Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionPeapack Gladstone Financial Corp
Latest Disclosed Ownership564,709 shares
Latest Disclosed Value $ 67,928
Peapack Gladstone Financial Corp reports 0.58% decrease in ownership of MRK / Merck & Co., Inc.

On May 15, 2026 - Peapack Gladstone Financial Corp filed a 13F-HR form disclosing ownership of 564,709 shares of Merck & Co., Inc. (MX:MRK) valued at $67,928 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 567,975 shares of Merck & Co., Inc.. This represents a change in shares of -0.58% during the quarter.

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)
2026-05-15 2026-03-31 13F MERCK COM 58933Y105 564,709 -3,266 -0.58 68 13.56 0.8689
2026-02-10 2025-12-31 13F MERCK COM 58933Y105 567,975 2,094 0.37 60 25.53 0.7530
2025-11-14 2025-09-30 13F MERCK COM 58933Y105 565,881 -32,701 -5.46 47 0.00 0.6186
2025-08-14 2025-06-30 13F MERCK COM 58933Y105 598,582 -25,432 -4.08 47 -16.07 0.6705
2025-05-12 2025-03-31 13F MERCK COM 58933Y105 624,014 -74,951 -10.72 56 -18.84 0.8313
2025-02-13 2024-12-31 13F MERCK COM 58933Y105 698,965 -3,781 -0.54 70 -12.66 1.0087
2024-11-26 2024-09-30 13F MERCK COM 58933Y105 702,746 -2,094 -0.30 80 -9.20 1.1506
2024-08-13 2024-06-30 13F MERCK COM 58933Y105 704,840 -6,507 -0.91 87 -6.45 1.3409
2024-05-10 2024-03-31 13F MERCK COM 58933Y105 711,347 14,139 2.03 94 22.37 1.4676
2024-02-13 2023-12-31 13F MERCK COM 58933Y105 697,208 -9,110 -1.29 76 5.56 1.2794
2023-11-14 2023-09-30 13F MERCK COM 58933Y105 706,318 -1,052 -0.15 73 -11.11 1.3457
2023-08-14 2023-06-30 13F MERCK COM 58933Y105 707,370 -18,114 -2.50 82 5.19 1.4546
2023-05-15 2023-03-31 13F MERCK COM 58933Y105 725,484 -4,114 -0.56 77 -99.90 1.4721
2023-02-14 2022-12-31 13F MERCK COM 58933Y105 729,598 -13,140 -1.77 80,949 26.55 1.5943
2022-11-14 2022-09-30 13F MERCK COM 58933Y105 742,738 47,247 6.79 63,965 0.88 1.3044
2022-08-12 2022-06-30 13F MERCK COM 58933Y105 695,491 12,325 1.80 63,407 13.04 1.4493
2022-05-16 2022-03-31 13F MERCK COM 58933Y105 683,166 8,510 1.26 56,092 8.48 1.0988
2022-02-15 2021-12-31 13F MERCK COM 58933Y105 674,656 1,293 0.19 51,706 2.23 0.9765
2021-11-15 2021-09-30 13F MERCK COM 58933Y105 673,363 111,043 19.75 50,576 15.65 1.0455
2021-08-16 2021-06-30 13F MERCK COM 58933Y105 562,320 24,402 4.54 43,732 5.46 1.0483
2021-05-14 2021-03-31 13F MERCK & CO. COM 58933Y105 537,918 18,664 3.59 41,468 -2.37 1.0704
2021-02-16 2020-12-31 13F MERCK & CO. COM 58933Y105 519,254 -66,785 -11.40 42,474 -12.63 1.2702
2020-11-16 2020-09-30 13F MERCK COMMON STOCK 58933Y105 586,039 567,268 3,022.04 48,612 3,247.93 1.7659
2020-11-16 2020-09-30 13F Merck & Co Inc COMMON STOCK 589331107 19,572 -564,594 1,623 0.0590
2020-08-14 2020-06-30 13F Merck & Co Inc COMMON STOCK 589331107 18,771 1,440 8.31 1,452 8.93 0.0575
2020-08-14 2020-06-30 13F MERCK COMMON STOCK 58933Y105 584,166 222 45,173 1.7883
2020-05-15 2020-03-31 13F Merck & Co Inc COMMON STOCK 589331107 17,331 -542,051 -96.90 1,333 -97.38 0.0629
