Quest Diagnostics Incorporated
US ˙ NYSE ˙ US74834L1008

SecurityDGX / Quest Diagnostics Incorporated
InstitutionTd Asset Management Inc
Latest Disclosed Ownership57,605 shares
Latest Disclosed Value $ 11,289,428
Td Asset Management Inc reports 4.76% increase in ownership of DGX / Quest Diagnostics Incorporated

On May 11, 2026 - Td Asset Management Inc filed a 13F-HR form disclosing ownership of 57,605 shares of Quest Diagnostics Incorporated (US:DGX) valued at $11,289,428 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 54,988 shares of Quest Diagnostics Incorporated. This represents a change in shares of 4.76% during the quarter. The current value of the position is $11,537,705 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)
2026-05-11 2026-03-31 13F QUEST DIAGNOSTICS COM 74834L100 57,605 2,617 4.76 11,289 18.31 0.0092
2026-02-10 2025-12-31 13F QUEST DIAGNOSTICS COM 74834L100 54,988 -65,893 -54.51 9,542 -58.58 0.0077
2025-11-10 2025-09-30 13F QUEST DIAGNOSTICS COM 74834L100 120,881 -133 -0.11 23,038 5.98 0.0187
2025-07-28 2025-06-30 13F QUEST DIAGNOSTICS COM 74834L100 121,014 18,484 18.03 21,738 25.30 0.0186
2025-05-07 2025-03-31 13F QUEST DIAGNOSTICS COM 74834L100 102,530 6,825 7.13 17,348 20.16 0.0160
2025-02-11 2024-12-31 13F QUEST DIAGNOSTICS COM 74834L100 95,705 9,597 11.15 14,438 8.32 0.0128
2024-11-01 2024-09-30 13F QUEST DIAGNOSTICS COM 74834L100 86,108 43,676 102.93 13,330 129.49 0.0118
2024-08-02 2024-06-30 13F QUEST DIAGNOSTICS COM 74834L100 42,432 1,399 3.41 5,808 6.35 0.0054
2024-05-08 2024-03-31 13F QUEST DIAGNOSTICS COM 74834L100 41,033 934 2.33 5,462 -1.21 0.0051
2024-02-12 2023-12-31 13F QUEST DIAGNOSTICS COM 74834L100 40,099 2,431 6.45 5,529 20.44 0.0054
2023-10-27 2023-09-30 13F QUEST DIAGNOSTICS COM 74834L100 37,668 -4,541 -10.76 4,590 -22.62 0.0056
2023-08-09 2023-06-30 13F QUEST DIAGNOSTICS COM 74834L100 42,209 -4,927 -10.45 5,933 -11.04 0.0068
2023-05-10 2023-03-31 13F QUEST DIAGNOSTICS COM 74834L100 47,136 3,697 8.51 6,669 -1.87 0.0080
2023-02-07 2022-12-31 13F QUEST DIAGNOSTICS COM 74834L100 43,439 4,312 11.02 6,796 39.36 0.0084
2022-11-07 2022-09-30 13F QUEST DIAGNOSTICS COM 74834L100 39,127 -29,720 -43.17 4,876 -46.74 0.0061
2022-08-04 2022-06-30 13F QUEST DIAGNOSTICS COM 74834L100 68,847 -22,321 -24.48 9,155 -26.62 0.0106
2022-05-10 2022-03-31 13F QUEST DIAGNOSTICS COM 74834L100 91,168 13,354 17.16 12,477 -7.32 0.0074
2022-02-10 2021-12-31 13F QUEST DIAGNOSTICS COM 74834L100 77,814 8,611 12.44 13,463 33.88 0.0113
2021-11-09 2021-09-30 13F QUEST DIAGNOSTICS COM 74834L100 69,203 2,145 3.20 10,056 5.75 0.0104
2021-08-11 2021-06-30 13F QUEST DIAGNOSTICS COM 74834L100 67,058 -16,584 -19.83 9,509 -11.42 0.0097
2021-05-14 2021-03-31 13F QUEST DIAGNOSTICS COM 74834L100 83,642 31,538 60.53 10,735 72.89 0.0120
2021-02-16 2020-12-31 13F QUEST DIAGNOSTICS COM 74834L100 52,104 6,224 13.57 6,209 18.20 0.0075
