Quest Diagnostics Incorporated
US ˙ NYSE ˙ US74834L1008

SecurityDGX / Quest Diagnostics Incorporated
InstitutionNatixis
Latest Disclosed Ownership28,191 shares
Latest Disclosed Value $ 5,524,872
Natixis ownership in DGX / Quest Diagnostics Incorporated

On May 14, 2026 - Natixis filed a 13F-HR form disclosing ownership of 28,191 shares of Quest Diagnostics Incorporated (US:DGX) valued at $5,524,872 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 0 shares of Quest Diagnostics Incorporated. The current value of the position is $5,459,751 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F QUEST DIAGNOSTICS COM 74834L100 28,191 28,191 5,525 0.0179
2026-02-13 2025-12-31 13F QUEST DIAGNOSTICS COM 74834L100 0 -4,758 -100.00 0 -100.00
2025-11-14 2025-09-30 13F QUEST DIAGNOSTICS COM 74834L100 4,758 -4,544 -48.85 907 -45.75 0.0042
2025-08-13 2025-06-30 13F QUEST DIAGNOSTICS COM 74834L100 9,302 -770 -7.64 1,671 -1.82 0.0074
2025-07-18 2025-03-31 13F/A-1 QUEST DIAGNOSTICS COM 74834L100 10,072 2,893 40.30 1,702 57.06 0.0093
2025-05-14 2025-03-31 13F QUEST DIAGNOSTICS COM 74834L100 10,072 2,893 1,702 0.0093
2025-02-13 2024-12-31 13F QUEST DIAGNOSTICS COM 74834L100 7,179 -7,989 -52.67 1,083 -53.99 0.0066
2024-11-13 2024-09-30 13F QUEST DIAGNOSTICS COM 74834L100 15,168 3,996 35.77 2,355 53.96 0.0133
2024-08-13 2024-06-30 13F QUEST DIAGNOSTICS COM 74834L100 11,172 -8,711 -43.81 1,529 -42.21 0.0088
2024-05-13 2024-03-31 13F QUEST DIAGNOSTICS COM 74834L100 19,883 -17,043 -46.15 2,647 -48.03 0.0138
2024-02-13 2023-12-31 13F QUEST DIAGNOSTICS COM 74834L100 36,926 -8,725 -19.11 5,091 -8.48 0.0370
2023-11-14 2023-09-30 13F QUEST DIAGNOSTICS COM 74834L100 45,651 4,527 11.01 5,563 -3.75 0.0426
2023-08-11 2023-06-30 13F QUEST DIAGNOSTICS COM 74834L100 41,124 -271,624 -86.85 5,780 -86.94 0.0469
2023-05-12 2023-03-31 13F QUEST DIAGNOSTICS COM 74834L100 312,748 193,719 162.75 44,248 137.63 0.3991
2023-02-24 2022-12-31 13F/A-1 QUEST DIAGNOSTICS COM 74834L100 119,029 48,501 68.77 18,621 115.04 0.1045
2023-02-13 2022-12-31 13F QUEST DIAGNOSTICS COM 74834L100 73,056 2,528 11,428 0.0000
2022-11-14 2022-09-30 13F QUEST DIAGNOSTICS COM 74834L100 70,528 4,943 7.54 8,659 -0.76 0.0405
2022-08-12 2022-06-30 13F Quest Diagnostics COM 74834L100 65,585 -201,180 -75.41 8,725 -76.10 0.0316
2022-05-13 2022-03-31 13F QUEST DIAGNOSTICS COM 74834L100 266,765 10,442 4.07 36,510 -17.67 0.1272
2022-02-14 2021-12-31 13F QUEST DIAGNOSTICS COM 74834L100 256,323 203,819 388.20 44,346 481.28 0.1514
2021-11-12 2021-09-30 13F QUEST DIAGNOSTICS COM 74834L100 52,504 52,504 7,629 0.0264
