Quest Diagnostics Incorporated
US ˙ NYSE ˙ US74834L1008

SecurityDGX / Quest Diagnostics Incorporated
InstitutionPinnacle Associates Ltd
Latest Disclosed Ownership12,825 shares
Latest Disclosed Value $ 2,513,409
Pinnacle Associates Ltd reports 0.18% increase in ownership of DGX / Quest Diagnostics Incorporated

On April 21, 2026 - Pinnacle Associates Ltd filed a 13F-HR form disclosing ownership of 12,825 shares of Quest Diagnostics Incorporated (US:DGX) valued at $2,513,444 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 12,802 shares of Quest Diagnostics Incorporated. This represents a change in shares of 0.18% during the quarter. The current value of the position is $2,483,818 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)
2026-04-21 2026-03-31 13F QUEST DIAGNOSTICS COM 74834L100 12,825 23 0.18 2,513 13.15 0.0322
2026-02-05 2025-12-31 13F QUEST DIAGNOSTICS COM 74834L100 12,802 115 0.91 2,221 -8.11 0.0285
2025-11-13 2025-09-30 13F QUEST DIAGNOSTICS COM 74834L100 12,687 401 3.26 2,418 9.56 0.0321
2025-08-04 2025-06-30 13F QUEST DIAGNOSTICS COM 74834L100 12,286 -364 -2.88 2,207 3.08 0.0320
2025-05-06 2025-03-31 13F QUEST DIAGNOSTICS COM 74834L100 12,650 465 3.82 2,140 16.43 0.0314
2025-02-14 2024-12-31 13F QUEST DIAGNOSTICS COM 74834L100 12,185 183 1.52 1,838 11.12 0.0249
2024-10-25 2024-09-30 13F QUEST DIAGNOSTICS COM 74834L100 12,002 -50 -0.41 1,655 0.30 0.0281
2024-07-30 2024-06-30 13F QUEST DIAGNOSTICS COM 74834L100 12,052 158 1.33 1,650 4.17 0.0258
2024-04-26 2024-03-31 13F QUEST DIAGNOSTICS COM 74834L100 11,894 -108 -0.90 1,583 -4.29 0.0250
2024-01-19 2023-12-31 13F QUEST DIAGNOSTICS COM 74834L100 12,002 69 0.58 1,655 13.76 0.0278
2023-10-24 2023-09-30 13F QUEST DIAGNOSTICS COM 74834L100 11,933 -335 -2.73 1,454 -15.66 0.0270
2023-07-27 2023-06-30 13F QUEST DIAGNOSTICS COM 74834L100 12,268 215 1.78 1,724 1.11 0.0299
2023-05-05 2023-03-31 13F QUEST DIAGNOSTICS COM 74834L100 12,053 -48 -0.40 1,705 -9.93 0.0349
2023-02-01 2022-12-31 13F/A-1 QUEST DIAGNOSTICS COM 74834L100 12,101 12 0.10 1,893 27.65 0.0413
2023-01-25 2022-12-31 13F QUEST DIAGNOSTICS COM 74834L100 12,101 12 1,804 0.0000
2022-11-01 2022-09-30 13F QUEST DIAGNOSTICS COM 74834L100 12,089 134 1.12 1,483 -6.73 0.0340
2022-08-02 2022-06-30 13F QUEST DIAGNOSTICS COM 74834L100 11,955 -311 -2.54 1,590 -5.30 0.0347
2022-05-05 2022-03-31 13F QUEST DIAGNOSTICS COM 74834L100 12,266 4 0.03 1,679 -20.84 0.0297
2022-02-02 2021-12-31 13F QUEST DIAGNOSTICS COM 74834L100 12,262 -21 -0.17 2,121 18.82 0.0366
2021-10-19 2021-09-30 13F QUEST DIAGNOSTICS COM 74834L100 12,283 -21 -0.17 1,785 9.91 0.0329
2021-08-02 2021-06-30 13F QUEST DIAGNOSTICS COM 74834L100 12,304 404 3.39 1,624 6.35 0.0294
2021-05-12 2021-03-31 13F QUEST DIAGNOSTICS COM 74834L100 11,900 -84 -0.70 1,527 6.93 0.0291
2021-01-26 2020-12-31 13F QUEST DIAGNOSTICS COM 74834L100 11,984 -1,680 -12.30 1,428 -8.70 0.0290
