Quest Diagnostics Incorporated
US ˙ NYSE ˙ US74834L1008

SecurityDGX / Quest Diagnostics Incorporated
InstitutionWhittier Trust Co
Latest Disclosed Ownership1,158 shares
Latest Disclosed Value $ 230,396
Whittier Trust Co ownership in DGX / Quest Diagnostics Incorporated

On April 28, 2026 - Whittier Trust Co filed a 13F-HR form disclosing ownership of 1,158 shares of Quest Diagnostics Incorporated (US:DGX) valued at $226,945 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 1,158 shares of Quest Diagnostics Incorporated. This represents a change in shares of 0.00% during the quarter. The current value of the position is $224,270 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)
2026-04-28 2026-03-31 13F QUEST DIAGNOSTICS common 74834L100 1,158 0 0.00 230 10.58 0.0014
2026-01-26 2025-12-31 13F QUEST DIAGNOSTICS common 74834L100 1,158 -106 -8.39 209 -7.96 0.0023
2025-10-31 2025-09-30 13F QUEST DIAGNOSTICS common 74834L100 1,264 -294 -18.87 227 -19.00 0.0026
2025-07-30 2025-06-30 13F QUEST DIAGNOSTICS INC COM US LARGE-CAP EQUITIES 74834L100 1,558 0 0.00 280 6.08 0.0034
2025-05-02 2025-03-31 13F QUEST DIAGNOSTICS INC COM US LARGE-CAP EQUITIES 74834L100 1,558 0 0.00 264 11.91 0.0037
2025-02-11 2024-12-31 13F QUEST DIAGNOSTICS INC COM US LARGE-CAP EQUITIES 74834L100 1,558 400 34.54 235 31.28 0.0031
2024-10-21 2024-09-30 13F QUEST DIAGNOSTICS INC COM US LARGE-CAP EQUITIES 74834L100 1,158 0 0.00 180 13.29 0.0024
2024-07-29 2024-06-30 13F QUEST DIAGNOSTICS INC COM US LARGE-CAP EQUITIES 74834L100 1,158 0 0.00 159 2.60 0.0022
2024-05-02 2024-03-31 13F QUEST DIAGNOSTICS INC COM US LARGE-CAP EQUITIES 74834L100 1,158 0 0.00 154 -3.14 0.0022
2024-01-11 2023-12-31 13F QUEST DIAGNOSTICS INC COM US LARGE-CAP EQUITIES 74834L100 1,158 -1,793 -60.76 160 -55.71 0.0026
2023-10-27 2023-09-30 13F QUEST DIAGNOSTICS INC COM US LARGE-CAP EQUITIES 74834L100 2,951 19 0.65 360 -12.86 0.0064
2023-07-24 2023-06-30 13F QUEST DIAGNOSTICS INC COM US LARGE-CAP EQUITIES 74834L100 2,932 0 0.00 412 -0.48 0.0072
2023-04-21 2023-03-31 13F QUEST DIAGNOSTICS INC COM US LARGE-CAP EQUITIES 74834L100 2,932 0 0.00 415 -9.61 0.0076
2023-01-25 2022-12-31 13F QUEST DIAGNOSTICS INC COM US LARGE-CAP EQUITIES 74834L100 2,932 -7 -0.24 459 26.87 0.0089
2022-10-21 2022-09-30 13F QUEST DIAGNOSTICS INC COM US LARGE-CAP EQUITIES 74834L100 2,939 0 0.00 361 -7.67 0.0076
2022-07-28 2022-06-30 13F QUEST DIAGNOSTICS INC COM US LARGE-CAP EQUITIES 74834L100 2,939 0 0.00 391 -2.74 0.0079
2022-04-29 2022-03-31 13F QUEST DIAGNOSTICS INC COM US LARGE-CAP EQUITIES 74834L100 2,939 7 0.24 402 -20.71 0.0068
2022-01-19 2021-12-31 13F QUEST DIAGNOSTICS INC COM US LARGE-CAP EQUITIES 74834L100 2,932 0 0.00 507 19.01 0.0082
2021-11-01 2021-09-30 13F QUEST DIAGNOSTICS INC COM US LARGE-CAP EQUITIES 74834L100 2,932 0 0.00 426 10.08 0.0078
2021-07-29 2021-06-30 13F QUEST DIAGNOSTICS INC COM US LARGE-CAP EQUITIES 74834L100 2,932 0 0.00 387 2.93 0.0069
2021-04-26 2021-03-31 13F QUEST DIAGNOSTICS INC COM US LARGE-CAP EQUITIES 74834L100 2,932 -1 -0.03 376 7.43 0.0073
2021-01-29 2020-12-31 13F QUEST DIAGNOSTICS INC COM US LARGE-CAP EQUITIES 74834L100 2,933 1 0.03 350 4.17 0.0075
2020-10-30 2020-09-30 13F QUEST DIAGNOSTICS INC COM US LARGE-CAP EQUITIES 74834L100 2,932 -17 -0.58 336 0.00 0.0080
2020-07-10 2020-06-30 13F QUEST DIAGNOSTICS INC COM US LARGE-CAP EQUITIES 74834L100 2,949 -100 -3.28 336 37.70 0.0093
