QUEST DIAGNOSTICS INC

Ticker: DGX CUSIP: 74834L100 Class: COMMON STOCK

Robeco Institutional Asset Management B.V.'s Holding History (CIK: 0001418773)

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

Q4 2025

Shares 109,514 Value ($000) $19,004 Avg Close $182.07 Range $173.39 - $197.55

Q3 2025

Shares 111,454 Value ($000) $21,241 Avg Close $176.64 Range $163.92 - $190.64

Q2 2025

Shares 115,860 Value ($000) $20,812 Avg Close $172.09 Range $155.80 - $180.75

Q1 2025

Shares 121,732 Value ($000) $20,597 Avg Close $161.93 Range $146.66 - $176.41

Q4 2024

Shares 117,280 Value ($000) $17,693 Avg Close $152.61 Range $143.46 - $162.25

Q3 2024

Shares 124,484 Value ($000) $19,326 Avg Close $145.81 Range $132.40 - $155.63

Q2 2024

Shares 112,401 Value ($000) $15,385 Avg Close $132.98 Range $121.83 - $141.45

Q1 2024

Shares 325,076 Value ($000) $43,271 Avg Close $125.21 Range $118.84 - $138.00

Q4 2023

Shares 459,070 Value ($000) $63,297 Avg Close $126.28 Range $114.23 - $136.42

Q3 2023

Shares 505,551 Value ($000) $61,606 Avg Close $127.23 Range $116.28 - $139.06

Q2 2023

Shares 587,096 Value ($000) $82,522 Avg Close $130.98 Range $123.12 - $141.24

Q1 2023

Shares 864,354 Value ($000) $122,289 Avg Close $135.20 Range $123.25 - $148.14

Q4 2022

Shares 819,524 Value ($000) $128,206 Avg Close $135.28 Range $114.90 - $149.06

Q3 2022

Shares 852,937 Value ($000) $104,647 Avg Close $123.30 Range $112.74 - $133.75

Q2 2022

Shares 868,963 Value ($000) $115,554 Avg Close $126.95 Range $116.79 - $135.49

Q1 2022

Shares 911,903 Value ($000) $124,804 Avg Close $129.14 Range $116.62 - $159.25

Q4 2021

Shares 802,800 Value ($000) $138,896 Avg Close $140.46 Range $128.33 - $160.79

Q3 2021

Shares 544,088 Value ($000) $79,063 Avg Close $134.48 Range $120.64 - $147.59

Q2 2021

Shares 332,042 Value ($000) $43,819 Avg Close $119.77 Range $115.00 - $130.65

Q1 2021

Shares 369,289 Value ($000) $47,398 Avg Close $112.12 Range $103.22 - $122.67

Q4 2020

Shares 351,173 Value ($000) $41,848 Avg Close $110.49 Range $98.77 - $118.60

Q3 2020

Shares 332,974 Value ($000) $38,122 Avg Close $106.55 Range $93.90 - $118.90

Q2 2020

Shares 330,271 Value ($000) $37,638 Avg Close $95.20 Range $65.05 - $112.22

Q1 2020

Shares 229,340 Value ($000) $18,418 Avg Close $92.18 Range $65.22 - $105.64

Q4 2019

Shares 229,233 Value ($000) $24,477 Avg Close $92.43 Range $88.27 - $96.58

Q3 2019

Shares 178,606 Value ($000) $19,118 Avg Close $90.53 Range $85.50 - $95.23

Q2 2019

Shares 146,914 Value ($000) $14,958 Avg Close $84.30 Range $73.99 - $89.95

Q1 2019

Shares 157,250 Value ($000) $14,140 Avg Close $75.54 Range $69.30 - $79.02

Q4 2018

Shares 721,247 Value ($000) $60,058 Avg Close $81.26 Range $68.45 - $93.85

Q3 2018

Shares 1,002,073 Value ($000) $108,139 Avg Close $94.62 Range $90.13 - $99.79

Q2 2018

Shares 999,688 Value ($000) $109,906 Avg Close $89.48 Range $82.55 - $100.07

Q1 2018

Shares 1,012,694 Value ($000) $101,573 Avg Close $87.50 Range $81.42 - $92.99

Q4 2017

Shares 1,028,148 Value ($000) $101,265 Avg Close $80.65 Range $76.65 - $87.31

Q3 2017

Shares 1,092,810 Value ($000) $102,331 Avg Close $89.87 Range $77.62 - $95.26

Q2 2017

Shares 1,039,157 Value ($000) $115,509 Avg Close $89.16 Range $81.72 - $94.33

Q1 2017

Shares 243,581 Value ($000) $23,918 Avg Close $80.00 Range $75.65 - $83.94

Q4 2016

Shares 165,150 Value ($000) $15,177 Avg Close $71.99 Range $66.09 - $78.16

Q3 2016

Shares 181,372 Value ($000) $15,350 Avg Close $69.82 Range $66.73 - $72.20

Q2 2016

