Quest Diagnostics Incorporated
DE ˙ DB ˙ US74834L1008
166,15 € ↑0,65 (0,39%)
2026-06-04
PREZZO DELLE AZIONI
SecurityDE:QDI / Quest Diagnostics Incorporated
InstitutionConning Inc.
Latest Disclosed Ownership175,906 shares
Latest Disclosed Value $ 34,474,058
Conning Inc. reports 1.53% increase in ownership of QDI / Quest Diagnostics Incorporated

On April 30, 2026 - Conning Inc. filed a 13F-HR form disclosing ownership of 175,906 shares of Quest Diagnostics Incorporated (DE:QDI) valued at $30,185,470 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 173,262 shares of Quest Diagnostics Incorporated. This represents a change in shares of 1.53% during the quarter. The current value of the position is $29,226,782 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)
2026-04-30 2026-03-31 13F QUEST DIAGNOSTICS COM 74834L100 175,906 2,644 1.53 34,474 14.66 1.1458
2026-02-05 2025-12-31 13F QUEST DIAGNOSTICS COM 74834L100 173,262 173,262 30,066 1.0067
2022-05-02 2022-03-31 13F QUEST DIAGNOSTICS COM 74834L100 0 -1,514 -100.00 0 -100.00
2022-01-27 2021-12-31 13F QUEST DIAGNOSTICS COM 74834L100 1,514 -57 -3.63 262 14.91 0.0070
2021-11-05 2021-09-30 13F QUEST DIAGNOSTICS COM 74834L100 1,571 -170 -9.76 228 -0.87 0.0065
2021-07-29 2021-06-30 13F QUEST DIAGNOSTICS COM 74834L100 1,741 -160 -8.42 230 -5.74 0.0067
2021-04-23 2021-03-31 13F QUEST DIAGNOSTICS COM 74834L100 1,901 -160 -7.76 244 -0.81 0.0073
2021-01-28 2020-12-31 13F QUEST DIAGNOSTICS COM 74834L100 2,061 -99 -4.58 246 -0.40 0.0078
2020-10-21 2020-09-30 13F QUEST DIAGNOSTICS COM 74834L100 2,160 20 0.93 247 1.23 0.0087
2020-08-07 2020-06-30 13F QUEST DIAGNOSTICS COM 74834L100 2,140 2,140 244 0.0091
2020-04-29 2020-03-31 13F QUEST DIAGNOSTICS COM 74834L100 0 -2,261 -100.00 0 -100.00
2020-01-29 2019-12-31 13F QUEST DIAGNOSTICS COM 74834L100 2,261 60 2.73 241 2.12 0.0079
2019-10-30 2019-09-30 13F QUEST DIAGNOSTICS COM 74834L100 2,201 -90 -3.93 236 1.29 0.0082
2019-07-25 2019-06-30 13F QUEST DIAGNOSTICS COM 74834L100 2,291 -7,087 -75.57 233 -72.36 0.0077
2019-04-22 2019-03-31 13F QUEST DIAGNOSTICS COM 74834L100 9,378 -10 -0.11 843 7.80 0.0263
2019-01-29 2018-12-31 13F QUEST DIAGNOSTICS COM 74834L100 9,388 -180 -1.88 782 -24.22 0.0266
2018-10-26 2018-09-30 13F QUEST DIAGNOSTICS COM 74834L100 9,568 -335 -3.38 1,032 -5.23 0.0306
2018-07-25 2018-06-30 13F QUEST DIAGNOSTICS COM 74834L100 9,903 -10 -0.10 1,089 9.56 0.0332
2018-05-03 2018-03-31 13F QUEST DIAGNOSTICS COM 74834L100 9,913 -670 -6.33 994 -4.61 0.0320
2018-01-30 2017-12-31 13F QUEST DIAGNOSTICS COM 74834L100 10,583 510 5.06 1,042 10.50 0.0344
2017-10-20 2017-09-30 13F QUEST DIAGNOSTICS COM 74834L100 10,073 -10 -0.10 943 -15.88 0.0321
2017-08-03 2017-06-30 13F QUEST DIAGNOSTICS COM 74834L100 10,083 -220 -2.14 1,121 10.77 0.0407
2017-04-27 2017-03-31 13F QUEST DIAGNOSTICS COM 74834L100 10,303 90 0.88 1,012 7.77 0.0374
2017-02-02 2016-12-31 13F QUEST DIAGNOSTICS COM 74834L100 10,213 -10 -0.10 939 8.55 0.0374
2016-10-25 2016-09-30 13F QUEST DIAGNOSTICS COM 74834L100 10,223 120 1.19 865 5.23 0.0345
2016-07-26 2016-06-30 13F QUEST DIAGNOSTICS COM 74834L100 10,103 10 0.10 822 14.01 0.0339
2016-04-26 2016-03-31 13F QUEST DIAGNOSTICS COM 74834L100 10,093 110 1.10 721 1.55 0.0303
2016-02-04 2015-12-31 13F QUEST DIAGNOSTICS COM 74834L100 9,983 -100 -0.99 710 14.52 0.0304
2015-10-23 2015-09-30 13F QUEST DIAGNOSTICS COM 74834L100 10,083 -420 -4.00 620 -18.64 0.0272
2015-08-03 2015-06-30 13F QUEST DIAGNOSTICS COM 74834L100 10,503 -140 -1.32 762 -6.85 0.0313
2015-04-24 2015-03-31 13F QUEST DIAGNOSTICS COM 74834L100 10,643 -20 -0.19 818 14.41 0.0348
2015-02-13 2014-12-31 13F QUEST DIAGNOSTICS COM 74834L100 10,663 -130 -1.20 715 9.16 0.0349
2014-11-07 2014-09-30 13F QUEST DIAGNOSTICS COM 74834L100 10,793 -220 -2.00 655 1.39 0.0343
2014-07-25 2014-06-30 13F QUEST DIAGNOSTICS COM 74834L100 11,013 -380 -3.34 646 -2.12 0.0343
2014-04-25 2014-03-31 13F QUEST DIAGNOSTICS COM 74834L100 11,393 100 0.89 660 9.09 0.0388
2014-02-04 2013-12-31 13F QUEST DIAGNOSTICS COM 74834L100 11,293 740 7.01 605 -7.21 0.0375
2013-11-04 2013-09-30 13F QUEST DIAGNOSTICS COM 74834L100 10,553 190 1.83 652 3.82 0.0503
2013-08-13 2013-06-30 13F QUEST DIAGNOSTICS COM 74834L100 10,363 10,363 628 0.0519
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.