Quest Diagnostics 통합
US ˙ NYSE ˙ US74834L1008

SecurityDGX / Quest Diagnostics Incorporated
InstitutionAtwater Malick LLC
Latest Disclosed Ownership30,316 shares
Latest Disclosed Value $ 5,941,330
Atwater Malick LLC reports 14.20% decrease in ownership of DGX / Quest Diagnostics Incorporated

On April 22, 2026 - Atwater Malick LLC filed a 13F-HR form disclosing ownership of 30,316 shares of Quest Diagnostics Incorporated (US:DGX) valued at $5,941,330 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 35,333 shares of Quest Diagnostics Incorporated. This represents a change in shares of -14.20% during the quarter. The current value of the position is $6,071,992 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)
2026-04-22 2026-03-31 13F QUEST DIAGNOSTICS COM 74834L100 30,316 -5,017 -14.20 5,941 -3.10 1.6047
2026-01-23 2025-12-31 13F QUEST DIAGNOSTICS COM 74834L100 35,333 -7,609 -17.72 6,131 -25.08 1.6906
2025-10-23 2025-09-30 13F QUEST DIAGNOSTICS COM 74834L100 42,942 -13,724 -24.22 8,184 -19.60 2.3764
2025-07-21 2025-06-30 13F QUEST DIAGNOSTICS COM 74834L100 56,666 18 0.03 10,179 6.20 3.2237
2025-04-11 2025-03-31 13F QUEST DIAGNOSTICS COM 74834L100 56,648 1,512 2.74 9,585 15.23 3.2427
2025-01-15 2024-12-31 13F QUEST DIAGNOSTICS COM 74834L100 55,136 -473 -0.85 8,318 -3.66 2.7866
2024-10-10 2024-09-30 13F QUEST DIAGNOSTICS COM 74834L100 55,609 670 1.22 8,633 14.80 2.7784
2024-07-17 2024-06-30 13F QUEST DIAGNOSTICS COM 74834L100 54,939 190 0.35 7,520 3.20 2.5906
2024-04-16 2024-03-31 13F QUEST DIAGNOSTICS COM 74834L100 54,749 779 1.44 7,288 -2.07 2.5681
2024-01-11 2023-12-31 13F QUEST DIAGNOSTICS COM 74834L100 53,970 1,244 2.36 7,441 15.81 2.9165
2023-10-17 2023-09-30 13F QUEST DIAGNOSTICS COM 74834L100 52,726 634 1.22 6,425 -12.25 2.8282
2023-07-17 2023-06-30 13F QUEST DIAGNOSTICS COM 74834L100 52,092 1,715 3.40 7,322 2.74 3.1280
2023-04-19 2023-03-31 13F QUEST DIAGNOSTICS COM 74834L100 50,377 734 1.48 7,127 -8.23 3.3423
2023-02-14 2022-12-31 13F QUEST DIAGNOSTICS COM 74834L100 49,643 845 1.73 7,766 29.71 3.8265
2022-11-02 2022-09-30 13F QUEST DIAGNOSTICS COM 74834L100 48,798 1,264 2.66 5,987 -5.28 3.3453
2022-07-21 2022-06-30 13F QUEST DIAGNOSTICS COM 74834L100 47,534 1,110 2.39 6,321 -0.52 3.3255
2022-04-08 2022-03-31 13F QUEST DIAGNOSTICS COM 74834L100 46,424 2,342 5.31 6,354 -16.69 3.0682
2022-01-21 2021-12-31 13F QUEST DIAGNOSTICS COM 74834L100 44,082 706 1.63 7,627 21.01 3.5412
2021-10-14 2021-09-30 13F QUEST DIAGNOSTICS COM 74834L100 43,376 977 2.30 6,303 12.65 3.3304
2021-07-26 2021-06-30 13F QUEST DIAGNOSTICS COM 74834L100 42,399 2,944 7.46 5,595 10.49 3.0949
2021-05-21 2021-03-31 13F QUEST DIAGNOSTICS COM 74834L100 39,455 -2,081 -5.01 5,064 2.30 3.1099
2021-01-20 2020-12-31 13F QUEST DIAGNOSTICS COM 74834L100 41,536 395 0.96 4,950 5.10 3.1112
2020-10-13 2020-09-30 13F QUEST DIAGNOSTICS COM 74834L100 41,141 745 1.84 4,710 2.30 3.2983
2020-07-23 2020-06-30 13F QUEST DIAGNOSTICS COM 74834L100 40,396 1,831 4.75 4,604 48.66 3.6238
2020-04-24 2020-03-31 13F QUEST DIAGNOSTICS COM 74834L100 38,565 2,517 6.98 3,097 -19.56 2.9738
2020-01-07 2019-12-31 13F QUEST DIAGNOSTICS COM 74834L100 36,048 1,399 4.04 3,850 3.83 3.0606
2019-10-15 2019-09-30 13F QUEST DIAGNOSTICS COM 74834L100 34,649 1,575 4.76 3,708 10.13 3.1146
2019-07-11 2019-06-30 13F QUEST DIAGNOSTICS COM 74834L100 33,074 894 2.78 3,367 16.34 3.0891
2019-04-12 2019-03-31 13F QUEST DIAGNOSTICS COM 74834L100 32,180 3,447 12.00 2,894 20.94 2.8314
2019-03-21 2018-12-31 13F QUEST DIAGNOSTICS COM 74834L100 28,733 28,733 2,393 2.6780
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.