Quest Diagnostics Incorporated
DE ˙ DB ˙ US74834L1008
€ 168,05 ↑1.90 (1.14%)
2026-06-05
PREÇO DA AÇÃO
SecurityDE:QDI / Quest Diagnostics Incorporated
InstitutionJanus Henderson Group Plc
Latest Disclosed Ownership10,393 shares
Latest Disclosed Value $ 2,036,145
Janus Henderson Group Plc reports 25.44% decrease in ownership of QDI / Quest Diagnostics Incorporated

On May 18, 2026 - Janus Henderson Group Plc filed a 13F-HR/A form disclosing ownership of 10,393 shares of Quest Diagnostics Incorporated (DE:QDI) valued at $1,783,439 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 13,939 shares of Quest Diagnostics Incorporated. This represents a change in shares of -25.44% during the quarter. The current value of the position is $1,746,544 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)
2026-05-18 2026-03-31 13F/A-1 QUEST DIAGNOSTICS COM 74834L100 10,393 -3,546 -25.44 2,036 -15.80 0.0003
2026-05-15 2026-03-31 13F QUEST DIAGNOSTICS COM 74834L100 10,393 -3,546 2,036 0.0004
2026-02-17 2025-12-31 13F QUEST DIAGNOSTICS COM 74834L100 13,939 -179 -1.27 2,418 -10.14 0.0011
2025-11-14 2025-09-30 13F QUEST DIAGNOSTICS COM 74834L100 14,118 1,782 14.45 2,692 21.54 0.0012
2025-08-14 2025-06-30 13F QUEST DIAGNOSTICS COM 74834L100 12,336 -9,336 -43.08 2,214 -38.94 0.0011
2025-05-15 2025-03-31 13F QUEST DIAGNOSTICS COM 74834L100 21,672 7,990 58.40 3,626 75.59 0.0020
2025-02-14 2024-12-31 13F QUEST DIAGNOSTICS COM 74834L100 13,682 -21,725 -61.36 2,065 -62.43 0.0010
2024-11-14 2024-09-30 13F QUEST DIAGNOSTICS COM 74834L100 35,407 -691 -1.91 5,497 11.28 0.0028
2024-08-14 2024-06-30 13F QUEST DIAGNOSTICS COM 74834L100 36,098 -1,207 -3.24 4,940 -0.54 0.0026
2024-05-15 2024-03-31 13F QUEST DIAGNOSTICS COM 74834L100 37,305 20,800 126.02 4,966 118.29 0.0027
2024-02-14 2023-12-31 13F QUEST DIAGNOSTICS COM 74834L100 16,505 -30,735 -65.06 2,275 -60.48 0.0014
2023-11-14 2023-09-30 13F QUEST DIAGNOSTICS COM 74834L100 47,240 -1,924 -3.91 5,757 -16.69 0.0038
2023-08-14 2023-06-30 13F QUEST DIAGNOSTICS COM 74834L100 49,164 -201,562 -80.39 6,910 -80.52 0.0043
2023-05-15 2023-03-31 13F QUEST DIAGNOSTICS COM 74834L100 250,726 -315,645 -55.73 35,472 -59.96 0.0234
2023-02-14 2022-12-31 13F QUEST DIAGNOSTICS COM 74834L100 566,371 -61,578 -9.81 88,602 15.00 0.0633
2023-01-13 2022-09-30 13F/A-1 QUEST DIAGNOSTICS COM 74834L100 627,949 -22,566 -3.47 77,045 -10.94 0.0577
2022-11-14 2022-09-30 13F QUEST DIAGNOSTICS COM 74834L100 627,949 -22,566 77,045 0.0577
2022-08-15 2022-06-30 13F QUEST DIAGNOSTICS COM 74834L100 650,515 -281,625 -30.21 86,505 -32.19 0.0596
2022-05-16 2022-03-31 13F QUEST DIAGNOSTICS COM 74834L100 932,140 -398,051 -29.92 127,573 -44.57 0.0616
2022-02-14 2021-12-31 13F QUEST DIAGNOSTICS COM 74834L100 1,330,191 -177,913 -11.80 230,138 5.02 0.0960
2021-11-16 2021-09-30 13F QUEST DIAGNOSTICS COM 74834L100 1,508,104 -108,528 -6.71 219,142 2.72 0.0958
2021-08-16 2021-06-30 13F QUEST DIAGNOSTICS COM 74834L100 1,616,632 -88,615 -5.20 213,347 -2.52 0.0913
2021-05-17 2021-03-31 13F QUEST DIAGNOSTICS COM 74834L100 1,705,247 316,001 22.75 218,853 32.19 0.0999
2021-02-16 2020-12-31 13F QUEST DIAGNOSTICS COM 74834L100 1,389,246 55,728 4.18 165,557 8.44 0.0769
