머크 앤 컴퍼니(Merck & Co., Inc.)
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionClarus Group, Inc.
Latest Disclosed Ownership4,451 shares
Latest Disclosed Value $ 535,380
Clarus Group, Inc. reports 0.27% increase in ownership of MRK / Merck & Co., Inc.

On April 21, 2026 - Clarus Group, Inc. filed a 13F-HR form disclosing ownership of 4,451 shares of Merck & Co., Inc. (MX:MRK) valued at $535,380 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 16, 2026 disclosing 4,439 shares of Merck & Co., Inc.. This represents a change in shares of 0.27% 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)
2026-04-21 2026-03-31 13F MERCK COM 58933Y105 4,451 12 0.27 535 14.56 0.1919
2026-01-16 2025-12-31 13F MERCK COM 58933Y105 4,439 -88 -1.94 467 23.22 0.1683
2025-11-03 2025-09-30 13F MERCK COM 58933Y105 4,527 -97 -2.10 380 3.55 0.1321
2025-07-15 2025-06-30 13F MERCK COM 58933Y105 4,624 -559 -10.79 366 -21.29 0.1344
2025-04-25 2025-03-31 13F MERCK COM 58933Y105 5,183 387 8.07 465 -2.52 0.1807
2025-01-29 2024-12-31 13F MERCK COM 58933Y105 4,796 9 0.19 477 -12.15 0.1697
2024-10-21 2024-09-30 13F MERCK COM 58933Y105 4,787 -1,836 -27.72 544 -33.70 0.2295
2024-07-22 2024-06-30 13F MERCK COM 58933Y105 6,623 208 3.24 820 -3.19 0.3620
2024-04-22 2024-03-31 13F MERCK COM 58933Y105 6,415 -356 -5.26 846 14.63 0.5925
2024-01-29 2023-12-31 13F MERCK COM 58933Y105 6,771 -1,125 -14.25 738 -9.11 0.5585
2023-10-16 2023-09-30 13F MERCK COM 58933Y105 7,896 -968 -10.92 813 -20.55 0.5898
2023-07-17 2023-06-30 13F MERCK COM 58933Y105 8,864 3,480 64.64 1,023 78.67 0.7462
2023-04-18 2023-03-31 13F MERCK COM 58933Y105 5,384 12 0.22 573 -4.03 0.5378
2023-01-27 2022-12-31 13F MERCK COM 58933Y105 5,372 16 0.30 596 29.28 0.5232
2022-11-10 2022-09-30 13F MERCK COM 58933Y105 5,356 14 0.26 461 -5.34 0.4203
2022-07-27 2022-06-30 13F MERCK COM 58933Y105 5,342 16 0.30 487 11.44 0.4082
2022-05-13 2022-03-31 13F MERCK COM 58933Y105 5,326 78 1.49 437 11.20 0.2973
2022-02-08 2021-12-31 13F MERCK COM 58933Y105 5,248 15 0.29 393 0.00 0.2643
2021-11-15 2021-09-30 13F MERCK & COMPANY Equity 58933Y105 5,233 0 0.00 393 -3.68 0.2713
2021-08-12 2021-06-30 13F MERCK & COMPANY Equity 58933Y105 5,233 -1,119 -17.62 408 -15.70 0.3052
2021-05-07 2021-03-31 13F/A-1 MERCK & COMPANY. Equity 58933Y105 6,352 17 0.27 484 1.89 0.4029
2021-02-16 2020-12-31 13F MERCK & COMPANY. Common 58933Y105 6,335 6,335 475 0.4101
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.