Quest Diagnostics Incorporated
US ˙ NYSE ˙ US74834L1008

SecurityDGX / Quest Diagnostics Incorporated
InstitutionQube Research & Technologies Ltd
Latest Disclosed Ownership734,714 shares
Latest Disclosed Value $ 143,989,250
Qube Research & Technologies Ltd reports 0.17% increase in ownership of DGX / Quest Diagnostics Incorporated

On May 15, 2026 - Qube Research & Technologies Ltd filed a 13F-HR form disclosing ownership of 734,714 shares of Quest Diagnostics Incorporated (US:DGX) valued at $143,989,250 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 733,456 shares of Quest Diagnostics Incorporated. This represents a change in shares of 0.17% during the quarter. The current value of the position is $147,155,867 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 734,714 1,258 0.17 143,989 13.13 0.1601
2026-02-17 2025-12-31 13F QUEST DIAGNOSTICS COM 74834L100 733,456 203,656 38.44 127,277 26.05 0.1293
2025-11-14 2025-09-30 13F QUEST DIAGNOSTICS COM 74834L100 529,800 112,267 26.89 100,969 34.62 0.1043
2025-08-14 2025-06-30 13F QUEST DIAGNOSTICS COM 74834L100 417,533 -19,813 -4.53 75,001 1.36 0.0762
2025-05-15 2025-03-31 13F QUEST DIAGNOSTICS COM 74834L100 437,346 -11,206 -2.50 73,999 9.35 0.0858
2025-02-14 2024-12-31 13F QUEST DIAGNOSTICS COM 74834L100 448,552 312,001 228.49 67,669 219.20 0.0887
2024-11-14 2024-09-30 13F QUEST DIAGNOSTICS COM 74834L100 136,551 136,548 4,551,600.00 21,200 0.0312
2024-08-14 2024-06-30 13F QUEST DIAGNOSTICS COM 74834L100 3 -191,906 -100.00 0 -100.00 0.0000
2024-05-14 2024-03-31 13F QUEST DIAGNOSTICS COM 74834L100 191,909 187,430 4,184.64 25,545 4,040.19 0.0405
2024-02-13 2023-12-31 13F QUEST DIAGNOSTICS COM 74834L100 4,479 -138,917 -96.88 618 -96.47 0.0012
2023-11-13 2023-09-30 13F QUEST DIAGNOSTICS COM 74834L100 143,396 143,396 17,474 0.0457
2023-08-14 2023-06-30 13F QUEST DIAGNOSTICS COM 74834L100 0 -10,150 -100.00 0 -100.00
2023-05-15 2023-03-31 13F QUEST DIAGNOSTICS COM 74834L100 10,150 10,150 1,436 0.0062
2022-11-14 2022-09-30 13F QUEST DIAGNOSTICS COM 74834L100 0 -2,151 -100.00 0 -100.00
2022-08-15 2022-06-30 13F QUEST DIAGNOSTICS COM 74834L100 2,151 2,151 286 0.0021
2022-02-10 2021-12-31 13F/A-1 QUEST DIAGNOSTICS COM 74834L100 0 -131,526 -100.00 0 -100.00
2022-02-01 2021-12-31 13F QUEST DIAGNOSTICS COM 74834L100 0 -131,526 0
2021-11-12 2021-09-30 13F QUEST DIAGNOSTICS COM 74834L100 131,526 69,325 111.45 19,112 132.82 0.2397
2021-08-13 2021-06-30 13F QUEST DIAGNOSTICS COM 74834L100 62,201 20,732 49.99 8,209 54.25 0.0935
2021-05-14 2021-03-31 13F QUEST DIAGNOSTICS COM 74834L100 41,469 -36,072 -46.52 5,322 -42.41 0.0844
2021-02-16 2020-12-31 13F QUEST DIAGNOSTICS COM 74834L100 77,541 77,541 9,241 0.1314
2020-11-12 2020-09-30 13F QUEST DIAGNOSTICS COM 74834L100 0 -10,188 -100.00 0 -100.00
2020-08-14 2020-06-30 13F QUEST DIAGNOSTICS COM 74834L100 10,188 -42,305 -80.59 1,161 -72.46 0.0170
2020-05-15 2020-03-31 13F QUEST DIAGNOSTICS COM 74834L100 52,493 32,803 166.60 4,215 100.43 0.1731
2020-02-13 2019-12-31 13F QUEST DIAGNOSTICS COM 74834L100 19,690 19,690 2,103 0.0660
2019-08-02 2019-06-30 13F QUEST DIAGNOSTICS COM 74834L100 0 -4,639 -100.00 0 -100.00
2019-05-15 2019-03-31 13F QUEST DIAGNOSTICS COM 74834L100 4,639 4,639 417 0.0551
2019-02-14 2018-12-31 13F QUEST DIAGNOSTICS COM 74834L100 0 -1,593 -100.00 0 -100.00
2018-11-14 2018-09-30 13F QUEST DIAGNOSTICS COM 74834L100 1,593 1,170 276.60 172 265.96 0.0229
2018-08-15 2018-06-30 13F/A-1 QUEST DIAGNOSTICS COM 74834L100 423 -201 -32.21 47 -24.19 0.0297
2018-08-14 2018-06-30 13F QUEST DIAGNOSTICS COM 74834L100 423 -201 47
2018-05-14 2018-03-31 13F QUEST DIAGNOSTICS COM 74834L100 624 624 62 0.0238
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.