Quest Diagnostics Incorporated
US ˙ NYSE ˙ US74834L1008

SecurityDGX / Quest Diagnostics Incorporated
InstitutionColdstream Capital Management Inc
Latest Disclosed Ownership13,948 shares
Latest Disclosed Value $ 2,733,476
Coldstream Capital Management Inc reports 17.79% decrease in ownership of DGX / Quest Diagnostics Incorporated

On May 8, 2026 - Coldstream Capital Management Inc filed a 13F-HR form disclosing ownership of 13,948 shares of Quest Diagnostics Incorporated (US:DGX) valued at $2,733,529 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 9, 2026 disclosing 16,967 shares of Quest Diagnostics Incorporated. This represents a change in shares of -17.79% during the quarter. The current value of the position is $2,701,309 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)
2026-05-08 2026-03-31 13F QUEST DIAGNOSTICS COM 74834L100 13,948 -3,019 -17.79 2,733 -7.17 0.0293
2026-02-09 2025-12-31 13F QUEST DIAGNOSTICS COM 74834L100 16,967 -66 -0.39 2,944 -9.30 0.0380
2025-11-19 2025-09-30 13F QUEST DIAGNOSTICS COM 74834L100 17,033 3 0.02 3,246 6.11 0.0437
2025-08-12 2025-06-30 13F QUEST DIAGNOSTICS COM 74834L100 17,030 -534 -3.04 3,059 2.96 0.0500
2025-05-13 2025-03-31 13F QUEST DIAGNOSTICS COM 74834L100 17,564 -1,224 -6.51 2,972 4.83 0.0633
2025-02-14 2024-12-31 13F QUEST DIAGNOSTICS COM 74834L100 18,788 797 4.43 2,834 1.43 0.0604
2024-11-18 2024-09-30 13F/A-1 QUEST DIAGNOSTICS COM 74834L100 17,991 744 4.31 2,795 18.39 0.0604
2024-11-18 2024-09-30 13F QUEST DIAGNOSTICS COM 74834L100 17,991 2,795
2024-08-07 2024-06-30 13F QUEST DIAGNOSTICS COM 74834L100 17,247 172 1.01 2,361 3.87 0.0575
2024-05-14 2024-03-31 13F QUEST DIAGNOSTICS COM 74834L100 17,075 3,112 22.29 2,273 18.03 0.0577
2024-02-09 2023-12-31 13F QUEST DIAGNOSTICS COM 74834L100 13,963 817 6.21 1,925 20.16 0.0539
2023-11-02 2023-09-30 13F QUEST DIAGNOSTICS COM 74834L100 13,146 -110 -0.83 1,602 -14.01 0.0523
2023-08-03 2023-06-30 13F QUEST DIAGNOSTICS COM 74834L100 13,256 0 0.00 1,863 -0.64 0.0590
2023-05-15 2023-03-31 13F QUEST DIAGNOSTICS COM 74834L100 13,256 195 1.49 1,876 -8.22 0.0630
2023-01-10 2022-12-31 13F QUEST DIAGNOSTICS COM 74834L100 13,061 185 1.44 2,043 19.26 0.0748
2022-08-08 2022-06-30 13F/A-1 QUEST DIAGNOSTICS COM 74834L100 12,876 526 4.26 1,713 1.36 0.0667
2022-08-08 2022-06-30 13F QUEST DIAGNOSTICS COM 74834L100 12,254 -96 1,630 0.0693
2022-05-11 2022-03-31 13F QUEST DIAGNOSTICS COM 74834L100 12,350 -4,633 -27.28 1,690 -42.48 0.0582
2022-02-11 2021-12-31 13F QUEST DIAGNOSTICS COM 74834L100 16,983 8,569 101.84 2,938 205.09 0.0922
2021-11-12 2021-09-30 13F QUEST DIAGNOSTICS COM 74834L100 8,414 -13,525 -61.65 963 -66.74 0.0467
2021-08-16 2021-06-30 13F QUEST DIAGNOSTICS COM 74834L100 21,939 12,519 132.90 2,895 139.45 0.1166
2021-06-16 2021-03-31 13F QUEST DIAGNOSTICS COM 74834L100 9,420 -70 -0.74 1,209 6.90 0.0708
2021-02-16 2020-12-31 13F QUEST DIAGNOSTICS COM 74834L100 9,490 1,394 17.22 1,131 22.01 0.0682
2020-11-16 2020-09-30 13F QUEST DIAGNOSTICS COM 74834L100 8,096 25 0.31 927 0.76 0.0772
2020-08-12 2020-06-30 13F QUEST DIAGNOSTICS COM 74834L100 8,071 -1,723 -17.59 920 17.05 0.0826
2020-05-27 2020-03-31 13F QUEST DIAGNOSTICS COM 74834L100 9,794 -131 -1.32 786 -25.78 0.0859
2020-02-13 2019-12-31 13F QUEST DIAGNOSTICS COM 74834L100 9,925 -330 -3.22 1,059 -3.55 0.0868
2019-11-15 2019-09-30 13F QUEST DIAGNOSTICS COM 74834L100 10,255 -188 -1.80 1,098 3.29 0.0925
2019-08-15 2019-06-30 13F QUEST DIAGNOSTICS COM 74834L100 10,443 -90 -0.85 1,063 12.25 0.0885
2019-05-10 2019-03-31 13F QUEST DIAGNOSTICS COM 74834L100 10,533 1,151 12.27 947 21.25 0.0828
2019-02-26 2018-12-31 13F QUEST DIAGNOSTICS COM 74834L100 9,382 539 6.10 781 -18.13 0.0758
2018-11-14 2018-09-30 13F QUEST DIAGNOSTICS COM 74834L100 8,843 1,023 13.08 954 11.06 0.0864
2018-08-14 2018-06-30 13F QUEST DIAGNOSTICS COM 74834L100 7,820 335 4.48 859 14.38 0.0868
2018-05-15 2018-03-31 13F QUEST DIAGNOSTICS COM 74834L100 7,485 688 10.12 751 12.26 0.0811
2018-02-14 2017-12-31 13F QUEST DIAGNOSTICS COM 74834L100 6,797 29 0.43 669 5.52 0.0726
2017-11-15 2017-09-30 13F QUEST DIAGNOSTICS COM 74834L100 6,768 68 1.01 634 -14.90 0.0738
2017-08-14 2017-06-30 13F QUEST DIAGNOSTICS COM 74834L100 6,700 505 8.15 745 22.53 0.0961
2017-05-09 2017-03-31 13F QUEST DIAGNOSTICS COM 74834L100 6,195 675 12.23 608 19.92 0.0840
2017-02-09 2016-12-31 13F QUEST DIAGNOSTICS COM 74834L100 5,520 5,520 507 0.0825
2016-11-14 2016-09-30 13F/A-1 QUEST DIAGNOSTICS COM 74834L100 0 -24,058 -100.00 0 -100.00
2016-08-09 2016-06-30 13F QUEST DIAGNOSTICS COM 74834L100 24,058 162 0.68 1,959 14.76 0.3471
2016-05-16 2016-03-31 13F QUEST DIAGNOSTICS COM 74834L100 23,896 23,896 0.00 1,707 0.3110
2016-02-04 2015-12-31 13F QUEST DIAGNOSTICS COM 74834L100 0 0 0 0.0000
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.