Merck & Co., Inc.
BG ˙ BUL ˙ US58933Y1055
SecurityBG:6MK / Merck & Co., Inc.
InstitutionPapp L Roy & Associates
Latest Disclosed Ownership8,826 shares
Latest Disclosed Value $ 1,061,649
Papp L Roy & Associates reports 0.59% increase in ownership of 6MK / Merck & Co., Inc.

On April 14, 2026 - Papp L Roy & Associates filed a 13F-HR form disclosing ownership of 8,826 shares of Merck & Co., Inc. (BG:6MK) valued at $1,061,649 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 28, 2026 disclosing 8,774 shares of Merck & Co., Inc.. This represents a change in shares of 0.59% 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)
2026-04-14 2026-03-31 13F MERCK COM 58933Y105 8,826 52 0.59 1,062 14.95 0.1224
2026-01-28 2025-12-31 13F MERCK COM 58933Y105 8,774 428 5.13 924 31.86 0.1021
2025-10-09 2025-09-30 13F MERCK COM 58933Y105 8,346 -583 -6.53 700 -0.85 0.0787
2025-07-24 2025-06-30 13F MERCK COM 58933Y105 8,929 1 0.01 707 -11.86 0.0840
2025-04-10 2025-03-31 13F MERCK COM 58933Y105 8,928 -89 -0.99 801 -10.70 0.0983
2025-01-29 2024-12-31 13F MERCK COM 58933Y105 9,017 1 0.01 897 -12.32 0.1047
2024-10-24 2024-09-30 13F MERCK COM 58933Y105 9,016 0 0.00 1,024 -8.33 0.1239
2024-07-24 2024-06-30 13F MERCK COM 58933Y105 9,016 1 0.01 1,116 -6.14 0.1353
2024-04-15 2024-03-31 13F MERCK COM 58933Y105 9,015 -333 -3.56 1,190 16.68 0.1416
2024-01-19 2023-12-31 13F MERCK COM 58933Y105 9,348 -149 -1.57 1,019 4.30 0.1265
2023-10-19 2023-09-30 13F MERCK COM 58933Y105 9,497 21 0.22 978 -10.61 0.1325
2023-07-17 2023-06-30 13F MERCK COM 58933Y105 9,476 237 2.57 1,093 11.30 0.1405
2023-05-05 2023-03-31 13F MERCK COM 58933Y105 9,239 -229 -2.42 983 -6.48 0.1328
2023-01-17 2022-12-31 13F MERCK COM 58933Y105 9,468 -403 -4.08 1,050 23.53 0.1474
2022-10-21 2022-09-30 13F MERCK COM 58933Y105 9,871 101 1.03 850 -4.60 0.1285
2022-08-02 2022-06-30 13F MERCK COM 58933Y105 9,770 138 1.43 891 12.78 0.1292
2022-05-06 2022-03-31 13F MERCK COM 58933Y105 9,632 -29 -0.30 790 6.76 0.0986
2022-02-11 2021-12-31 13F MERCK COM 58933Y105 9,661 1 0.01 740 1.93 0.0847
2021-11-09 2021-09-30 13F MERCK COM 58933Y105 9,660 -399 -3.97 726 -7.16 0.0923
2021-08-09 2021-06-30 13F MERCK COM 58933Y105 10,059 866 9.42 782 10.30 0.0987
2021-05-06 2021-03-31 13F MERCK & CO. COM 58933Y105 9,193 -3,090 -25.16 709 -29.45 0.1018
2021-02-10 2020-12-31 13F MERCK & CO. COM 58933Y105 12,283 1 0.01 1,005 -1.37 0.1157
2020-11-13 2020-09-30 13F MERCK & CO. COM 58933Y105 12,282 1,931 18.66 1,019 27.38 0.1309
2020-08-11 2020-06-30 13F MERCK & CO. COM 58933Y105 10,351 126 1.23 800 1.65 0.1134
2020-05-05 2020-03-31 13F MERCK & CO. COM 58933Y105 10,225 701 7.36 787 -9.12 0.1437
2020-02-14 2019-12-31 13F MERCK COM 58933Y105 9,524 109 1.16 866 9.21 0.1247
2019-11-04 2019-09-30 13F MERCK COM 58933Y105 9,415 -350 -3.58 793 -3.17 0.1243
2019-08-14 2019-06-30 13F MERCK COM 58933Y105 9,765 1 0.01 819 0.86 0.1285
2019-05-09 2019-03-31 13F MERCK COM 58933Y105 9,764 -2,849 -22.59 812 -15.77 0.1461
2019-02-13 2018-12-31 13F MERCK COM 58933Y105 12,613 -404 -3.10 964 4.44 0.2015
2018-11-13 2018-09-30 13F MERCK COM 58933Y105 13,017 -132 -1.00 923 15.66 0.1647
2018-08-09 2018-06-30 13F MERCK COM 58933Y105 13,149 -3,071 -18.93 798 -9.73 0.1508
2018-05-14 2018-03-31 13F MERCK COM 58933Y105 16,220 4,677 40.52 884 36.00 0.1691
2018-02-06 2017-12-31 13F MERCK COM 58933Y105 11,543 437 3.93 650 -8.58 0.1285
2017-11-06 2017-09-30 13F MERCK COM 58933Y105 11,106 39 0.35 711 0.28 0.1537
2017-07-28 2017-06-30 13F MERCK COM 58933Y105 11,067 -2,199 -16.58 709 -15.90 0.1532
2017-05-11 2017-03-31 13F MERCK COM 58933Y105 13,266 -199 -1.48 843 6.31 0.1921
2017-02-08 2016-12-31 13F MERCK COM 58933Y105 13,465 0 0.00 793 -5.60 0.1816
2016-10-21 2016-09-30 13F MERCK COM 58933Y105 13,465 1 0.01 840 8.25 0.1949
2016-07-27 2016-06-30 13F MERCK COM 58933Y105 13,464 0 0.00 776 8.99 0.1832
2016-05-09 2016-03-31 13F MERCK & CO INC COM 58933Y105 13,464 490 3.78 712 3.94 0.1688
2016-02-02 2015-12-31 13F MERCK & CO INC COM 58933Y105 12,974 110 0.86 685 7.87 0.1677
2015-11-03 2015-09-30 13F MERCK & CO INC COM 58933Y105 12,864 1,615 14.36 635 -0.78 0.1570
2015-08-06 2015-06-30 13F MERCK & CO INC COM 58933Y105 11,249 15 0.13 640 -0.93 0.1455
2015-05-06 2015-03-31 13F MERCK & CO INC COM 58933Y105 11,234 11,234 0.00 646 0.1416
2015-02-05 2014-12-31 13F MERCK & CO INC COM 58933Y105 0 -11,138 -100.00 0 -100.00
2014-11-07 2014-09-30 13F MERCK & CO INC COM 58933Y105 11,138 0 0.00 660 2.48 0.1528
2014-08-01 2014-06-30 13F MERCK & CO INC COM 58933Y105 11,138 0 0.00 644 1.90 0.1449
2014-05-12 2014-03-31 13F MERCK & CO INC COM 58933Y105 11,138 -250 -2.20 632 10.88 0.1473
2014-02-05 2013-12-31 13F MERCK & CO INC COM 58933Y105 11,388 -250 -2.15 570 2.89 0.1230
2013-11-08 2013-09-30 13F MERCK & CO INC COM 58933Y105 11,638 1,900 19.51 554 22.57 0.1315
2013-08-09 2013-06-30 13F MERCK & CO INC COM 58933Y105 9,738 9,738 452 0.1124
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.