Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionWealthTrust Axiom LLC
Latest Disclosed Ownership40,712 shares
Latest Disclosed Value $ 4,897,217
WealthTrust Axiom LLC reports 0.01% increase in ownership of MRK / Merck & Co., Inc.

On May 11, 2026 - WealthTrust Axiom LLC filed a 13F-HR form disclosing ownership of 40,712 shares of Merck & Co., Inc. (MX:MRK) valued at $4,897,217 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 40,707 shares of Merck & Co., Inc.. This represents a change in shares of 0.01% 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)
2026-05-11 2026-03-31 13F MERCK COM 58933Y105 40,712 5 0.01 4,897 14.31 1.2049
2026-02-13 2025-12-31 13F MERCK COM 58933Y105 40,707 -34 -0.08 4,285 25.30 1.1023
2025-11-14 2025-09-30 13F MERCK COM 58933Y105 40,741 506 1.26 3,419 7.35 0.9160
2025-08-13 2025-06-30 13F MERCK COM 58933Y105 40,235 -1,659 -3.96 3,185 -15.29 0.9365
2025-05-14 2025-03-31 13F MERCK COM 58933Y105 41,894 -368 -0.87 3,760 -10.56 1.1450
2025-02-13 2024-12-31 13F MERCK COM 58933Y105 42,262 68 0.16 4,204 -12.25 1.2528
2024-11-13 2024-09-30 13F MERCK COM 58933Y105 42,194 -296 -0.70 4,792 -8.92 1.4198
2024-08-13 2024-06-30 13F MERCK COM 58933Y105 42,490 -297 -0.69 5,260 -6.82 1.7436
2024-05-10 2024-03-31 13F MERCK COM 58933Y105 42,787 -500 -1.16 5,646 19.62 1.8185
2024-02-05 2023-12-31 13F MERCK COM 58933Y105 43,287 592 1.39 4,719 7.37 1.5778
2023-11-03 2023-09-30 13F MERCK COM 58933Y105 42,695 -2,396 -5.31 4,396 -15.53 1.5806
2023-08-04 2023-06-30 13F MERCK COM 58933Y105 45,091 -96 -0.21 5,203 8.24 1.7260
2023-05-03 2023-03-31 13F MERCK COM 58933Y105 45,187 -1,056 -2.28 4,808 -6.30 1.6389
2023-01-31 2022-12-31 13F MERCK COM 58933Y105 46,243 4 0.01 5,131 28.83 1.7893
2022-11-03 2022-09-30 13F MERCK COM 58933Y105 46,239 4 0.01 3,982 -5.53 1.5175
2022-07-27 2022-06-30 13F MERCK COM 58933Y105 46,235 5 0.01 4,215 11.13 1.5018
2022-05-09 2022-03-31 13F MERCK COM 58933Y105 46,230 5 0.01 3,793 7.09 1.1846
2022-02-02 2021-12-31 13F MERCK COM 58933Y105 46,225 -721 -1.54 3,542 0.45 1.1320
2021-10-14 2021-09-30 13F MERCK COM 58933Y105 46,946 8 0.02 3,526 -3.40 1.1936
2021-07-22 2021-06-30 13F MERCK COM 58933Y105 46,938 600 1.29 3,650 2.18 1.1715
2021-04-14 2021-03-31 13F MERCK & CO. COM 58933Y105 46,338 5 0.01 3,572 -5.75 1.2084
2021-02-04 2020-12-31 13F MERCK & CO. COM 58933Y105 46,333 -355 -0.76 3,790 -2.12 1.3768
2020-10-21 2020-09-30 13F MERCK & CO. COM 58933Y105 46,688 2,700 6.14 3,872 13.85 1.6681
