Quest Diagnostics Incorporated
US ˙ NYSE ˙ US74834L1008

SecurityDGX / Quest Diagnostics Incorporated
InstitutionBessemer Group Inc
Latest Disclosed Ownership3,816 shares
Latest Disclosed Value $ 747
Bessemer Group Inc reports 23.74% increase in ownership of DGX / Quest Diagnostics Incorporated

On May 6, 2026 - Bessemer Group Inc filed a 13F-HR form disclosing ownership of 3,816 shares of Quest Diagnostics Incorporated (US:DGX) valued at $747,860 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 3,084 shares of Quest Diagnostics Incorporated. The current value of the position is $764,307 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)
2026-05-06 2026-03-31 13F QUEST DIAGNOSTICS SC 74834L100 3,816 732 23.74 1 0.0012
2026-02-05 2025-12-31 13F QUEST DIAGNOSTICS SC 74834L100 3,084 -1 -0.03 1 0.0008
2025-11-05 2025-09-30 13F QUEST DIAGNOSTICS SC 74834L100 3,085 190 6.56 1 0.0009
2025-08-01 2025-06-30 13F QUEST DIAGNOSTICS SC 74834L100 2,895 -4,726 -62.01 1 -100.00 0.0008
2025-04-23 2025-03-31 13F QUEST DIAGNOSTICS SC 74834L100 7,621 -13,190 -63.38 1 -66.67 0.0023
2025-02-13 2024-12-31 13F QUEST DIAGNOSTICS SC 74834L100 20,811 65 0.31 3 0.00 0.0051
2024-11-12 2024-09-30 13F QUEST DIAGNOSTICS SC 74834L100 20,746 19,242 1,279.39 3 0.0053
2024-08-13 2024-06-30 13F QUEST DIAGNOSTICS SC 74834L100 1,504 -658,979 -99.77 0 -100.00 0.0004
2024-08-13 2024-03-31 13F/A-1 QUEST DIAGNOSTICS SC 74834L100 660,483 -238,118 -26.50 88 -29.27 0.1589
2024-05-13 2024-03-31 13F QUEST DIAGNOSTICS SC 74834L100 660,483 -238,118 88 0.1589
2024-02-09 2023-12-31 13F QUEST DIAGNOSTICS SC 74834L100 898,601 -5,270 -0.58 124 11.82 0.2414
2023-11-13 2023-09-30 13F QUEST DIAGNOSTICS SC 74834L100 903,871 -2,730 -0.30 110 -13.39 0.2418
2023-08-10 2023-06-30 13F QUEST DIAGNOSTICS SC 74834L100 906,601 3,520 0.39 127 0.00 0.2704
2023-05-10 2023-03-31 13F QUEST DIAGNOSTICS SC 74834L100 903,081 164,077 22.20 128 10.43 0.3033
2023-02-13 2022-12-31 13F QUEST DIAGNOSTICS SC 74834L100 739,004 8,208 1.12 116 -99.87 0.2816
2022-11-09 2022-09-30 13F QUEST DIAGNOSTICS SC 74834L100 730,796 8,311 1.15 89,662 -6.68 0.2340
2022-08-10 2022-06-30 13F QUEST DIAGNOSTICS SC 74834L100 722,485 15,367 2.17 96,077 -0.72 0.2396
2022-05-12 2022-03-31 13F QUEST DIAGNOSTICS SC 74834L100 707,118 8,299 1.19 96,775 -19.96 0.2030
2022-01-27 2021-12-31 13F QUEST DIAGNOSTICS SC 74834L100 698,819 16,183 2.37 120,902 21.89 0.2423
2021-11-12 2021-09-30 13F QUEST DIAGNOSTICS SC 74834L100 682,636 6,198 0.92 99,193 11.12 0.2115
2021-08-06 2021-06-30 13F QUEST DIAGNOSTICS SC 74834L100 676,438 28,417 4.39 89,270 7.34 0.1937
2021-05-13 2021-03-31 13F QUEST DIAGNOSTICS SC 74834L100 648,021 48,439 8.08 83,167 16.40 0.1993
2021-02-09 2020-12-31 13F QUEST DIAGNOSTICS SC 74834L100 599,582 -75,026 -11.12 71,451 -7.49 0.1888
2020-11-12 2020-09-30 13F QUEST DIAGNOSTICS SC 74834L100 674,608 -303,621 -31.04 77,236 -30.72 0.2282
2020-08-05 2020-06-30 13F QUEST DIAGNOSTICS SC 74834L100 978,229 14,182 1.47 111,480 44.01 0.3519