2020-04-27 2020-03-31 13F QUEST DIAGNOSTICS INC COM US LARGE-CAP EQUITIES 74834L100 3,049 117 3.99 244 -22.04 0.0080
2020-01-31 2019-12-31 13F QUEST DIAGNOSTICS INC COM US LARGE-CAP EQUITIES 74834L100 2,932 0 0.00 313 -0.32 0.0082
2019-10-18 2019-09-30 13F QUEST DIAGNOSTICS INC COM US LARGE-CAP EQUITIES 74834L100 2,932 0 0.00 314 5.02 0.0090
2019-07-23 2019-06-30 13F QUEST DIAGNOSTICS INC COM US LARGE-CAP EQUITIES 74834L100 2,932 0 0.00 299 13.26 0.0088
2019-04-29 2019-03-31 13F QUEST DIAGNOSTICS INC COM US LARGE-CAP EQUITIES 74834L100 2,932 0 0.00 264 8.20 0.0081
2019-02-07 2018-12-31 13F QUEST DIAGNOSTICS INC COM US LARGE-CAP EQUITIES 74834L100 2,932 1,774 153.20 244 95.20 0.0084
2018-10-23 2018-09-30 13F QUEST DIAGNOSTICS INC COM US LARGE-CAP EQUITIES 74834L100 1,158 -39 -3.26 125 -5.30 0.0039
2018-07-27 2018-06-30 13F/A-1 QUEST DIAGNOSTICS INC COM US LARGE-CAP EQUITIES 74834L100 1,197 0 0.00 132 10.00 0.0044
2018-07-20 2018-06-30 13F QUEST DIAGNOSTICS INC COM US SMALL AND MID-CAP EQUITIES 74834L100 1,028 -169 60
2018-05-01 2018-03-31 13F QUEST DIAGNOSTICS INC COM US LARGE-CAP EQUITIES 74834L100 1,197 39 3.37 120 5.26 0.0040
2018-02-07 2017-12-31 13F QUEST DIAGNOSTICS INC COM US LARGE-CAP EQUITIES 74834L100 1,158 130 12.65 114 18.75 0.0040
2017-10-23 2017-09-30 13F QUEST DIAGNOSTICS INC COM US LARGE-CAP EQUITIES 74834L100 1,028 0 0.00 96 -15.79 0.0035
2017-07-20 2017-06-30 13F QUEST DIAGNOSTICS INC COM US LARGE-CAP EQUITIES 74834L100 1,028 0 0.00 114 12.87 0.0044
2017-04-26 2017-03-31 13F QUEST DIAGNOSTICS US SMALL AND MID-CAP EQUITIES 74834L100 1,028 0 0.00 101 7.45 0.0041
2017-01-18 2016-12-31 13F QUEST DIAGNOSTICS INC COM US SMALL AND MID-CAP EQUITIES 74834L100 1,028 0 0.00 94 8.05 0.0040
2016-11-10 2016-09-30 13F QUEST DIAGNOSTICS INC COM US SMALL AND MID-CAP EQUITIES 74834L100 1,028 0 0.00 87 3.57 0.0038
2016-07-28 2016-06-30 13F QUEST DIAGNOSTICS INC COM US SMALL AND MID-CAP EQUITIES 74834L100 1,028 0 0.00 84 15.07 0.0037
2016-04-28 2016-03-31 13F QUEST DIAGNOSTICS INC COM US SMALL AND MID-CAP EQUITIES 74834L100 1,028 0 0.00 73 0.00 0.0032
2016-02-10 2015-12-31 13F QUEST DIAGNOSTICS INC COM US SMALL AND MID-CAP EQUITIES 74834L100 1,028 0 0.00 73 15.87 0.0033
2015-11-12 2015-09-30 13F QUEST DIAGNOSTICS INC COM US SMALL AND MID-CAP EQUITIES 74834L100 1,028 0 0.00 63 -16.00 0.0031
2015-08-13 2015-06-30 13F QUEST DIAGNOSTICS INC COM US SMALL AND MID-CAP EQUITIES 74834L100 1,028 -179 -14.83 75 -19.35 0.0033
2015-05-05 2015-03-31 13F QUEST DIAGNOSTICS INC COM US SMALL AND MID-CAP EQUITIES 74834L100 1,207 1,207 0.00 93 0.0043
2015-02-04 2014-12-31 13F QUEST DIAGNOSTICS INC COM US SMALL AND MID-CAP EQUITIES 74834L100 0 -1,028 -100.00 0 -100.00
2014-11-07 2014-09-30 13F QUEST DIAGNOSTICS INC COM US SMALL AND MID-CAP EQUITIES 74834L100 1,028 0 0.00 62 3.33 0.0030
2014-08-04 2014-06-30 13F QUEST DIAGNOSTICS INC COM US SMALL AND MID-CAP EQUITIES 74834L100 1,028 0 0.00 60 0.00 0.0030
2014-05-01 2014-03-31 13F QUEST DIAGNOSTICS INC COM US SMALL AND MID-CAP EQUITIES 74834L100 1,028 0 0.00 60 9.09 0.0031
2014-02-05 2013-12-31 13F QUEST DIAGNOSTICS INC COM US SMALL AND MID-CAP EQUITIES 74834L100 1,028 0 0.00 55 -14.06 0.0028
2013-11-18 2013-09-30 13F QUEST DIAGNOSTICS COM 74834L100 1,028 0 0.00 64 3.23 0.0035
2013-08-14 2013-06-30 13F QUEST DIAGNOSTICS COM 74834L100 1,028 1,028 62 0.0035
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.