QUEST DIAGNOSTICS INC

Ticker: DGX CUSIP: 74834L100 Class: COMMON STOCK

Brandywine Global Investment Management, LLC's Holding History (CIK: 0000829108)

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

Q4 2025

Shares 78,605 Value ($000) $13,640 Avg Close $182.07 Range $173.39 - $197.55

Q3 2025

Shares 79,228 Value ($000) $15,099 Avg Close $176.64 Range $163.92 - $190.64

Q2 2025

Shares 78,828 Value ($000) $14,160 Avg Close $172.09 Range $155.80 - $180.75

Q1 2025

Shares 80,738 Value ($000) $13,661 Avg Close $161.93 Range $146.66 - $176.41

Q4 2024

Shares 86,385 Value ($000) $13,032 Avg Close $152.61 Range $143.46 - $162.25

Q3 2024

Shares 92,585 Value ($000) $13,795 Avg Close $145.81 Range $132.40 - $155.63

Q2 2024

Shares 88,549 Value ($000) $12,121 Avg Close $132.98 Range $121.83 - $141.45

Q1 2024

Shares 85,353 Value ($000) $11,361 Avg Close $125.21 Range $118.84 - $138.00

Q4 2023

Shares 85,701 Value ($000) $11,816 Avg Close $126.28 Range $114.23 - $136.42

Q3 2023

Shares 253,964 Value ($000) $30,948 Avg Close $127.23 Range $116.28 - $139.06

Q2 2023

Shares 263,969 Value ($000) $37,103 Avg Close $130.98 Range $123.12 - $141.24

Q1 2023

Shares 272,612 Value ($000) $38,569 Avg Close $135.20 Range $123.25 - $148.14

Q4 2022

Shares 280,099 Value ($000) $43,819 Avg Close $135.28 Range $114.90 - $149.06

Q3 2022

Shares 208,722 Value ($000) $25,608 Avg Close $123.30 Range $112.74 - $133.75

Q2 2022

Shares 315,262 Value ($000) $41,924 Avg Close $126.95 Range $116.79 - $135.49

Q1 2022

Shares 287,411 Value ($000) $39,335 Avg Close $129.14 Range $116.62 - $159.25

Q4 2021

Shares 270,115 Value ($000) $46,733 Avg Close $140.46 Range $128.33 - $160.79

Q3 2021

Shares 188,392 Value ($000) $27,375 Avg Close $134.48 Range $120.64 - $147.59

Q2 2021

Shares 148,128 Value ($000) $19,548 Avg Close $119.77 Range $115.00 - $130.65

Q1 2021

Shares 154,235 Value ($000) $19,795 Avg Close $112.12 Range $103.22 - $122.67

Q4 2020

Shares 112,958 Value ($000) $13,461 Avg Close $110.49 Range $98.77 - $118.60

Q3 2020

Shares 112,738 Value ($000) $12,908 Avg Close $106.55 Range $93.90 - $118.90

Q2 2020

Shares 116,920 Value ($000) $13,325 Avg Close $95.20 Range $65.05 - $112.22

Q1 2020

Shares 117,517 Value ($000) $9,437 Avg Close $92.18 Range $65.22 - $105.64

Q4 2019

Shares 119,465 Value ($000) $12,632 Avg Close $92.43 Range $88.27 - $96.58

Q3 2019

Shares 118,041 Value ($000) $12,634 Avg Close $90.53 Range $85.50 - $95.23

Q2 2019

Shares 115,386 Value ($000) $11,748 Avg Close $84.30 Range $73.99 - $89.95

Q1 2019

Shares 110,911 Value ($000) $9,974 Avg Close $75.54 Range $69.30 - $79.02

Q4 2018

Shares 113,316 Value ($000) $9,436 Avg Close $81.26 Range $68.45 - $93.85

Q3 2018

Shares 114,316 Value ($000) $12,336 Avg Close $94.62 Range $90.13 - $99.79

Q2 2018

Shares 117,982 Value ($000) $12,971 Avg Close $89.48 Range $82.55 - $100.07

Q1 2018

Shares 120,734 Value ($000) $12,110 Avg Close $87.50 Range $81.42 - $92.99

Q4 2017

Shares 120,231 Value ($000) $11,842 Avg Close $80.65 Range $76.65 - $87.31

Q3 2017

Shares 116,651 Value ($000) $10,924 Avg Close $89.87 Range $77.62 - $95.26

Q2 2017

Shares 166,880 Value ($000) $18,551 Avg Close $89.16 Range $81.72 - $94.33

Q1 2017

Shares 169,509 Value ($000) $16,645 Avg Close $80.00 Range $75.65 - $83.94

Q4 2016

Shares 169,967 Value ($000) $15,620 Avg Close $71.99 Range $66.09 - $78.16

Q3 2016

