Quest Diagnostics Incorporated
US ˙ NYSE ˙ US74834L1008

SecurityDGX / Quest Diagnostics Incorporated
InstitutionMercer Global Advisors Inc /adv
Latest Disclosed Ownership101,846 shares
Latest Disclosed Value $ 19,959,699
Mercer Global Advisors Inc /adv reports 4.32% increase in ownership of DGX / Quest Diagnostics Incorporated

On May 15, 2026 - Mercer Global Advisors Inc /adv filed a 13F-HR form disclosing ownership of 101,846 shares of Quest Diagnostics Incorporated (US:DGX) valued at $19,959,779 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 97,627 shares of Quest Diagnostics Incorporated. This represents a change in shares of 4.32% during the quarter. The current value of the position is $20,398,735 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)
2026-05-15 2026-03-31 13F QUEST DIAGNOSTICS COM 74834L100 101,846 4,219 4.32 19,960 17.81 0.0295
2026-02-17 2025-12-31 13F QUEST DIAGNOSTICS COM 74834L100 97,627 4,805 5.18 16,941 -4.23 0.0258
2025-11-14 2025-09-30 13F QUEST DIAGNOSTICS COM 74834L100 92,822 8,217 9.71 17,690 16.40 0.0295
2025-08-14 2025-06-30 13F QUEST DIAGNOSTICS COM 74834L100 84,605 10,591 14.31 15,198 21.35 0.0310
2025-05-15 2025-03-31 13F QUEST DIAGNOSTICS COM 74834L100 74,014 4,862 7.03 12,523 20.04 0.0287
2025-02-14 2024-12-31 13F QUEST DIAGNOSTICS COM 74834L100 69,152 -7,034 -9.23 10,432 -11.05 0.0255
2024-11-14 2024-09-30 13F QUEST DIAGNOSTICS COM 74834L100 76,186 25,363 49.90 11,729 66.95 0.0274
2024-08-12 2024-06-30 13F QUEST DIAGNOSTICS COM 74834L100 50,823 598 1.19 7,026 116,983.33 0.0192
2024-05-15 2024-03-31 13F QUEST DIAGNOSTICS COM 74834L100 50,225 -16,136 -24.32 7 -33.33 0.0190
2024-02-15 2023-12-31 13F QUEST DIAGNOSTICS COM 74834L100 66,361 -941 -1.40 9 12.50 0.0275
2023-11-15 2023-09-30 13F/A-1 QUEST DIAGNOSTICS COM 74834L100 67,302 1,083 1.64 8 -11.11 0.0311
2023-11-14 2023-09-30 13F QUEST DIAGNOSTICS COM 74834L100 67,302 1,083 8 0.0311
2023-08-14 2023-06-30 13F QUEST DIAGNOSTICS COM 74834L100 66,219 -3,863 -5.51 9 0.00 0.0369
2023-05-16 2023-03-31 13F QUEST DIAGNOSTICS COM 74834L100 70,082 -2,966 -4.06 10 -18.18 0.0450
2023-02-09 2022-12-31 13F QUEST DIAGNOSTICS COM 74834L100 73,048 15,784 27.56 11 -99.84 0.0572
2022-11-15 2022-09-30 13F QUEST DIAGNOSTICS COM 74834L100 57,264 1,521 2.73 7,026 -5.22 0.0417
2022-08-10 2022-06-30 13F QUEST DIAGNOSTICS COM 74834L100 55,743 3,463 6.62 7,413 3.61 0.0454
2022-05-10 2022-03-31 13F QUEST DIAGNOSTICS COM 74834L100 52,280 2,065 4.11 7,155 -17.65 0.0421
2022-02-04 2021-12-31 13F QUEST DIAGNOSTICS COM 74834L100 50,215 981 1.99 8,688 21.44 0.0536
2021-11-10 2021-09-30 13F QUEST DIAGNOSTICS COM 74834L100 49,234 1,878 3.97 7,154 14.46 0.0500
2021-08-10 2021-06-30 13F QUEST DIAGNOSTICS COM 74834L100 47,356 2,008 4.43 6,250 7.39 0.0481
2021-08-10 2021-03-31 13F/A-1 QUEST DIAGNOSTICS COM 74834L100 45,348 18,246 67.32 5,820 80.19 0.0529
2021-05-11 2021-03-31 13F QUEST DIAGNOSTICS COM 74834L100 41,358 14,256 5,308 0.0508
2021-02-12 2020-12-31 13F QUEST DIAGNOSTICS COM 74834L100 27,102 3,722 15.92 3,230 20.66 0.0403
2020-12-10 2020-09-30 13F QUEST DIAGNOSTICS COM 74834L100 23,380 921 4.10 2,677 4.61 0.0403
2020-08-10 2020-06-30 13F QUEST DIAGNOSTICS COM 74834L100 22,459 -4,130 -15.53 2,559 19.86 0.0465
2020-05-18 2020-03-31 13F QUEST DIAGNOSTICS COM 74834L100 26,589 6,776 34.20 2,135 0.90 0.0470
2020-02-13 2019-12-31 13F QUEST DIAGNOSTICS INC COM COM 74834L100 19,813 128 0.65 2,116 0.47 0.0423
2019-11-12 2019-09-30 13F QUEST DIAGNOSTICS INC COM COM 74834L100 19,685 796 4.21 2,106 9.52 0.0495
2019-08-14 2019-06-30 13F QUEST DIAGNOSTICS INC COM COM 74834L100 18,889 1,671 9.70 1,923 24.22 0.0510
2019-04-23 2019-03-31 13F/A-1 QUEST DIAGNOSTICS INC COM COM 74834L100 17,218 17,218 1,548 0.0557
2019-04-12 2019-03-31 13F QUEST DIAGNOSTICS INC COM 74834L100 9,916 826 0.0440
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.