2020-07-31 2020-06-30 13F MERCK & CO. COM 58933Y105 43,988 -489 -1.10 3,401 -0.61 1.4972
2020-04-10 2020-03-31 13F MERCK & CO. COM 58933Y105 44,477 -1,896 -4.09 3,422 -18.85 1.6783
2020-02-04 2019-12-31 13F MERCK COM 58933Y105 46,373 -1,381 -2.89 4,217 4.93 1.4105
2019-11-04 2019-09-30 13F MERCK COM 58933Y105 47,754 -1,553 -3.15 4,019 -2.78 1.4198
2019-08-07 2019-06-30 13F MERCK COM 58933Y105 49,307 -1,046 -2.08 4,134 -1.27 1.4362
2019-05-03 2019-03-31 13F MERCK COM 58933Y105 50,353 -69 -0.14 4,187 8.70 1.4893
2019-02-01 2018-12-31 13F MERCK COM 58933Y105 50,422 -264 -0.52 3,852 7.15 1.5770
2018-11-01 2018-09-30 13F MERCK COM 58933Y105 50,686 6 0.01 3,595 16.87 1.2133
2018-07-30 2018-06-30 13F MERCK COM 58933Y105 50,680 206 0.41 3,076 11.90 1.0863
2018-05-01 2018-03-31 13F MERCK COM 58933Y105 50,474 -543 -1.06 2,749 -4.22 1.0024
2018-02-01 2017-12-31 13F MERCK COM 58933Y105 51,017 305 0.60 2,870 -11.61 1.0672
2017-11-01 2017-09-30 13F MERCK COM 58933Y105 50,712 -1,488 -2.85 3,247 -2.93 1.2352
2017-07-31 2017-06-30 13F MERCK COM 58933Y105 52,200 205 0.39 3,345 1.27 1.2554
2017-04-27 2017-03-31 13F MERCK COM 58933Y105 51,995 -964 -1.82 3,303 5.97 1.2083
2017-01-30 2016-12-31 13F MERCK COM 58933Y105 52,959 315 0.60 3,117 -5.11 1.1324
2016-10-31 2016-09-30 13F MERCK COM 58933Y105 52,644 -922 -1.72 3,285 6.48 1.2274
2016-07-26 2016-06-30 13F MERCK COM 58933Y105 53,566 -769 -1.42 3,085 7.34 1.1862
2016-04-27 2016-03-31 13F MERCK & CO INC COM 58933Y105 54,335 -843 -1.53 2,874 -1.37 1.1343
2016-01-28 2015-12-31 13F MERCK & CO INC COM 58933Y105 55,178 -1,358 -2.40 2,914 4.37 1.1562
2015-11-16 2015-09-30 13F MERCK & CO INC COM 58933Y105 56,536 256 0.45 2,792 -12.86 1.1613
2015-08-03 2015-06-30 13F MERCK & CO INC COM 58933Y105 56,280 -844 -1.48 3,204 -2.41 1.1837
2015-05-11 2015-03-31 13F MERCK & CO INC COM 58933Y105 57,124 57,124 0.00 3,283 1.1703
2015-02-04 2014-12-31 13F MERCK & CO INC COM 58933Y105 0 -59,354 -100.00 0 -100.00
2014-11-05 2014-09-30 13F MERCK & CO INC COM 58933Y105 59,354 -11,050 -15.70 3,518 -13.61 1.2461
2014-08-01 2014-06-30 13F MERCK & CO INC COM 58933Y105 70,404 -3,845 -5.18 4,072 -3.39 1.3787
2014-04-30 2014-03-31 13F MERCK & CO INC COM 58933Y105 74,249 -538 -0.72 4,215 12.61 1.5178
2014-02-07 2013-12-31 13F MERCK & CO INC COM 58933Y105 74,787 342 0.46 3,743 5.62 1.4409
2013-11-01 2013-09-30 13F MERCK & CO INC COM 58933Y105 74,445 -252 -0.34 3,544 2.16 1.4601
2013-07-29 2013-06-30 13F MERCK & CO INC COM 58933Y105 74,697 74,697 3,469 1.4904
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.