2020-11-10 2020-09-30 13F QUEST DIAGNOSTICS COM 74834L100 45,880 13,322 40.92 5,253 41.59 0.0073
2020-08-13 2020-06-30 13F QUEST DIAGNOSTICS COM 74834L100 32,558 -2,124 -6.12 3,710 33.21 0.0053
2020-05-15 2020-03-31 13F QUEST DIAGNOSTICS COM 74834L100 34,682 -5,600 -13.90 2,785 -35.26 0.0047
2020-02-11 2019-12-31 13F QUEST DIAGNOSTICS COM 74834L100 40,282 -1,743 -4.15 4,302 -4.36 0.0062
2019-11-07 2019-09-30 13F QUEST DIAGNOSTICS COM 74834L100 42,025 1,390 3.42 4,498 8.73 0.0069
2019-08-01 2019-06-30 13F QUEST DIAGNOSTICS COM 74834L100 40,635 -16,192 -28.49 4,137 -19.04 0.0062
2019-05-08 2019-03-31 13F QUEST DIAGNOSTICS COM 74834L100 56,827 -9,370 -14.15 5,110 -7.29 0.0078
2019-02-01 2018-12-31 13F QUEST DIAGNOSTICS COM 74834L100 66,197 23,292 54.29 5,512 19.05 0.0096
2018-11-01 2018-09-30 13F QUEST DIAGNOSTICS COM 74834L100 42,905 397 0.93 4,630 -0.92 0.0068
2018-07-31 2018-06-30 13F QUEST DIAGNOSTICS COM 74834L100 42,508 3,487 8.94 4,673 19.39 0.0071
2018-05-11 2018-03-31 13F QUEST DIAGNOSTICS COM 74834L100 39,021 -4,277 -9.88 3,914 -8.21 0.0060
2018-02-02 2017-12-31 13F QUEST DIAGNOSTICS COM 74834L100 43,298 -1,826 -4.05 4,264 0.92 0.0062
2017-11-09 2017-09-30 13F QUEST DIAGNOSTICS COM 74834L100 45,124 -20,346 -31.08 4,225 -41.95 0.0063
2017-08-01 2017-06-30 13F QUEST DIAGNOSTICS COM 74834L100 65,470 -13,153 -16.73 7,278 -5.73 0.0115
2017-05-05 2017-03-31 13F QUEST DIAGNOSTICS COM 74834L100 78,623 -5,711 -6.77 7,720 -0.39 0.0123
2017-02-08 2016-12-31 13F QUEST DIAGNOSTICS COM 74834L100 84,334 5,951 7.59 7,750 16.84 0.0131
2016-11-02 2016-09-30 13F QUEST DIAGNOSTICS COM 74834L100 78,383 -14,003 -15.16 6,633 -11.81 0.0115
2016-08-04 2016-06-30 13F QUEST DIAGNOSTICS COM 74834L100 92,386 442 0.48 7,521 14.47 0.0136
2016-05-05 2016-03-31 13F QUEST DIAGNOSTICS COM 74834L100 91,944 -9,611 -9.46 6,570 -9.07 0.0123
2016-02-04 2015-12-31 13F QUEST DIAGNOSTICS COM 74834L100 101,555 -12,267 -10.78 7,225 3.26 0.0143
2015-11-12 2015-09-30 13F QUEST DIAGNOSTICS COM 74834L100 113,822 -7,700 -6.34 6,997 -20.61 0.0138
2015-08-11 2015-06-30 13F QUEST DIAGNOSTICS COM 74834L100 121,522 -16,691 -12.08 8,813 -17.03 0.0157
2015-04-28 2015-03-31 13F QUEST DIAGNOSTICS COM 74834L100 138,213 138,213 0.00 10,622 0.0192
2015-01-30 2014-12-31 13F QUEST DIAGNOSTICS COM 74834L100 0 -96,305 -100.00 0 -100.00
2014-11-06 2014-09-30 13F QUEST DIAGNOSTICS COM 74834L100 96,305 -58,577 -37.82 5,844 -35.71 0.0101
2014-08-12 2014-06-30 13F QUEST DIAGNOSTICS COM 74834L100 154,882 13,410 9.48 9,090 10.93 0.0155
2014-05-09 2014-03-31 13F QUEST DIAGNOSTICS COM 74834L100 141,472 17,590 14.20 8,194 23.55 0.0149
2014-02-07 2013-12-31 13F QUEST DIAGNOSTICS COM 74834L100 123,882 4,920 4.14 6,632 -9.77 0.0124
2013-11-08 2013-09-30 13F QUEST DIAGNOSTICS COM 74834L100 118,962 20,028 20.24 7,350 22.54 0.0146
2013-07-24 2013-06-30 13F QUEST DIAGNOSTICS COM 74834L100 98,934 98,934 5,998 0.0129
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.