Quest Diagnostics Incorporated
US ˙ NYSE ˙ US74834L1008

SecurityDGX / Quest Diagnostics Incorporated
InstitutionCENTRAL TRUST Co
Latest Disclosed Ownership1,505 shares
Latest Disclosed Value $ 294,950
CENTRAL TRUST Co ownership in DGX / Quest Diagnostics Incorporated

On April 17, 2026 - CENTRAL TRUST Co filed a 13F-HR form disclosing ownership of 1,505 shares of Quest Diagnostics Incorporated (US:DGX) valued at $294,950 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 1,505 shares of Quest Diagnostics Incorporated. This represents a change in shares of 0.00% during the quarter. The current value of the position is $291,473 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)
2026-04-17 2026-03-31 13F QUEST DIAGNOSTICS COM 74834L100 1,505 0 0.00 295 12.64 0.0031
2026-02-02 2025-12-31 13F QUEST DIAGNOSTICS COM 74834L100 1,505 -700 -31.75 261 -37.86 0.0051
2025-11-06 2025-09-30 13F QUEST DIAGNOSTICS COM 74834L100 2,205 -95 -4.13 420 1.69 0.0088
2025-08-07 2025-06-30 13F QUEST DIAGNOSTICS COM 74834L100 2,300 -119 -4.92 413 0.98 0.0095
2025-04-18 2025-03-31 13F QUEST DIAGNOSTICS COM 74834L100 2,419 -265 -9.87 409 1.24 0.0101
2025-01-24 2024-12-31 13F QUEST DIAGNOSTICS COM 74834L100 2,684 417 18.39 405 15.10 0.0099
2024-10-22 2024-09-30 13F QUEST DIAGNOSTICS COM 74834L100 2,267 -23 -1.00 352 12.14 0.0082
2024-08-05 2024-06-30 13F QUEST DIAGNOSTICS COM 74834L100 2,290 -133 -5.49 314 -2.80 0.0077
2024-04-24 2024-03-31 13F QUEST DIAGNOSTICS COM 74834L100 2,423 -40 -1.62 323 -5.01 0.0080
2024-01-24 2023-12-31 13F QUEST DIAGNOSTICS COM 74834L100 2,463 -63 -2.49 340 10.42 0.0090
2023-10-26 2023-09-30 13F QUEST DIAGNOSTICS COM 74834L100 2,526 -339 -11.83 308 -23.63 0.0089
2023-07-26 2023-06-30 13F QUEST DIAGNOSTICS COM 74834L100 2,865 -700 -19.64 403 -20.24 0.0112
2023-04-19 2023-03-31 13F QUEST DIAGNOSTICS COM 74834L100 3,565 236 7.09 504 -3.08 0.0148
2023-01-26 2022-12-31 13F QUEST DIAGNOSTICS COM 74834L100 3,329 -60 -1.77 521 25.30 0.0161
2022-11-17 2022-09-30 13F/A-2 QUEST DIAGNOSTICS COM 74834L100 3,389 955 39.24 415 28.09 0.0142
2022-11-04 2022-09-30 13F/A-1 QUEST DIAGNOSTICS COM 74834L100 2,434 0 324 0.0058
2022-11-03 2022-09-30 13F QUEST DIAGNOSTICS COM 74834L100 2,434 0 324 0.0058
2022-08-09 2022-06-30 13F QUEST DIAGNOSTICS COM 74834L100 2,434 -23 -0.94 324 -3.57 0.0107
2022-05-03 2022-03-31 13F QUEST DIAGNOSTICS COMMON STOCK 74834L100 2,457 -40 -1.60 336 -22.22 0.0096
2022-02-08 2021-12-31 13F QUEST DIAGNOSTICS COMMON STOCK 74834L100 2,497 -110 -4.22 432 13.98 0.0122
2021-10-19 2021-09-30 13F QUEST DIAGNOSTICS COMMON STOCK 74834L100 2,607 358 15.92 379 28.04 0.0135
2021-07-23 2021-06-30 13F QUEST DIAGNOSTICS COMMON STOCK 74834L100 2,249 15 0.67 296 3.14 0.0107
2021-04-23 2021-03-31 13F QUEST DIAGNOSTICS COMMON STOCK 74834L100 2,234 125 5.93 287 14.34 0.0112
2021-01-29 2020-12-31 13F QUEST DIAGNOSTICS COMMON STOCK 74834L100 2,109 -24 -1.13 251 2.87 0.0103