Shares 150,547 Value ($000) $12,741 Avg Close $69.82 Range $66.73 - $72.20

Q2 2016

Shares 130,234 Value ($000) $10,603 Avg Close $62.99 Range $58.34 - $67.34

Q1 2016

Shares 133,234 Value ($000) $9,520 Avg Close $55.15 Range $49.08 - $59.76

Q4 2015

Shares 134,625 Value ($000) $9,578 Avg Close $54.99 Range $49.21 - $59.25

Q3 2015

Shares 114,055 Value ($000) $7,011 Avg Close $56.82 Range $48.84 - $61.18

Q2 2015

Shares 89,587 Value ($000) $6,497 Avg Close $59.70 Range $56.18 - $71.98

Q1 2015

Shares 72,715 Value ($000) $5,589 Avg Close $57.60 Range $52.93 - $63.03

Q4 2014

Shares 52,315 Value ($000) $3,509 Avg Close $50.52 Range $45.06 - $54.86

Q3 2014

Shares 47,081 Value ($000) $2,857 Avg Close $49.06 Range $46.54 - $51.28

Q2 2014

Shares 3,611 Value ($000) $212 Avg Close $46.37 Range $43.49 - $49.44

Q1 2014

Shares 2,771 Value ($000) $161 Avg Close $42.22 Range $39.75 - $47.66

Q4 2013

Shares 502 Value ($000) $27 Avg Close $46.46 Range $41.12 - $50.21

Q2 2013

Shares 97 Value ($000) $6 Avg Close $46.22 Range $42.87 - $49.18

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	78,605	$13,640	$182.07	$173.39 - $197.55
Q3 2025	79,228	$15,099	$176.64	$163.92 - $190.64
Q2 2025	78,828	$14,160	$172.09	$155.80 - $180.75
Q1 2025	80,738	$13,661	$161.93	$146.66 - $176.41
Q4 2024	86,385	$13,032	$152.61	$143.46 - $162.25
Q3 2024	92,585	$13,795	$145.81	$132.40 - $155.63
Q2 2024	88,549	$12,121	$132.98	$121.83 - $141.45
Q1 2024	85,353	$11,361	$125.21	$118.84 - $138.00
Q4 2023	85,701	$11,816	$126.28	$114.23 - $136.42
Q3 2023	253,964	$30,948	$127.23	$116.28 - $139.06
Q2 2023	263,969	$37,103	$130.98	$123.12 - $141.24
Q1 2023	272,612	$38,569	$135.20	$123.25 - $148.14
Q4 2022	280,099	$43,819	$135.28	$114.90 - $149.06
Q3 2022	208,722	$25,608	$123.30	$112.74 - $133.75
Q2 2022	315,262	$41,924	$126.95	$116.79 - $135.49
Q1 2022	287,411	$39,335	$129.14	$116.62 - $159.25
Q4 2021	270,115	$46,733	$140.46	$128.33 - $160.79
Q3 2021	188,392	$27,375	$134.48	$120.64 - $147.59
Q2 2021	148,128	$19,548	$119.77	$115.00 - $130.65
Q1 2021	154,235	$19,795	$112.12	$103.22 - $122.67
Q4 2020	112,958	$13,461	$110.49	$98.77 - $118.60
Q3 2020	112,738	$12,908	$106.55	$93.90 - $118.90
Q2 2020	116,920	$13,325	$95.20	$65.05 - $112.22
Q1 2020	117,517	$9,437	$92.18	$65.22 - $105.64
Q4 2019	119,465	$12,632	$92.43	$88.27 - $96.58
Q3 2019	118,041	$12,634	$90.53	$85.50 - $95.23
Q2 2019	115,386	$11,748	$84.30	$73.99 - $89.95
Q1 2019	110,911	$9,974	$75.54	$69.30 - $79.02
Q4 2018	113,316	$9,436	$81.26	$68.45 - $93.85
Q3 2018	114,316	$12,336	$94.62	$90.13 - $99.79
Q2 2018	117,982	$12,971	$89.48	$82.55 - $100.07
Q1 2018	120,734	$12,110	$87.50	$81.42 - $92.99
Q4 2017	120,231	$11,842	$80.65	$76.65 - $87.31
Q3 2017	116,651	$10,924	$89.87	$77.62 - $95.26
Q2 2017	166,880	$18,551	$89.16	$81.72 - $94.33
Q1 2017	169,509	$16,645	$80.00	$75.65 - $83.94
Q4 2016	169,967	$15,620	$71.99	$66.09 - $78.16
Q3 2016	150,547	$12,741	$69.82	$66.73 - $72.20
Q2 2016	130,234	$10,603	$62.99	$58.34 - $67.34
Q1 2016	133,234	$9,520	$55.15	$49.08 - $59.76
Q4 2015	134,625	$9,578	$54.99	$49.21 - $59.25
Q3 2015	114,055	$7,011	$56.82	$48.84 - $61.18
Q2 2015	89,587	$6,497	$59.70	$56.18 - $71.98
Q1 2015	72,715	$5,589	$57.60	$52.93 - $63.03
Q4 2014	52,315	$3,509	$50.52	$45.06 - $54.86
Q3 2014	47,081	$2,857	$49.06	$46.54 - $51.28
Q2 2014	3,611	$212	$46.37	$43.49 - $49.44
Q1 2014	2,771	$161	$42.22	$39.75 - $47.66
Q4 2013	502	$27	$46.46	$41.12 - $50.21
Q2 2013	97	$6	$46.22	$42.87 - $49.18