Quest Diagnostics Incorporated
US ˙ NYSE ˙ US74834L1008

SecurityDGX / Quest Diagnostics Incorporated
InstitutionSignaturefd, Llc
Latest Disclosed Ownership1,699 shares
Latest Disclosed Value $ 332,970
Signaturefd, Llc reports 3.72% increase in ownership of DGX / Quest Diagnostics Incorporated

On April 7, 2026 - Signaturefd, Llc filed a 13F-HR form disclosing ownership of 1,699 shares of Quest Diagnostics Incorporated (US:DGX) valued at $332,970 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 20, 2026 disclosing 1,638 shares of Quest Diagnostics Incorporated. This represents a change in shares of 3.72% during the quarter. The current value of the position is $340,293 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)
2026-04-07 2026-03-31 13F QUEST DIAGNOSTICS COM 74834L100 1,699 61 3.72 333 16.90 0.0051
2026-01-20 2025-12-31 13F QUEST DIAGNOSTICS COM 74834L100 1,638 -6 -0.36 284 -9.27 0.0043
2025-10-21 2025-09-30 13F QUEST DIAGNOSTICS COM 74834L100 1,644 -130 -7.33 313 -1.57 0.0049
2025-07-16 2025-06-30 13F QUEST DIAGNOSTICS COM 74834L100 1,774 118 7.13 319 13.57 0.0054
2025-05-02 2025-03-31 13F QUEST DIAGNOSTICS COM 74834L100 1,656 -89 -5.10 280 6.46 0.0053
2025-02-10 2024-12-31 13F QUEST DIAGNOSTICS COM 74834L100 1,745 222 14.58 263 11.44 0.0050
2024-10-21 2024-09-30 13F QUEST DIAGNOSTICS COM 74834L100 1,523 -50 -3.18 236 9.77 0.0045
2024-07-29 2024-06-30 13F QUEST DIAGNOSTICS COM 74834L100 1,573 235 17.56 215 20.79 0.0044
2024-05-03 2024-03-31 13F QUEST DIAGNOSTICS COM 74834L100 1,338 -36 -2.62 178 -5.82 0.0038
2024-02-01 2023-12-31 13F QUEST DIAGNOSTICS COM 74834L100 1,374 418 43.72 189 62.93 0.0044
2023-11-03 2023-09-30 13F QUEST DIAGNOSTICS COM 74834L100 956 -504 -34.52 116 -43.41 0.0030
2023-08-01 2023-06-30 13F QUEST DIAGNOSTICS COM 74834L100 1,460 433 42.16 205 41.38 0.0052
2023-04-28 2023-03-31 13F QUEST DIAGNOSTICS COM 74834L100 1,027 -147 -12.52 145 -20.77 0.0040
2023-01-30 2022-12-31 13F QUEST DIAGNOSTICS COM 74834L100 1,174 43 3.80 184 31.65 0.0054
2022-11-08 2022-09-30 13F QUEST DIAGNOSTICS COM 74834L100 1,131 -58 -4.88 139 -12.03 0.0048
2022-08-10 2022-06-30 13F QUEST DIAGNOSTICS COM 74834L100 1,189 89 8.09 158 4.64 0.0054
2022-05-02 2022-03-31 13F QUEST DIAGNOSTICS COM 74834L100 1,100 36 3.38 151 -17.93 0.0045
2022-01-25 2021-12-31 13F QUEST DIAGNOSTICS COM 74834L100 1,064 74 7.47 184 27.78 0.0057
2021-10-28 2021-09-30 13F QUEST DIAGNOSTICS COM 74834L100 990 103 11.61 144 23.08 0.0050
2021-07-26 2021-06-30 13F QUEST DIAGNOSTICS COM 74834L100 887 17 1.95 117 4.46 0.0047
2021-04-30 2021-03-31 13F QUEST DIAGNOSTICS COM 74834L100 870 318 57.61 112 69.70 0.0050
2021-02-11 2020-12-31 13F QUEST DIAGNOSTICS COM 74834L100 552 9 1.66 66 6.45 0.0031
2020-11-03 2020-09-30 13F QUEST DIAGNOSTICS COM 74834L100 543 14 2.65 62 3.33 0.0033
2020-07-30 2020-06-30 13F QUEST DIAGNOSTICS COM 74834L100 529 -224 -29.75 60 0.00 0.0036
2020-04-23 2020-03-31 13F QUEST DIAGNOSTICS COM 74834L100 753 11 1.48 60 -24.05 0.0052
2020-02-05 2019-12-31 13F QUEST DIAGNOSTICS COM 74834L100 742 28 3.92 79 3.95 0.0058
2019-10-16 2019-09-30 13F QUEST DIAGNOSTICS COM 74834L100 714 98 15.91 76 20.63 0.0062
2019-07-31 2019-06-30 13F QUEST DIAGNOSTICS COM 74834L100 616 111 21.98 63 40.00 0.0054
2019-05-09 2019-03-31 13F QUEST DIAGNOSTICS COM 74834L100 505 216 74.74 45 87.50 0.0038
2019-02-13 2018-12-31 13F QUEST DIAGNOSTICS COM 74834L100 289 -635 -68.72 24 -76.00 0.0022
2018-11-14 2018-09-30 13F QUEST DIAGNOSTICS COM 74834L100 924 -10 -1.07 100 -2.91 0.0102
2018-08-14 2018-06-30 13F QUEST DIAGNOSTICS COM 74834L100 934 -43 -4.40 103 5.10 0.0115
2018-05-08 2018-03-31 13F QUEST DIAGNOSTICS COM 74834L100 977 977 98 0.0115
2017-02-14 2016-12-31 13F QUEST DIAGNOSTICS COM 74834L100 0 -541 -100.00 0 -100.00
2016-11-14 2016-09-30 13F QUEST DIAGNOSTICS COM 74834L100 541 400 283.69 46 318.18 0.0067
2016-07-29 2016-06-30 13F QUEST DIAGNOSTICS COM 74834L100 141 -1 -0.70 11 10.00 0.0016
2016-05-12 2016-03-31 13F QUEST DIAGNOSTICS COM 74834L100 142 2 1.43 10 0.00 0.0017
2016-01-22 2015-12-31 13F QUEST DIAGNOSTICS COM 74834L100 140 118 536.36 10 900.00 0.0019
2015-10-23 2015-09-30 13F QUEST DIAGNOSTICS COM 74834L100 22 22 0.00 1 0.0002
2015-04-15 2015-03-31 13F QUEST DIAGNOSTICS COM 74834L100 0 -86 -100.00 0 -100.00
2015-02-13 2014-12-31 13F QUEST DIAGNOSTICS COM 74834L100 86 0 0.00 6 20.00 0.0015
2014-11-13 2014-09-30 13F QUEST DIAGNOSTICS COM 74834L100 86 0 0.00 5 0.00 0.0016
2014-08-14 2014-06-30 13F QUEST DIAGNOSTICS COM 74834L100 86 0 0.00 5 0.00 0.0017
2014-05-16 2014-03-31 13F QUEST DIAGNOSTICS COM 74834L100 86 0 0.00 5 0.00 0.0020
2014-02-11 2013-12-31 13F QUEST DIAGNOSTICS COM 74834L100 86 86 5 0.0018
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.