2020-10-22 2020-09-30 13F QUEST DIAGNOSTICS COMMON STOCK 74834L100 2,133 -471 -18.09 244 -17.85 0.0110
2020-07-14 2020-06-30 13F QUEST DIAGNOSTICS COMMON STOCK 74834L100 2,604 135 5.47 297 50.00 0.0149
2020-04-17 2020-03-31 13F QUEST DIAGNOSTICS COMMON STOCK 74834L100 2,469 -50 -1.98 198 -26.39 0.0121
2020-01-21 2019-12-31 13F QUEST DIAGNOSTICS COMMON STOCK 74834L100 2,519 -300 -10.64 269 -10.93 0.0138
2019-10-28 2019-09-30 13F QUEST DIAGNOSTICS COMMON STOCK 74834L100 2,819 -15 -0.53 302 3.07 0.0170
2019-07-12 2019-06-30 13F QUEST DIAGNOSTICS COMMON STOCK 74834L100 2,834 285 11.18 293 27.95 0.0167
2019-04-26 2019-03-31 13F QUEST DIAGNOSTICS COMMON STOCK 74834L100 2,549 50 2.00 229 10.10 0.0137
2019-01-08 2018-12-31 13F QUEST DIAGNOSTICS COMMON STOCK 74834L100 2,499 300 13.64 208 -12.61 0.0138
2018-10-04 2018-09-30 13F QUEST DIAGNOSTICS COMMON STOCK 74834L100 2,199 0 0.00 238 -1.24 0.0138
2018-07-09 2018-06-30 13F QUEST DIAGNOSTICS COMMON STOCK 74834L100 2,199 0 0.00 241 9.55 0.0154
2018-04-04 2018-03-31 13F QUEST DIAGNOSTICS COMMON STOCK 74834L100 2,199 250 12.83 220 14.58 0.0140
2018-01-23 2017-12-31 13F QUEST DIAGNOSTICS COMMON STOCK 74834L100 1,949 -50 -2.50 192 2.67 0.0117
2017-10-17 2017-09-30 13F QUEST DIAGNOSTICS COMMON STOCK 74834L100 1,999 -100 -4.76 187 -19.74 0.0121
2017-07-14 2017-06-30 13F QUEST DIAGNOSTICS COMMON STOCK 74834L100 2,099 55 2.69 233 16.50 0.0154
2017-04-06 2017-03-31 13F QUEST DIAGNOSTICS COMMON STOCK 74834L100 2,044 -196 -8.75 200 -2.91 0.0133
2017-01-24 2016-12-31 13F QUEST DIAGNOSTICS COMMON STOCK 74834L100 2,240 -15 -0.67 206 7.85 0.0142
2016-10-24 2016-09-30 13F QUEST DIAGNOSTICS COMMON STOCK 74834L100 2,255 -75 -3.22 191 1.06 0.0139
2016-08-08 2016-06-30 13F QUEST DIAGNOSTICS COMMON STOCK 74834L100 2,330 -25 -1.06 189 12.50 0.0141
2016-04-11 2016-03-31 13F QUEST DIAGNOSTICS COMMON STOCK 74834L100 2,355 -350 -12.94 168 -12.50 0.0133
2016-01-21 2015-12-31 13F QUEST DIAGNOSTICS COMMON STOCK 74834L100 2,705 -165 -5.75 192 9.09 0.0159
2015-10-14 2015-09-30 13F QUEST DIAGNOSTICS COMMON STOCK 74834L100 2,870 0 0.00 176 -15.79 0.0153
2015-07-28 2015-06-30 13F QUEST DIAGNOSTICS COMMON STOCK 74834L100 2,870 -10 -0.35 209 -5.43 0.0164
2015-04-09 2015-03-31 13F QUEST DIAGNOSTICS COMMON STOCK 74834L100 2,880 -25 -0.86 221 13.33 0.0178
2015-01-16 2014-12-31 13F QUEST DIAGNOSTICS COMMON STOCK 74834L100 2,905 250 9.42 195 21.12 0.0159
2014-10-23 2014-09-30 13F QUEST DIAGNOSTICS COMMON STOCK 74834L100 2,655 0 0.00 161 4.55 0.0128
2014-05-07 2014-03-31 13F QUEST DIAGNOSTICS COMMON STOCK 74834L100 2,655 -5,039 -65.49 154 -62.62 0.0127
2014-01-27 2013-12-31 13F QUEST DIAGNOSTICS COMMON STOCK 74834L100 7,694 -970 -11.20 412 -23.13 0.0345
2013-10-24 2013-09-30 13F QUEST DIAGNOSTICS COMMON STOCK 74834L100 8,664 550 6.78 536 8.94 0.0485
2013-08-13 2013-06-30 13F QUEST DIAGNOSTICS COMMON STOCK 74834L100 8,114 8,114 492 0.0467
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.