2020-04-30 2020-03-31 13F QUEST DIAGNOSTICS SC 74834L100 964,047 -322,281 -25.05 77,413 -43.64 0.3118
2020-02-04 2019-12-31 13F QUEST DIAGNOSTICS SC 74834L100 1,286,328 511,512 66.02 137,366 65.64 0.4447
2019-11-07 2019-09-30 13F QUEST DIAGNOSTICS SC 74834L100 774,816 3,905 0.51 82,929 5.66 0.2961
2019-07-19 2019-06-30 13F QUEST DIAGNOSTICS SC 74834L100 770,911 33,153 4.49 78,486 18.31 0.2644
2019-05-13 2019-03-31 13F QUEST DIAGNOSTICS SC 74834L100 737,758 73,604 11.08 66,339 19.95 0.2547
2019-05-21 2018-12-31 13F/A-1 QUEST DIAGNOSTICS SC 74834L100 664,154 -1,285,535 -65.94 55,304 -73.71 0.2409
2019-02-12 2018-12-31 13F QUEST DIAGNOSTICS SC 74834L100 664,154 -1,285,535 55,304 0.2408
2018-11-06 2018-09-30 13F QUEST DIAGNOSTICS SC 74834L100 1,949,689 -19,873 -1.01 210,391 -2.84 0.7833
2018-07-25 2018-06-30 13F QUEST DIAGNOSTICS SC 74834L100 1,969,562 -1,088 -0.06 216,534 9.55 0.8399
2018-05-10 2018-03-31 13F QUEST DIAGNOSTICS SC 74834L100 1,970,650 -137,146 -6.51 197,656 -4.79 0.7690
2018-01-30 2017-12-31 13F QUEST DIAGNOSTICS SC 74834L100 2,107,796 889,802 73.05 207,596 82.01 0.8057
2017-11-03 2017-09-30 13F QUEST DIAGNOSTICS SC 74834L100 1,217,994 -742,492 -37.87 114,055 -47.66 0.4550
2017-07-27 2017-06-30 13F QUEST DIAGNOSTICS SC 74834L100 1,960,486 -498,768 -20.28 217,927 -9.75 0.8782
2017-05-12 2017-03-31 13F QUEST DIAGNOSTICS SC 74834L100 2,459,254 52,036 2.16 241,474 9.15 1.0070
2017-02-07 2016-12-31 13F QUEST DIAGNOSTICS SC 74834L100 2,407,218 313,930 15.00 221,224 24.88 1.0190
2016-11-10 2016-09-30 13F QUEST DIAGNOSTICS SC 74834L100 2,093,288 170,210 8.85 177,155 13.16 0.8910
2016-08-11 2016-06-30 13F QUEST DIAGNOSTICS SC 74834L100 1,923,078 149,744 8.44 156,558 23.56 0.8585
2016-05-11 2016-03-31 13F QUEST DIAGNOSTICS SC 74834L100 1,773,334 -1,231 -0.07 126,705 0.37 0.7152
2016-02-12 2015-12-31 13F QUEST DIAGNOSTICS SC 74834L100 1,774,565 1,719,687 3,133.65 126,242 3,642.72 0.7030
2015-11-16 2015-09-30 13F QUEST DIAGNOSTICS SC 74834L100 54,878 -49 -0.09 3,373 -15.34 0.0193
2015-08-14 2015-06-30 13F QUEST DIAGNOSTICS SC 74834L100 54,927 25,009 83.59 3,984 73.29 0.0208
2015-06-18 2015-03-31 13F/A-1 QUEST DIAGNOSTICS SC 74834L100 29,918 7,168 31.51 2,299 50.66 0.0117
2015-05-14 2015-03-31 13F QUEST DIAGNOSTICS SC 74834L100 29,918 2,299
2015-02-17 2014-12-31 13F QUEST DIAGNOSTICS SC 74834L100 22,750 4,000 21.33 1,526 34.09 0.0082
2014-12-11 2014-09-30 13F/A-1 QUEST DIAGNOSTICS SC 74834L100 18,750 18,700 37,400.00 1,138 37,833.33 0.0065
2014-11-13 2014-09-30 13F QUEST DIAGNOSTICS SC 74834L100 50 0 3 0.0000
2014-08-13 2014-06-30 13F QUEST DIAGNOSTICS SC 74834L100 50 0 0.00 3 0.00 0.0000
2014-05-14 2014-03-31 13F QUEST DIAGNOSTICS SC 74834L100 50 -787,715 -99.99 3 -99.99 0.0000
2014-02-18 2013-12-31 13F QUEST DIAGNOSTICS SC 74834L100 787,765 525,715 200.62 42,177 160.48 0.3022
2013-11-08 2013-09-30 13F QUEST DIAGNOSTICS SC 74834L100 262,050 262,000 524,000.00 16,192 539,633.33 0.1314
2013-08-14 2013-06-30 13F QUEST DIAGNOSTICS SC 74834L100 50 50 3 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.