2020-05-15 2020-03-31 13F MERCK COMMON STOCK 58933Y105 583,944 24,562 44,928 2.1200
2020-02-14 2019-12-31 13F MERCK COMMON STOCK 58933Y105 559,382 -6,847 -1.21 50,876 6.74 2.0448
2019-11-13 2019-09-30 13F MERCK COMMON STOCK 58933Y105 566,229 -3,161 -0.56 47,665 -0.16 2.0484
2019-08-15 2019-06-30 13F MERCK COMMON STOCK 58933Y105 569,390 10,995 1.97 47,743 2.80 2.0700
2019-05-15 2019-03-31 13F MERCK COMMON STOCK 58933Y105 558,395 -983 -0.18 46,441 8.65 2.0992
2019-02-14 2018-12-31 13F MERCK COMMON STOCK 58933Y105 559,378 153,060 37.67 42,742 48.29 2.1853
2018-11-14 2018-09-30 13F MERCK COMMON STOCK 58933Y105 406,318 8,426 2.12 28,824 19.34 1.4070
2018-08-09 2018-06-30 13F MERCK COMMON STOCK 58933Y105 397,892 15,376 4.02 24,152 15.92 1.2597
2018-05-10 2018-03-31 13F MERCK DOMESTIC COMMON STOCKS 58933Y105 382,516 -8,537 -2.18 20,836 -5.31 1.1270
2018-02-14 2017-12-31 13F MERCK DOMESTIC COMMON STOCKS 58933Y105 391,053 8,260 2.16 22,005 -10.22 1.1812
2017-11-14 2017-09-30 13F MERCK DOMESTIC COMMON STOCKS 58933Y105 382,793 -13,965 -3.52 24,510 -3.61 1.4063
2017-08-14 2017-06-30 13F MERCK DOMESTIC COMMON STOCKS 58933Y105 396,758 13,663 3.57 25,428 4.47 1.5198
2017-05-10 2017-03-31 13F MERCK DOMESTIC COMMON STOCKS 58933Y105 383,095 -2,688 -0.70 24,342 7.18 1.4983
2017-02-14 2016-12-31 13F MERCK DOMESTIC COMMON STOCKS 58933Y105 385,783 3,699 0.97 22,711 -4.76 1.4725
2016-11-14 2016-09-30 13F MERCK DOMESTIC COMMON STOCKS 58933Y105 382,084 1,313 0.34 23,846 8.70 1.5943
2016-08-15 2016-06-30 13F MERCK DOMESTIC COMMON STOCKS 58933Y105 380,771 5,863 1.56 21,936 10.59 1.5139
2016-05-10 2016-03-31 13F MERCK DOMESTIC COMMON STOCKS 58933Y105 374,908 10,618 2.91 19,836 3.09 1.3923
2016-02-12 2015-12-31 13F MERCK DOMESTIC COMMON STOCKS 58933Y105 364,290 -5,192 -1.41 19,242 5.44 1.3503
2015-11-12 2015-09-30 13F MERCK DOMESTIC COMMON STOCKS 58933Y105 369,482 29,298 8.61 18,249 -5.77 1.3664
2015-08-13 2015-06-30 13F MERCK DOMESTIC COMMON STOCKS 58933Y105 340,184 6,516 1.95 19,367 0.98 1.3564
2015-05-13 2015-03-31 13F MERCK DOMESTIC COMMON STOCKS 58933Y105 333,668 -1,739 -0.52 19,179 0.69 1.3259
2015-02-12 2014-12-31 13F MERCK DOMESTIC COMMON STOCKS 58933Y105 335,407 5,584 1.69 19,048 -2.58 1.3419
2014-11-13 2014-09-30 13F/A-1 MERCK DOMESTIC COMMON STOCKS 58933Y105 329,823 7,326 2.27 19,552 4.80 1.4625
2014-11-12 2014-09-30 13F MERCK DOMESTIC COMMON STOCKS 58933Y105 322,497 18,656
2014-08-14 2014-06-30 13F MERCK DOMESTIC COMMON STOCKS 58933Y105 322,497 3,152 0.99 18,656 2.91 1.4017
2014-05-06 2014-03-31 13F MERCK DOMESTIC COMMON STOCKS 58933Y105 319,345 -2,747 -0.85 18,129 12.46 1.4305
2014-02-13 2013-12-31 13F MERCK DOMESTIC COMMON STOCKS 58933Y105 322,092 -1,450 -0.45 16,121 -99.90 1.2974
2013-11-14 2013-09-30 13F MERCK DOMESTIC COMMON STOCKS 58933Y105 323,542 -5,604 -1.70 15,403,511 0.75 1.3546
2013-08-13 2013-06-30 13F MERCK DOMESTIC COMMON STOCKS 58933Y105 329,146 329,146 15,288,832 1.3975
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.