Shares 61,911 Value ($000) $5,040 Avg Close $62.99 Range $58.34 - $67.34

Q1 2016

Shares 54,155 Value ($000) $3,869 Avg Close $55.15 Range $49.08 - $59.76

Q4 2015

Shares 75,727 Value ($000) $5,388 Avg Close $54.99 Range $49.21 - $59.25

Q3 2015

Shares 401,074 Value ($000) $24,654 Avg Close $56.82 Range $48.84 - $61.18

Q2 2015

Shares 357,794 Value ($000) $25,947 Avg Close $59.70 Range $56.18 - $71.98

Q1 2015

Shares 410,673 Value ($000) $31,560 Avg Close $57.60 Range $52.93 - $63.03

Q4 2014

Shares 429,836 Value ($000) $28,824 Avg Close $50.52 Range $45.06 - $54.86

Q3 2014

Shares 389,045 Value ($000) $23,607 Avg Close $49.06 Range $46.54 - $51.28

Q2 2014

Shares 372,545 Value ($000) $21,865 Avg Close $46.37 Range $43.49 - $49.44

Q1 2014

Shares 421,629 Value ($000) $24,422 Avg Close $42.22 Range $39.75 - $47.66

Q4 2013

Shares 207,379 Value ($000) $11,103 Avg Close $46.46 Range $41.12 - $50.21

Q3 2013

Shares 134,197 Value ($000) $8,292 Avg Close $46.67 Range $44.29 - $48.97

Q2 2013

Shares 10,815 Value ($000) $656 Avg Close $46.22 Range $42.87 - $49.18

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	109,514	$19,004	$182.07	$173.39 - $197.55
Q3 2025	111,454	$21,241	$176.64	$163.92 - $190.64
Q2 2025	115,860	$20,812	$172.09	$155.80 - $180.75
Q1 2025	121,732	$20,597	$161.93	$146.66 - $176.41
Q4 2024	117,280	$17,693	$152.61	$143.46 - $162.25
Q3 2024	124,484	$19,326	$145.81	$132.40 - $155.63
Q2 2024	112,401	$15,385	$132.98	$121.83 - $141.45
Q1 2024	325,076	$43,271	$125.21	$118.84 - $138.00
Q4 2023	459,070	$63,297	$126.28	$114.23 - $136.42
Q3 2023	505,551	$61,606	$127.23	$116.28 - $139.06
Q2 2023	587,096	$82,522	$130.98	$123.12 - $141.24
Q1 2023	864,354	$122,289	$135.20	$123.25 - $148.14
Q4 2022	819,524	$128,206	$135.28	$114.90 - $149.06
Q3 2022	852,937	$104,647	$123.30	$112.74 - $133.75
Q2 2022	868,963	$115,554	$126.95	$116.79 - $135.49
Q1 2022	911,903	$124,804	$129.14	$116.62 - $159.25
Q4 2021	802,800	$138,896	$140.46	$128.33 - $160.79
Q3 2021	544,088	$79,063	$134.48	$120.64 - $147.59
Q2 2021	332,042	$43,819	$119.77	$115.00 - $130.65
Q1 2021	369,289	$47,398	$112.12	$103.22 - $122.67
Q4 2020	351,173	$41,848	$110.49	$98.77 - $118.60
Q3 2020	332,974	$38,122	$106.55	$93.90 - $118.90
Q2 2020	330,271	$37,638	$95.20	$65.05 - $112.22
Q1 2020	229,340	$18,418	$92.18	$65.22 - $105.64
Q4 2019	229,233	$24,477	$92.43	$88.27 - $96.58
Q3 2019	178,606	$19,118	$90.53	$85.50 - $95.23
Q2 2019	146,914	$14,958	$84.30	$73.99 - $89.95
Q1 2019	157,250	$14,140	$75.54	$69.30 - $79.02
Q4 2018	721,247	$60,058	$81.26	$68.45 - $93.85
Q3 2018	1,002,073	$108,139	$94.62	$90.13 - $99.79
Q2 2018	999,688	$109,906	$89.48	$82.55 - $100.07
Q1 2018	1,012,694	$101,573	$87.50	$81.42 - $92.99
Q4 2017	1,028,148	$101,265	$80.65	$76.65 - $87.31
Q3 2017	1,092,810	$102,331	$89.87	$77.62 - $95.26
Q2 2017	1,039,157	$115,509	$89.16	$81.72 - $94.33
Q1 2017	243,581	$23,918	$80.00	$75.65 - $83.94
Q4 2016	165,150	$15,177	$71.99	$66.09 - $78.16
Q3 2016	181,372	$15,350	$69.82	$66.73 - $72.20
Q2 2016	61,911	$5,040	$62.99	$58.34 - $67.34
Q1 2016	54,155	$3,869	$55.15	$49.08 - $59.76
Q4 2015	75,727	$5,388	$54.99	$49.21 - $59.25
Q3 2015	401,074	$24,654	$56.82	$48.84 - $61.18
Q2 2015	357,794	$25,947	$59.70	$56.18 - $71.98
Q1 2015	410,673	$31,560	$57.60	$52.93 - $63.03
Q4 2014	429,836	$28,824	$50.52	$45.06 - $54.86
Q3 2014	389,045	$23,607	$49.06	$46.54 - $51.28
Q2 2014	372,545	$21,865	$46.37	$43.49 - $49.44
Q1 2014	421,629	$24,422	$42.22	$39.75 - $47.66
Q4 2013	207,379	$11,103	$46.46	$41.12 - $50.21
Q3 2013	134,197	$8,292	$46.67	$44.29 - $48.97
Q2 2013	10,815	$656	$46.22	$42.87 - $49.18