Quest Diagnostics Incorporated
US ˙ NYSE ˙ US74834L1008

SecurityDGX / Quest Diagnostics Incorporated
InstitutionFifth Third Bancorp
Latest Disclosed Ownership35,096 shares
Latest Disclosed Value $ 6,878,112
Fifth Third Bancorp reports 295.98% increase in ownership of DGX / Quest Diagnostics Incorporated

On May 1, 2026 - Fifth Third Bancorp filed a 13F-HR form disclosing ownership of 35,096 shares of Quest Diagnostics Incorporated (US:DGX) valued at $6,878,114 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 8,863 shares of Quest Diagnostics Incorporated. This represents a change in shares of 295.98% during the quarter. The current value of the position is $6,797,042 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-01 2026-03-31 13F QUEST DIAGNOSTICS COM 74834L100 35,096 26,233 295.98 6,878 347.50 0.0126
2026-02-02 2025-12-31 13F QUEST DIAGNOSTICS COM 74834L100 8,863 -720 -7.51 1,538 -15.83 0.0049
2025-11-07 2025-09-30 13F QUEST DIAGNOSTICS COM 74834L100 9,583 -62 -0.64 1,826 5.43 0.0058
2025-07-15 2025-06-30 13F QUEST DIAGNOSTICS COM 74834L100 9,645 -198 -2.01 1,733 4.02 0.0060
2025-04-15 2025-03-31 13F QUEST DIAGNOSTICS COM 74834L100 9,843 5,167 110.50 1,665 136.17 0.0063
2025-01-21 2024-12-31 13F QUEST DIAGNOSTICS COM 74834L100 4,676 1,009 27.52 705 23.90 0.0026
2024-10-17 2024-09-30 13F QUEST DIAGNOSTICS COM 74834L100 3,667 60 1.66 569 15.42 0.0021
2024-07-22 2024-06-30 13F QUEST DIAGNOSTICS COM 74834L100 3,607 475 15.17 494 18.51 0.0019
2024-04-23 2024-03-31 13F QUEST DIAGNOSTICS COM 74834L100 3,132 46 1.49 417 -2.12 0.0016
2024-01-19 2023-12-31 13F QUEST DIAGNOSTICS COM 74834L100 3,086 -16 -0.52 425 12.43 0.0018
2023-10-31 2023-09-30 13F QUEST DIAGNOSTICS COM 74834L100 3,102 -525 -14.47 378 -25.74 0.0018
2023-07-26 2023-06-30 13F QUEST DIAGNOSTICS COM 74834L100 3,627 437 13.70 510 12.86 0.0023
2023-04-24 2023-03-31 13F QUEST DIAGNOSTICS COM 74834L100 3,190 322 11.23 451 0.67 0.0021
2023-01-25 2022-12-31 13F QUEST DIAGNOSTICS COM 74834L100 2,868 125 4.56 449 32.94 0.0022
2022-10-25 2022-09-30 13F QUEST DIAGNOSTICS COM 74834L100 2,743 -257 -8.57 337 -15.54 0.0018
2022-08-04 2022-06-30 13F QUEST DIAGNOSTICS COM 74834L100 3,000 -1,547 -34.02 399 -35.85 0.0019
2022-04-19 2022-03-31 13F QUEST DIAGNOSTICS COM 74834L100 4,547 37 0.82 622 -20.26 0.0025
2022-02-01 2021-12-31 13F QUEST DIAGNOSTICS COM 74834L100 4,510 1,908 73.33 780 106.35 0.0030
2021-10-15 2021-09-30 13F QUEST DIAGNOSTICS COM 74834L100 2,602 281 12.11 378 23.53 0.0016
2021-08-06 2021-06-30 13F QUEST DIAGNOSTICS COM 74834L100 2,321 168 7.80 306 10.87 0.0013
2021-05-07 2021-03-31 13F QUEST DIAGNOSTICS COM 74834L100 2,153 21 0.98 276 8.66 0.0013
2021-02-16 2020-12-31 13F QUEST DIAGNOSTICS COM 74834L100 2,132 375 21.34 254 26.37 0.0012
2020-11-09 2020-09-30 13F QUEST DIAGNOSTICS COM 74834L100 1,757 69 4.09 201 4.69 0.0011