2020-11-16 2020-09-30 13F QUEST DIAGNOSTICS COM 74834L100 1,333,518 -264,433 -16.55 152,674 -16.16 0.0796
2020-08-14 2020-06-30 13F QUEST DIAGNOSTICS COM 74834L100 1,597,951 599,125 59.98 182,104 127.05 0.1022
2020-05-14 2020-03-31 13F QUEST DIAGNOSTICS COM 74834L100 998,826 -88,293 -8.12 80,206 -30.91 0.0552
2020-02-18 2019-12-31 13F QUEST DIAGNOSTICS COM 74834L100 1,087,119 48,542 4.67 116,093 4.44 0.0594
2019-11-14 2019-09-30 13F QUEST DIAGNOSTICS COM 74834L100 1,038,577 -100,426 -8.82 111,159 -4.14 0.0602
2019-07-31 2019-06-30 13F QUEST DIAGNOSTICS COM 74834L100 1,139,003 -96,884 -7.84 115,961 4.35 0.0631
2019-04-30 2019-03-31 13F QUEST DIAGNOSTICS COM 74834L100 1,235,887 279,397 29.21 111,131 39.53 0.0616
2019-02-06 2018-12-31 13F QUEST DIAGNOSTICS COM 74834L100 956,490 753,638 371.52 79,647 263.85 0.0508
2018-11-09 2018-09-30 13F QUEST DIAGNOSTICS COM 74834L100 202,852 44,808 28.35 21,890 25.98 0.0117
2018-08-10 2018-06-30 13F QUEST DIAGNOSTICS COM 74834L100 158,044 -446,410 -73.85 17,376 -71.34 0.0099
2018-05-14 2018-03-31 13F QUEST DIAGNOSTICS COM 74834L100 604,454 -827,231 -57.78 60,626 -57.00 0.0357
2018-03-12 2017-12-31 13F/A-1 QUEST DIAGNOSTICS COM 74834L100 1,431,685 -369,792 -20.53 141,007 -16.41 0.0868
2018-02-09 2017-12-31 13F QUEST DIAGNOSTICS COM 74834L100 1,431,685 -369,792 141,007
2017-11-14 2017-09-30 13F QUEST DIAGNOSTICS COM 74834L100 1,801,477 349,703 24.09 168,690 4.53 0.1081
2017-08-17 2017-06-30 13F/A-1 QUEST DIAGNOSTICS COM 74834L100 1,451,774 1,436,412 9,350.42 161,379 10,601.53 0.1100
2017-08-14 2017-06-30 13F QUEST DIAGNOSTICS COM 74834L100 1,451,774 1,436,412 161,379
2017-05-03 2017-03-31 13F QUEST DIAGNOSTICS COM 74834L100 15,362 500 3.36 1,508 10.40 0.0106
2017-01-30 2016-12-31 13F QUEST DIAGNOSTICS COM 74834L100 14,862 1,788 13.68 1,366 23.51 0.0101
2016-10-24 2016-09-30 13F QUEST DIAGNOSTICS COM 74834L100 13,074 0 0.00 1,106 3.95 0.0082
2016-07-29 2016-06-30 13F QUEST DIAGNOSTICS COM 74834L100 13,074 -9,323 -41.63 1,064 -33.50 0.0088
2016-05-12 2016-03-31 13F QUEST DIAGNOSTICS COM 74834L100 22,397 0 0.00 1,600 0.44 0.0130
2016-02-03 2015-12-31 13F QUEST DIAGNOSTICS COM 74834L100 22,397 0 0.00 1,593 15.77 0.0128
2015-11-16 2015-09-30 13F QUEST DIAGNOSTICS COM 74834L100 22,397 0 0.00 1,376 -15.27 0.0121
2015-08-17 2015-06-30 13F QUEST DIAGNOSTICS COM 74834L100 22,397 0 0.00 1,624 -5.64 0.0128
2015-06-02 2015-03-31 13F/A-1 QUEST DIAGNOSTICS COM 74834L100 22,397 0 0.00 1,721 14.58 0.0133
2015-05-15 2015-03-31 13F QUEST DIAGNOSTICS COM 74834L100 22,397 1,721
2015-02-12 2014-12-31 13F QUEST DIAGNOSTICS COM 74834L100 22,397 0 0.00 1,502 10.52 0.0108
2014-11-12 2014-09-30 13F QUEST DIAGNOSTICS COM 74834L100 22,397 0 0.00 1,359 3.42 0.0128
2014-08-13 2014-06-30 13F QUEST DIAGNOSTICS COM 74834L100 22,397 2,199 10.89 1,314 12.31 0.0123
2014-05-08 2014-03-31 13F QUEST DIAGNOSTICS COM 74834L100 20,198 1,542 8.27 1,170 17.12 0.0114
2014-01-14 2013-12-31 13F QUEST DIAGNOSTICS COM 74834L100 18,656 0 0.00 999 -13.36 0.0101
2013-11-12 2013-09-30 13F QUEST DIAGNOSTICS COM 74834L100 18,656 0 0.00 1,153 2.22 0.0127
2013-08-15 2013-06-30 13F QUEST DIAGNOSTICS COM 74834L100 18,656 18,656 1,128 0.0132
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.