2020-10-23 2020-09-30 13F QUEST DIAGNOSTICS COM 74834L100 13,664 716 5.53 1,564 5.96 0.0371
2020-08-14 2020-06-30 13F QUEST DIAGNOSTICS COM 74834L100 12,948 5 0.04 1,476 42.06 0.0364
2020-05-13 2020-03-31 13F QUEST DIAGNOSTICS COM 74834L100 12,943 -750 -5.48 1,039 -28.93 0.0316
2020-02-03 2019-12-31 13F QUEST DIAGNOSTICS COM 74834L100 13,693 729 5.62 1,462 5.41 0.0320
2019-11-08 2019-09-30 13F QUEST DIAGNOSTICS COM 74834L100 12,964 -249 -1.88 1,387 3.12 0.0327
2019-08-05 2019-06-30 13F QUEST DIAGNOSTICS COM 74834L100 13,213 -96 -0.72 1,345 12.36 0.0315
2019-05-10 2019-03-31 13F QUEST DIAGNOSTICS COM 74834L100 13,309 -245 -1.81 1,197 6.02 0.0270
2019-02-05 2018-12-31 13F QUEST DIAGNOSTICS COM 74834L100 13,554 216 1.62 1,129 -21.54 0.0291
2018-11-09 2018-09-30 13F QUEST DIAGNOSTICS COM 74834L100 13,338 -1,033 -7.19 1,439 -8.92 0.0299
2018-08-08 2018-06-30 13F QUEST DIAGNOSTICS COM 74834L100 14,371 -196 -1.35 1,580 8.15 0.0325
2018-05-11 2018-03-31 13F QUEST DIAGNOSTICS COM 74834L100 14,567 -8,270 -36.21 1,461 -35.04 0.0286
2018-02-12 2017-12-31 13F QUEST DIAGNOSTICS COM 74834L100 22,837 -1,896 -7.67 2,249 -2.89 0.0432
2017-11-13 2017-09-30 13F QUEST DIAGNOSTICS COM 74834L100 24,733 171 0.70 2,316 -15.16 0.0427
2017-08-09 2017-06-30 13F QUEST DIAGNOSTICS COM 74834L100 24,562 -196 -0.79 2,730 12.30 0.0525
2017-05-09 2017-03-31 13F QUEST DIAGNOSTICS COM 74834L100 24,758 377 1.55 2,431 8.48 0.0464
2017-02-10 2016-12-31 13F QUEST DIAGNOSTICS COM 74834L100 24,381 -17,497 -41.78 2,241 -36.77 0.0452
2016-11-14 2016-09-30 13F QUEST DIAGNOSTICS COM 74834L100 41,878 -126 -0.30 3,544 3.63 0.0711
2016-08-15 2016-06-30 13F QUEST DIAGNOSTICS COM 74834L100 42,004 238 0.57 3,420 14.61 0.0737
2016-05-13 2016-03-31 13F QUEST DIAGNOSTICS COM 74834L100 41,766 -1,220 -2.84 2,984 -2.42 0.0638
2016-02-11 2015-12-31 13F/A-1 QUEST DIAGNOSTICS COM 74834L100 42,986 -833 -1.90 3,058 13.51 0.0642
2016-02-09 2015-12-31 13F QUEST DIAGNOSTICS COM 74834L100 42,986 -833 3,058 0.0653
2015-11-10 2015-09-30 13F QUEST DIAGNOSTICS COM 74834L100 43,819 -538 -1.21 2,694 -16.26 0.0596
2015-08-12 2015-06-30 13F QUEST DIAGNOSTICS COM 74834L100 44,357 182 0.41 3,217 -5.24 0.0597
2015-05-15 2015-03-31 13F Quest Diagnostics COM 74834L100 44,175 -343 -0.77 3,395 13.74 0.0633
2015-02-12 2014-12-31 13F Quest Diagnostics COM 74834L100 44,518 417 0.95 2,985 11.55 0.0585
2014-11-12 2014-09-30 13F Quest Diagnostics COM 74834L100 44,101 -193 -0.44 2,676 2.92 0.0545
2014-08-14 2014-06-30 13F Quest Diagnostics COM 74834L100 44,294 21,364 93.17 2,600 95.78 0.0508
2014-05-14 2014-03-31 13F Quest Diagnostics COM 74834L100 22,930 2,250 10.88 1,328 19.96 0.0259
2014-02-12 2013-12-31 13F Quest Diagnostics COM 74834L100 20,680 622 3.10 1,107 -10.65 0.0216
2013-11-14 2013-09-30 13F Quest Diagnostics COM 74834L100 20,058 12,615 169.49 1,239 174.72 0.0256
2013-08-13 2013-06-30 13F Quest Diagnostics COM 74834L100 7,443 7,443 451 0.0101
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.