Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionRound Hill Asset Management
Latest Disclosed Ownership72,015 shares
Latest Disclosed Value $ 8,662,684
Round Hill Asset Management reports 1.00% decrease in ownership of MRK / Merck & Co., Inc.

On May 14, 2026 - Round Hill Asset Management filed a 13F-HR form disclosing ownership of 72,015 shares of Merck & Co., Inc. (MX:MRK) valued at $8,662,684 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 72,739 shares of Merck & Co., Inc.. This represents a change in shares of -1.00% 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)
2026-05-14 2026-03-31 13F MERCK COM 58933Y105 72,015 -724 -1.00 8,663 13.14 5.6741
2026-02-12 2025-12-31 13F MERCK COM 58933Y105 72,739 -2,526 -3.36 7,657 21.22 4.8249
2025-11-12 2025-09-30 13F MERCK COM 58933Y105 75,265 0 0.00 6,317 6.03 4.1586
2025-08-13 2025-06-30 13F MERCK COM 58933Y105 75,265 -1,035 -1.36 5,958 -13.01 4.0232
2025-05-13 2025-03-31 13F MERCK COM 58933Y105 76,300 4,365 6.07 6,849 -4.30 4.9250
2025-02-13 2024-12-31 13F MERCK COM 58933Y105 71,935 -500 -0.69 7,156 -13.00 5.0467
2024-11-12 2024-09-30 13F MERCK COM 58933Y105 72,435 -500 -0.69 8,226 -8.90 5.4442
2024-08-12 2024-06-30 13F MERCK COM 58933Y105 72,935 -2,780 -3.67 9,029 -9.62 5.7592
2024-05-13 2024-03-31 13F MERCK COM 58933Y105 75,715 -13,040 -14.69 9,991 3.25 6.0478
2024-02-13 2023-12-31 13F MERCK COM 58933Y105 88,755 -1,640 -1.81 9,676 3.98 6.0758
2023-11-14 2023-09-30 13F MERCK COM 58933Y105 90,395 -2,152 -2.33 9,306 -12.85 6.1186
2023-08-14 2023-06-30 13F MERCK COM 58933Y105 92,547 -1,245 -1.33 10,679 7.02 6.6002
2023-05-12 2023-03-31 13F MERCK COM 58933Y105 93,792 -1,940 -2.03 9,979 -6.05 6.2226
2023-02-13 2022-12-31 13F MERCK COM 58933Y105 95,732 -705 -0.73 10,621 27.89 6.5658
2022-11-14 2022-09-30 13F MERCK COM 58933Y105 96,437 -156 -0.16 8,305 -5.69 5.6421
2022-08-11 2022-06-30 13F MERCK COM 58933Y105 96,593 -275 -0.28 8,806 10.80 5.3899
2022-05-16 2022-03-31 13F MERCK COM 58933Y105 96,868 -50 -0.05 7,948 7.00 4.1885
2022-02-11 2021-12-31 13F MERCK COM 58933Y105 96,918 -250 -0.26 7,428 1.78 3.7263
2021-11-12 2021-09-30 13F MERCK COM 58933Y105 97,168 -660 -0.67 7,298 -4.09 3.6633
2021-08-12 2021-06-30 13F MERCK COM 58933Y105 97,828 0 0.00 7,609 0.92 3.7308
2021-05-13 2021-03-31 13F MERCK COM 58933Y105 97,828 -179 -0.18 7,540 -5.95 3.9909
2021-02-12 2020-12-31 13F MERCK COM 58933Y105 98,007 -255 -0.26 8,017 -1.74 4.4946
2020-11-13 2020-09-30 13F MERCK COM 58933Y105 98,262 -481 -0.49 8,159 6.75 4.9394
2020-08-13 2020-06-30 13F MERCK COM 58933Y105 98,743 -1,075 -1.08 7,643 -0.21 4.8300
2020-05-14 2020-03-31 13F MERCK COM 58933Y105 99,818 -1,700 -1.67 7,659 -17.04 5.3563
2020-02-13 2019-12-31 13F MERCK COM 58933Y105 101,518 -533 -0.52 9,232 7.46 5.0209
2019-11-13 2019-09-30 13F MERCK COM 58933Y105 102,051 -290 -0.28 8,591 0.10 4.9992
2019-08-13 2019-06-30 13F MERCK COM 58933Y105 102,341 -270 -0.26 8,582 0.59 4.9555
2019-05-13 2019-03-31 13F MERCK COM 58933Y105 102,611 -929 -0.90 8,532 7.81 5.1247
2019-02-14 2018-12-31 13F MERCK and COM 58933Y105 103,540 -78 -0.08 7,914 7.66 5.2605
2018-11-13 2018-09-30 13F MERCK and COM 58933Y105 103,618 2,200 2.17 7,351 17.04 4.3417
2018-08-13 2018-06-30 13F MERCK and COM 58933Y105 101,418 -4,230 -4.00 6,281 9.14 3.8921
2018-05-15 2018-03-31 13F MERCK and COM 58933Y105 105,648 -2,710 -2.50 5,755 -5.72 3.4768
2018-02-13 2017-12-31 13F MERCK and CO. COM 58933Y105 108,358 -150 -0.14 6,104 -12.15 3.4682
2017-11-13 2017-09-30 13F MERCK and COM 58933Y105 108,508 -125 -0.12 6,948 -0.20 3.9618
2017-08-11 2017-06-30 13F MERCK COM 58933Y105 108,633 -900 -0.82 6,962 0.03 3.9911
2017-05-15 2017-03-31 13F MERCK and COM 58933Y105 109,533 0 0.00 6,960 7.94 3.9569
2017-02-15 2016-12-31 13F MERCK and COM 58933Y105 109,533 109,533 6,448 3.8040
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.