Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionGemmer Asset Management LLC
Latest Disclosed Ownership5,508 shares
Latest Disclosed Value $ 662,563
Gemmer Asset Management LLC reports 16.82% increase in ownership of MRK / Merck & Co., Inc.

On April 22, 2026 - Gemmer Asset Management LLC filed a 13F-HR form disclosing ownership of 5,508 shares of Merck & Co., Inc. (MX:MRK) valued at $662,563 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 4,715 shares of Merck & Co., Inc.. This represents a change in shares of 16.82% 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)
2026-04-22 2026-03-31 13F MERCK COM 58933Y105 5,508 793 16.82 663 33.47 0.0524
2026-01-23 2025-12-31 13F MERCK COM 58933Y105 4,715 71 1.53 496 27.51 0.0382
2025-10-15 2025-09-30 13F MERCK COM 58933Y105 4,644 -367 -7.32 390 -1.77 0.0314
2025-07-22 2025-06-30 13F MERCK COM 58933Y105 5,011 395 8.56 397 -4.35 0.0352
2025-04-14 2025-03-31 13F MERCK COM 58933Y105 4,616 676 17.16 414 5.88 0.0414
2025-01-16 2024-12-31 13F MERCK COM 58933Y105 3,940 849 27.47 392 11.71 0.0386
2024-10-24 2024-09-30 13F MERCK COM 58933Y105 3,091 -350 -10.17 351 -17.84 0.0351
2024-07-16 2024-06-30 13F MERCK COM 58933Y105 3,441 -126 -3.53 426 -9.36 0.0456
2024-04-24 2024-03-31 13F MERCK COM 58933Y105 3,567 454 14.58 471 38.64 0.0546
2024-01-17 2023-12-31 13F MERCK COM 58933Y105 3,113 35 1.14 339 7.28 0.0416
2023-10-19 2023-09-30 13F MERCK COM 58933Y105 3,078 -205 -6.24 317 -16.40 0.0428
2023-07-20 2023-06-30 13F MERCK COM 58933Y105 3,283 206 6.69 379 15.60 0.0515
2023-04-17 2023-03-31 13F MERCK COM 58933Y105 3,077 -851 -21.66 327 -24.83 0.0479
2023-01-20 2022-12-31 13F MERCK COM 58933Y105 3,928 -85 -2.12 436 25.72 0.0690
2022-10-21 2022-09-30 13F MERCK COM 58933Y105 4,013 300 8.08 346 2.06 0.0576
2022-07-22 2022-06-30 13F MERCK COM 58933Y105 3,713 0 0.00 339 11.51 0.0530
2022-04-20 2022-03-31 13F MERCK COM 58933Y105 3,713 0 0.00 304 6.67 0.0373
2022-01-21 2021-12-31 13F MERCK COM 58933Y105 3,713 20 0.54 285 2.89 0.0336
2021-10-19 2021-09-30 13F MERCK COM 58933Y105 3,693 3 0.08 277 -3.48 0.0383
2021-07-23 2021-06-30 13F Merck COM 58933Y105 3,690 41 1.12 287 2.14 0.0396
2021-04-20 2021-03-31 13F Merck COM 58933Y105 3,649 101 2.85 281 -3.10 0.0439
2021-01-28 2020-12-31 13F Merck COM 58933Y105 3,548 0 0.00 290 -1.36 0.0478
2020-10-21 2020-09-30 13F Merck COM 58933Y105 3,548 1 0.03 294 7.30 0.0546
2020-07-31 2020-06-30 13F Merck COM 58933Y105 3,547 16 0.45 274 0.74 0.0576
2020-05-01 2020-03-31 13F Merck COM 58933Y105 3,531 -270 -7.10 272 -21.39 0.0724
2020-01-17 2019-12-31 13F Merck COM 58933Y105 3,801 0 0.00 346 8.13 0.0792
2019-10-11 2019-09-30 13F Merck COM 58933Y105 3,801 -103 -2.64 320 -2.14 0.0794
2019-07-18 2019-06-30 13F Merck COM 58933Y105 3,904 720 22.61 327 23.40 0.0876
2019-04-17 2019-03-31 13F Merck COM 58933Y105 3,184 362 12.83 265 22.69 0.0721
2019-01-18 2018-12-31 13F Merck COM 58933Y105 2,822 -13,432 -82.64 216 -81.27 0.0666
2018-10-12 2018-09-30 13F Merck COM 58933Y105 16,254 1,063 7.00 1,153 25.05 0.3579
2018-07-17 2018-06-30 13F Merck COM 58933Y105 15,191 -8,488 -35.85 922 -28.53 0.3176
2018-05-11 2018-03-31 13F Merck COM 58933Y105 23,679 2,842 13.64 1,290 9.97 0.4440
2018-01-16 2017-12-31 13F Merck COM 58933Y105 20,837 3,565 20.64 1,173 6.06 0.4056
2017-10-12 2017-09-30 13F Merck COM 58933Y105 17,272 4,280 32.94 1,106 32.77 0.4208
2017-07-13 2017-06-30 13F Merck COM 58933Y105 12,992 6,141 89.64 833 91.49 0.3486
2017-04-19 2017-03-31 13F Merck COM 58933Y105 6,851 2,787 68.58 435 82.01 0.1939
2017-01-13 2016-12-31 13F Merck COM 58933Y105 4,064 983 31.91 239 24.48 0.1203
2016-10-17 2016-09-30 13F Merck COM 58933Y105 3,081 472 18.09 192 28.00 0.0978
2016-07-22 2016-06-30 13F Merck COM 58933Y105 2,609 -433 -14.23 150 -6.25 0.0811
2016-04-15 2016-03-31 13F Merck COM 58933Y105 3,042 278 10.06 160 9.59 0.0933
2016-01-22 2015-12-31 13F Merck COM 58933Y105 2,764 186 7.21 146 14.96 0.0862
2015-11-17 2015-09-30 13F/A-1 Merck COM 58933Y105 2,578 -34 -1.30 127 -14.77 0.0803
2015-11-10 2015-09-30 13F Merck COM 58933Y105 7,890 5,300 390 160,669.7043
2015-08-06 2015-06-30 13F Merck COM 58933Y105 2,612 33 1.28 149 0.68 0.0905
2015-04-10 2015-03-31 13F Merck COM 58933Y105 2,579 -12 -0.46 148 0.68 0.0895
2015-02-06 2014-12-31 13F Merck COM 58933Y105 2,591 1 0.04 147 -4.55 0.0996
2014-11-03 2014-09-30 13F Merck COM 58933Y105 2,590 0 0.00 154 2.67 0.1093
2014-08-13 2014-06-30 13F Merck COM 58933Y105 2,590 0 0.00 150 2.04 0.1012
2014-05-23 2014-03-31 13F Merck COM 58933Y105 2,590 2,590 147 0.1049
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.