) $6,594 Avg Close $112.12 Range $103.22 - $122.67

Q4 2020

Shares 208,925 Value ($000) $24,898 Avg Close $110.49 Range $98.77 - $118.60

Q3 2020

Shares 57,666 Value ($000) $6,602 Avg Close $106.55 Range $93.90 - $118.90

Q2 2020

Shares 1,226,473 Value ($000) $139,769 Avg Close $95.20 Range $65.05 - $112.22

Q1 2020

Shares 24,698 Value ($000) $1,983 Avg Close $92.18 Range $65.22 - $105.64

Q4 2019

Shares 32,094 Value ($000) $3,427 Avg Close $92.43 Range $88.27 - $96.58

Q3 2019

Shares 597,038 Value ($000) $63,901 Avg Close $90.53 Range $85.50 - $95.23

Q2 2019

Shares 114,368 Value ($000) $11,643 Avg Close $84.30 Range $73.99 - $89.95

Q1 2019

Shares 8,566 Value ($000) $771 Avg Close $75.54 Range $69.30 - $79.02

Q4 2018

Shares 2,702 Value ($000) $225 Avg Close $81.26 Range $68.45 - $93.85

Q3 2018

Shares 502,546 Value ($000) $54,230 Avg Close $94.62 Range $90.13 - $99.79

Q2 2018

Shares 1,365,091 Value ($000) $150,078 Avg Close $89.48 Range $82.55 - $100.07

Q1 2018

Shares 529,670 Value ($000) $53,126 Avg Close $87.50 Range $81.42 - $92.99

Q4 2017

Shares 255,771 Value ($000) $25,191 Avg Close $80.65 Range $76.65 - $87.31

Q3 2017

Shares 317,199 Value ($000) $29,703 Avg Close $89.87 Range $77.62 - $95.26

Q2 2017

Shares 18,106 Value ($000) $2,013 Avg Close $89.16 Range $81.72 - $94.33

Q3 2016

Shares 51,842 Value ($000) $4,387 Avg Close $69.82 Range $66.73 - $72.20

Q2 2016

Shares 332,851 Value ($000) $27,097 Avg Close $62.99 Range $58.34 - $67.34

Q1 2016

Shares 402,233 Value ($000) $28,740 Avg Close $55.15 Range $49.08 - $59.76

Q4 2015

Shares 539,986 Value ($000) $38,415 Avg Close $54.99 Range $49.21 - $59.25

Q3 2015

Shares 403,195 Value ($000) $24,785 Avg Close $56.82 Range $48.84 - $61.18

Q2 2015

Shares 286,684 Value ($000) $20,791 Avg Close $59.70 Range $56.18 - $71.98

Q1 2015

Shares 246,349 Value ($000) $18,931 Avg Close $57.60 Range $52.93 - $63.03

Q4 2014

Shares 2,467,017 Value ($000) $165,438 Avg Close $50.52 Range $45.06 - $54.86

Q3 2014

Shares 112,053 Value ($000) $6,800 Avg Close $49.06 Range $46.54 - $51.28

Q2 2014

Shares 522,571 Value ($000) $30,669 Avg Close $46.37 Range $43.49 - $49.44

Q1 2014

Shares 226,374 Value ($000) $13,111 Avg Close $42.22 Range $39.75 - $47.66

Q4 2013

Shares 341,895 Value ($000) $18,305 Avg Close $46.46 Range $41.12 - $50.21

Q3 2013

Shares 36,200 Value ($000) $2,237 Avg Close $46.67 Range $44.29 - $48.97

Q2 2013

Shares 64,721 Value ($000) $3,924 Avg Close $46.22 Range $42.87 - $49.18

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	425,236	$73,791	$182.07	$173.39 - $197.55
Q3 2025	130,614	$24,892	$176.64	$163.92 - $190.64
Q2 2025	28,095	$5,047	$172.09	$155.80 - $180.75
Q1 2025	136,043	$23,018	$161.93	$146.66 - $176.41
Q3 2024	748,133	$116,148	$145.81	$132.40 - $155.63
Q2 2024	1,167,147	$159,759	$132.98	$121.83 - $141.45
Q1 2024	148,861	$19,815	$125.21	$118.84 - $138.00
Q4 2023	201,424	$27,772	$126.28	$114.23 - $136.42
Q3 2023	74,649	$9,097	$127.23	$116.28 - $139.06
Q2 2023	127,563	$17,930	$130.98	$123.12 - $141.24
Q1 2023	175,513	$24,832	$135.20	$123.25 - $148.14
Q4 2022	22,420	$3,507	$135.28	$114.90 - $149.06
Q3 2022	111,741	$13,709	$123.30	$112.74 - $133.75
Q2 2022	80,832	$10,749	$126.95	$116.79 - $135.49
Q1 2022	3,083	$422	$129.14	$116.62 - $159.25
Q4 2021	92,569	$16,016	$140.46	$128.33 - $160.79
Q3 2021	125,243	$18,200	$134.48	$120.64 - $147.59
Q2 2021	78,449	$10,352	$119.77	$115.00 - $130.65
Q1 2021	51,381	$6,594	$112.12	$103.22 - $122.67
Q4 2020	208,925	$24,898	$110.49	$98.77 - $118.60
Q3 2020	57,666	$6,602	$106.55	$93.90 - $118.90
Q2 2020	1,226,473	$139,769	$95.20	$65.05 - $112.22
Q1 2020	24,698	$1,983	$92.18	$65.22 - $105.64
Q4 2019	32,094	$3,427	$92.43	$88.27 - $96.58
Q3 2019	597,038	$63,901	$90.53	$85.50 - $95.23
Q2 2019	114,368	$11,643	$84.30	$73.99 - $89.95
Q1 2019	8,566	$771	$75.54	$69.30 - $79.02
Q4 2018	2,702	$225	$81.26	$68.45 - $93.85
Q3 2018	502,546	$54,230	$94.62	$90.13 - $99.79
Q2 2018	1,365,091	$150,078	$89.48	$82.55 - $100.07
Q1 2018	529,670	$53,126	$87.50	$81.42 - $92.99
Q4 2017	255,771	$25,191	$80.65	$76.65 - $87.31
Q3 2017	317,199	$29,703	$89.87	$77.62 - $95.26
Q2 2017	18,106	$2,013	$89.16	$81.72 - $94.33
Q3 2016	51,842	$4,387	$69.82	$66.73 - $72.20
Q2 2016	332,851	$27,097	$62.99	$58.34 - $67.34
Q1 2016	402,233	$28,740	$55.15	$49.08 - $59.76
Q4 2015	539,986	$38,415	$54.99	$49.21 - $59.25
Q3 2015	403,195	$24,785	$56.82	$48.84 - $61.18
Q2 2015	286,684	$20,791	$59.70	$56.18 - $71.98
Q1 2015	246,349	$18,931	$57.60	$52.93 - $63.03
Q4 2014	2,467,017	$165,438	$50.52	$45.06 - $54.86
Q3 2014	112,053	$6,800	$49.06	$46.54 - $51.28
Q2 2014	522,571	$30,669	$46.37	$43.49 - $49.44
Q1 2014	226,374	$13,111	$42.22	$39.75 - $47.66
Q4 2013	341,895	$18,305	$46.46	$41.12 - $50.21
Q3 2013	36,200	$2,237	$46.67	$44.29 - $48.97
Q2 2013	64,721	$3,924	$46.22	$42.87 - $49.18