2020-08-05 2020-06-30 13F QUEST DIAGNOSTICS COM 74834L100 1,688 -274 -13.97 192 21.52 0.0012
2020-05-05 2020-03-31 13F QUEST DIAGNOSTICS COM 74834L100 1,962 -753 -27.73 158 -45.52 0.0011
2020-02-14 2019-12-31 13F QUEST DIAGNOSTICS COM 74834L100 2,715 289 11.91 290 11.54 0.0016
2019-11-14 2019-09-30 13F QUEST DIAGNOSTICS COM 74834L100 2,426 -754 -23.71 260 -19.75 0.0016
2019-08-07 2019-06-30 13F QUEST DIAGNOSTICS COM 74834L100 3,180 -257 -7.48 324 4.85 0.0020
2019-05-14 2019-03-31 13F QUEST DIAGNOSTICS COM 74834L100 3,437 587 20.60 309 30.38 0.0020
2019-02-14 2018-12-31 13F QUEST DIAGNOSTICS COM 74834L100 2,850 235 8.99 237 -15.96 0.0017
2018-11-14 2018-09-30 13F QUEST DIAGNOSTICS COM 74834L100 2,615 2,158 472.21 282 464.00 0.0018
2018-08-14 2018-06-30 13F QUEST DIAGNOSTICS COM 74834L100 457 31 7.28 50 16.28 0.0003
2018-05-15 2018-03-31 13F QUEST DIAGNOSTICS COM 74834L100 426 287 206.47 43 207.14 0.0003
2018-02-14 2017-12-31 13F QUEST DIAGNOSTICS COM 74834L100 139 -58 -29.44 14 -22.22 0.0001
2017-11-14 2017-09-30 13F QUEST DIAGNOSTICS COM 74834L100 197 92 87.62 18 50.00 0.0001
2017-08-11 2017-06-30 13F QUEST DIAGNOSTICS COM 74834L100 105 -45 -30.00 12 -20.00 0.0001
2017-05-12 2017-03-31 13F QUEST DIAGNOSTICS COM 74834L100 150 -39 -20.63 15 -11.76 0.0001
2017-02-13 2016-12-31 13F/A-1 QUEST DIAGNOSTICS COM 74834L100 189 39 26.00 17 30.77 0.0001
2017-02-09 2016-12-31 13F QUEST DIAGNOSTICS COM 74834L100 150 0 13 0.0001
2016-11-10 2016-09-30 13F QUEST DIAGNOSTICS COM 74834L100 150 -2,821 -94.95 13 -94.63 0.0001
2016-08-11 2016-06-30 13F QUEST DIAGNOSTICS COM 74834L100 2,971 -5,754 -65.95 242 -61.16 0.0021
2016-05-13 2016-03-31 13F QUEST DIAGNOSTICS COM 74834L100 8,725 -132 -1.49 623 -1.11 0.0054
2016-02-16 2015-12-31 13F QUEST DIAGNOSTICS COM 74834L100 8,857 -263 -2.88 630 12.30 0.0055
2015-11-13 2015-09-30 13F QUEST DIAGNOSTICS COM 74834L100 9,120 -5,827 -38.98 561 -48.25 0.0052
2015-08-14 2015-06-30 13F QUEST DIAGNOSTICS COM 74834L100 14,947 -28 -0.19 1,084 -5.82 0.0095
2015-05-14 2015-03-31 13F QUEST DIAGNOSTICS COM 74834L100 14,975 5,603 59.78 1,151 83.28 0.0100
2015-02-13 2014-12-31 13F QUEST DIAGNOSTICS COM 74834L100 9,372 8,621 1,147.94 628 1,265.22 0.0054
2014-11-17 2014-09-30 13F QUEST DIAGNOSTICS COM 74834L100 751 40 5.63 46 9.52 0.0004
2014-08-14 2014-06-30 13F QUEST DIAGNOSTICS COM 74834L100 711 -50 -6.57 42 -4.55 0.0004
2014-05-15 2014-03-31 13F QUEST DIAGNOSTICS COM 74834L100 761 -298 -28.14 44 -22.81 0.0004
2014-02-14 2013-12-31 13F QUEST DIAGNOSTICS COM 74834L100 1,059 432 68.90 57 46.15 0.0006
2013-11-14 2013-09-30 13F QUEST DIAGNOSTICS COM 74834L100 627 -6 -0.95 39 2.63 0.0004
2013-08-14 2013-06-30 13F QUEST DIAGNOSTICS COM 74834L100 633 633 38 0.0004
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.