Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionSymmetry Partners, LLC
Latest Disclosed Ownership12,994 shares
Latest Disclosed Value $ 1,563,011
Symmetry Partners, LLC reports 1.44% increase in ownership of MRK / Merck & Co., Inc.

On April 27, 2026 - Symmetry Partners, LLC filed a 13F-HR form disclosing ownership of 12,994 shares of Merck & Co., Inc. (MX:MRK) valued at $1,563,011 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 27, 2026 disclosing 12,809 shares of Merck & Co., Inc.. This represents a change in shares of 1.44% 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)
2026-04-27 2026-03-31 13F MERCK COM 58933Y105 12,994 185 1.44 1,563 15.95 0.0684
2026-01-27 2025-12-31 13F MERCK COM 58933Y105 12,809 9,406 276.40 1,348 372.98 0.0798
2025-10-15 2025-09-30 13F MERCK COM 58933Y105 3,403 3,403 286 0.0311
2025-07-17 2025-06-30 13F MERCK COM 58933Y105 0 -2,579 -100.00 0 -100.00
2025-04-23 2025-03-31 13F MERCK COM 58933Y105 2,579 172 7.15 232 -3.35 0.0322
2025-02-11 2024-12-31 13F MERCK COM 58933Y105 2,407 -1,513 -38.60 239 -46.29 0.0341
2024-10-29 2024-09-30 13F MERCK COM 58933Y105 3,920 -7,866 -66.74 445 44,400.00 0.1055
2024-07-11 2024-06-30 13F MERCK COM 58933Y105 11,786 -968 -7.59 1 0.00 0.0751
2024-04-02 2024-03-31 13F MERCK COM 58933Y105 12,754 -13,754 -51.89 2 -50.00 0.1317
2024-01-02 2023-12-31 13F MERCK COM 58933Y105 26,508 -42,084 -61.35 3 -71.43 0.1557
2023-10-10 2023-09-30 13F MERCK COM 58933Y105 68,592 -13,143 -16.08 7 -22.22 0.3828
2023-07-05 2023-06-30 13F MERCK COM 58933Y105 81,735 -433 -0.53 9 12.50 0.4997
2023-04-03 2023-03-31 13F MERCK COM 58933Y105 82,168 6,969 9.27 9 0.00 0.4822
2023-01-06 2022-12-31 13F MERCK COM 58933Y105 75,199 4,787 6.80 8 -99.87 0.4938
2022-10-03 2022-09-30 13F MERCK COM 58933Y105 70,412 -45 -0.06 6,064 -5.60 0.4085
2022-07-11 2022-06-30 13F MERCK COM 58933Y105 70,457 57,601 448.05 6,424 508.91 0.4321
2022-04-04 2022-03-31 13F MERCK COM 58933Y105 12,856 3,129 32.17 1,055 41.61 0.0663
2022-01-11 2021-12-31 13F MERCK COM 58933Y105 9,727 -2,454 -20.15 745 -25.05 0.0474
2021-10-18 2021-09-30 13F MERCK COM 58933Y105 12,181 0 0.00 994 4.96 0.0654
2021-07-07 2021-06-30 13F MERCK COM 58933Y105 12,181 123 1.02 947 1.83 0.0630
2021-05-03 2021-03-31 13F MERCK COM 58933Y105 12,058 -20,348 -62.79 930 -64.92 0.0668
2021-02-18 2020-12-31 13F Merck COM 58933Y105 32,406 -1,091 -3.26 2,651 -4.61 0.2057
2020-11-03 2020-09-30 13F Merck COM 58933Y105 33,497 18,861 128.87 2,779 145.49 0.2368
2020-07-20 2020-06-30 13F Merck COM 58933Y105 14,636 14,636 1,132 0.1415
2020-05-15 2020-03-31 13F MERCK CO USD 0.5 COMMON 58933Y105 0 -23,444 -100.00 0 -100.00
2020-02-12 2019-12-31 13F MERCK CO USD 0.5 COMMON 58933Y105 23,444 -10,059 -30.02 2,132 -24.40 0.4399
2019-11-04 2019-09-30 13F MERCK & CO USD 0.5 COMMON 58933Y105 33,503 0 0.00 2,820 0.39 0.5825
2019-08-07 2019-06-30 13F MERCK & CO USD COMMON 58933Y105 33,503 -1,210 -3.49 2,809 -2.70 0.5738
2019-05-13 2019-03-31 13F MERCK & CO USD COM 58933Y105 34,713 14,863 74.88 2,887 90.31 0.4930
2019-05-22 2018-12-31 13F/A-1 MERCK & CO USD COM 58933Y105 19,850 19,850 1,517 0.3864
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.