Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionHills Bank & Trust Co
Latest Disclosed Ownership5,493 shares
Latest Disclosed Value $ 660,753
Hills Bank & Trust Co reports 25.61% increase in ownership of MRK / Merck & Co., Inc.

On May 1, 2026 - Hills Bank & Trust Co filed a 13F-HR form disclosing ownership of 5,493 shares of Merck & Co., Inc. (MX:MRK) valued at $660,753 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 4,373 shares of Merck & Co., Inc.. This represents a change in shares of 25.61% 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.

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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)
2026-05-01 2026-03-31 13F MERCK COM 58933Y105 5,493 1,120 25.61 661 43.48 0.0307
2026-02-05 2025-12-31 13F MERCK COM 58933Y105 4,373 1,584 56.79 460 96.58 0.0268
2025-11-13 2025-09-30 13F MERCK COM 58933Y105 2,789 0 0.00 234 6.36 0.0138
2025-08-05 2025-06-30 13F MERCK COM 58933Y105 2,789 -47 -1.66 221 -13.39 0.0139
2025-04-25 2025-03-31 13F MERCK COM 58933Y105 2,836 -47 -1.63 255 -11.19 0.0179
2025-02-10 2024-12-31 13F Merck COM 58933Y105 2,883 -8 -0.28 287 -12.80 0.0216
2024-10-28 2024-09-30 13F Merck COM 58933Y105 2,891 -50 -1.70 328 -9.89 0.0248
2024-07-25 2024-06-30 13F Merck COM 58933Y105 2,941 0 0.00 364 -6.19 0.0295
2024-05-08 2024-03-31 13F Merck COM 58933Y105 2,941 1,219 70.79 388 107.49 0.0329
2024-02-07 2023-12-31 13F Merck COM 58933Y105 1,722 0 0.00 188 5.65 0.0184
2023-10-26 2023-09-30 13F Merck COM 58933Y105 1,722 -118 -6.41 177 -16.51 0.0206
2023-07-21 2023-06-30 13F Merck COM 58933Y105 1,840 0 0.00 212 8.72 0.0273
2023-04-17 2023-03-31 13F Merck COM 58933Y105 1,840 -248 -11.88 196 0.0271
2023-02-06 2022-12-31 13F Merck COM 58933Y105 2,088 55 2.71 0 -100.00 0.0343
2022-11-03 2022-09-30 13F Merck COM 58933Y105 2,033 0 0.00 175 -5.41 0.0258
2022-08-02 2022-06-30 13F Merck COM 58933Y105 2,033 -475 -18.94 185 -9.76 0.0301
2022-08-16 2022-03-31 13F/A-1 Merck COM 58933Y105 2,508 -544 -17.82 205 -12.39 0.0292
2022-04-29 2022-03-31 13F Merck COM 58933Y105 2,508 -544 205 0.0216
2022-04-29 2022-03-31 13F Merck COM 58933Y105 115 9
2022-02-04 2021-12-31 13F Merck COM 58933Y105 3,052 333 12.25 234 14.71 0.0321
2021-10-27 2021-09-30 13F Merck COM 58933Y105 2,719 160 6.25 204 2.51 0.0308
2021-08-02 2021-06-30 13F Merck COM 58933Y105 2,559 -2,776 -52.03 199 -51.58 0.0302
2021-05-03 2021-03-31 13F Merck COM 58933Y105 5,335 -389 -6.80 411 -12.18 0.0667
2021-02-01 2020-12-31 13F Merck COM 58933Y105 5,724 -106 -1.82 468 -3.11 0.0818
2020-10-27 2020-09-30 13F Merck COM 58933Y105 5,830 -258 -4.24 483 2.55 0.0945
2020-08-05 2020-06-30 13F Merck COM 58933Y105 6,088 224 3.82 471 4.43 0.0995
2020-04-17 2020-03-31 13F MERCK COMMON STOCK 58933Y105 5,864 29 0.50 451 -15.07 0.1328
2020-01-27 2019-12-31 13F MERCK COMMON STOCK 58933Y105 5,835 -25 -0.43 531 7.71 0.1252
2019-10-18 2019-09-30 13F MERCK COMMON STOCK 58933Y105 5,860 118 2.06 493 2.28 0.1243
2019-07-16 2019-06-30 13F MERCK COMMON STOCK 58933Y105 5,742 -134 -2.28 482 -1.23 0.1247
2019-04-17 2019-03-31 13F MERCK COMMON STOCK 58933Y105 5,876 5,876 488 0.1313
2018-04-13 2018-03-31 13F MERCK COMMON STOCK 58933Y105 0 -5,666 -100.00 0 -100.00
2018-01-16 2017-12-31 13F MERCK COMMON STOCK 58933Y105 5,666 -100 -1.73 318 -13.82 0.0932
2017-10-16 2017-09-30 13F MERCK COMMON STOCK 58933Y105 5,766 -284 -4.69 369 -4.65 0.1158
2017-07-12 2017-06-30 13F MERCK COMMON STOCK 58933Y105 6,050 -475 -7.28 387 -6.52 0.1252
2017-04-06 2017-03-31 13F MERCK COMMON STOCK 58933Y105 6,525 -250 -3.69 414 3.76 0.1405
2017-01-18 2016-12-31 13F MERCK COMMON STOCK 58933Y105 6,775 -1,175 -14.78 399 -19.56 0.1402
2016-10-11 2016-09-30 13F MERCK COMMON STOCK 58933Y105 7,950 -5,735 -41.91 496 -37.14 0.1791
2016-07-18 2016-06-30 13F MERCK COMMON STOCK 58933Y105 13,685 -1,620 -10.58 789 -2.47 0.2905
2016-04-25 2016-03-31 13F MERCK COMMON STOCK 58933Y105 15,305 2,960 23.98 809 24.08 0.2986
2016-01-19 2015-12-31 13F MERCK COMMON STOCK 58933Y105 12,345 8,270 202.94 652 224.38 0.2467
2015-10-16 2015-09-30 13F MERCK COMMON STOCK 58933Y105 4,075 4,075 201 0.0794
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.