2021-08-13 2021-06-30 13F QUEST DIAGNOSTICS CO 74834L100 0 -24,422 -100.00 0 -100.00
2021-05-14 2021-03-31 13F QUEST DIAGNOSTICS CO 74834L100 24,422 -25,759 -51.33 3,134 -47.59 0.0102
2021-02-12 2020-12-31 13F QUEST DIAGNOSTICS COM 74834L100 50,181 16,846 50.54 5,980 56.67 0.0217
2020-11-12 2020-09-30 13F QUEST DIAGNOSTICS COM 74834L100 33,335 14,291 75.04 3,817 75.90 0.0281
2020-08-13 2020-06-30 13F QUEST DIAGNOSTICS COM 74834L100 19,044 19,044 2,170 0.0169
2020-02-14 2019-12-31 13F QUEST DIAGNOSTICS COM 74834L100 0 -143,041 -100.00 0 -100.00
2019-11-13 2019-09-30 13F QUEST DIAGNOSTICS COM 74834L100 143,041 143,041 15,310 0.0986
2019-08-13 2019-06-30 13F QUEST DIAGNOSTICS COM 74834L100 0 -18,014 -100.00 0 -100.00
2019-05-15 2019-03-31 13F QUEST DIAGNOSTICS COM 74834L100 18,014 -175,505 -90.69 1,604 -90.05 0.0101
2019-02-14 2018-12-31 13F/A-1 QUEST DIAGNOSTICS COM 74834L100 193,519 -5,902 -2.96 16,114 -25.12 0.1327
2019-02-14 2018-12-31 13F QUEST DIAGNOSTICS COM 74834L100 193,519 -5,902 16,114
2018-11-14 2018-09-30 13F QUEST DIAGNOSTICS COM 74834L100 199,421 48,116 31.80 21,520 29.96 0.1244
2018-08-14 2018-06-30 13F QUEST DIAGNOSTICS COM 74834L100 151,305 133,040 728.39 16,559 808.34 0.0877
2018-05-15 2018-03-31 13F QUEST DIAGNOSTICS COM 74834L100 18,265 -19,094 -51.11 1,823 -50.45 0.0112
2018-02-14 2017-12-31 13F QUEST DIAGNOSTICS COM 74834L100 37,359 14,482 63.30 3,679 71.76 0.0283
2017-11-14 2017-09-30 13F QUEST DIAGNOSTICS COM 74834L100 22,877 -28,945 -55.85 2,142 -62.82 0.0197
2017-08-14 2017-06-30 13F QUEST DIAGNOSTICS COM 74834L100 51,822 8,351 19.21 5,761 34.98 0.0655
2017-05-15 2017-03-31 13F QUEST DIAGNOSTICS COM 74834L100 43,471 22,433 106.63 4,268 120.80 0.0532
2017-02-14 2016-12-31 13F QUEST DIAGNOSTICS COM 74834L100 21,038 16,432 356.75 1,933 395.64 0.0199
2016-11-14 2016-09-30 13F QUEST DIAGNOSTICS COM 74834L100 4,606 4,606 0.00 390 0.0045
2016-05-16 2016-03-31 13F QUEST DIAGNOSTICS COM 74834L100 0 0 0 0.0000
2016-02-16 2015-12-31 13F QUEST DIAGNOSTICS COM 74834L100 0 0 0 0.0000
2015-11-16 2015-09-30 13F QUEST DIAGNOSTICS COM 74834L100 0 -2,915 -100.00 0 -100.00
2015-08-14 2015-06-30 13F QUEST DIAGNOSTICS COM 74834L100 2,915 -455 -13.50 211 -18.53 0.0029
2015-05-22 2015-03-31 13F QUEST DIAGNOSTICS COM 74834L100 3,370 3,370 0.00 259 0.0036
2015-02-17 2014-12-31 13F QUEST DIAGNOSTICS COM 74834L100 0 -90,809 -100.00 0 -100.00
2014-11-14 2014-09-30 13F QUEST DIAGNOSTICS COM 74834L100 90,809 90,809 5,510 0.0849
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.