Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionParisi Gray Wealth Management
Latest Disclosed Ownership4,129 shares
Latest Disclosed Value $ 496,629
Parisi Gray Wealth Management reports 3.77% increase in ownership of MRK / Merck & Co., Inc.

On April 8, 2026 - Parisi Gray Wealth Management filed a 13F-HR form disclosing ownership of 4,129 shares of Merck & Co., Inc. (MX:MRK) valued at $496,629 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 7, 2026 disclosing 3,979 shares of Merck & Co., Inc.. This represents a change in shares of 3.77% 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)
2026-04-08 2026-03-31 13F MERCK COM 58933Y105 4,129 150 3.77 497 18.66 0.1183
2026-01-07 2025-12-31 13F MERCK COM 58933Y105 3,979 -181 -4.35 419 19.77 0.0951
2025-10-17 2025-09-30 13F MERCK COM 58933Y105 4,160 -330 -7.35 349 -1.69 0.0909
2025-07-08 2025-06-30 13F MERCK COM 58933Y105 4,490 -269 -5.65 355 -16.86 0.1019
2025-04-14 2025-03-31 13F MERCK COM 58933Y105 4,759 147 3.19 427 -6.77 0.1395
2025-01-13 2024-12-31 13F MERCK COM 58933Y105 4,612 -408 -8.13 459 -19.65 0.1458
2024-10-07 2024-09-30 13F MERCK COM 58933Y105 5,020 25 0.50 570 -7.77 0.1882
2024-07-15 2024-06-30 13F MERCK COM 58933Y105 4,995 23 0.46 618 -5.79 0.2217
2024-04-15 2024-03-31 13F MERCK COM 58933Y105 4,972 246 5.21 656 27.38 0.2461
2024-01-18 2023-12-31 13F MERCK COM 58933Y105 4,726 5 0.11 515 5.97 0.2088
2023-10-10 2023-09-30 13F MERCK COM 58933Y105 4,721 -16 -0.34 486 -3.57 0.2207
2023-07-14 2023-06-30 13F MERCK COM 58933Y105 4,737 0 0.00 504 0.00 0.2303
2023-04-11 2023-03-31 13F MERCK COM 58933Y105 4,737 -74 -1.54 504 -5.44 0.3134
2023-01-23 2022-12-31 13F MERCK & CO INC NEW COM EQUITY 58933Y105 4,811 379 8.55 534 39.53 0.2628
2022-10-19 2022-09-30 13F MERCK & CO INC NEW COM EQUITY 58933Y105 4,432 31 0.70 382 -4.74 0.2908
2022-07-25 2022-06-30 13F MERCK & CO INC NEW COM EQUITY 58933Y105 4,401 33 0.76 401 12.01 0.2095
2022-05-13 2022-03-31 13F MERCK & CO INC NEW COM EQUITY 58933Y105 4,368 -24 -0.55 358 6.23 0.1450
2022-02-08 2021-12-31 13F MERCK & CO INC NEW COM Equity 58933Y105 4,392 -143 -3.15 337 -8.67 0.1260
2021-11-16 2021-09-30 13F MERCK & CO INC NEW COM Equity 58933Y105 4,535 -115 -2.47 369 1.93 0.1526
2021-08-13 2021-06-30 13F MERCK & CO INC NEW COM Equity 58933Y105 4,650 37 0.80 362 1.69 0.1326
2021-05-17 2021-03-31 13F MERCK & CO INC NEW COM Equity 58933Y105 4,613 -7 -0.15 356 -5.82 0.1486
2021-02-09 2020-12-31 13F MERCK & CO INC NEW COM Equity 58933Y105 4,620 -59 -1.26 378 -2.58 0.1676
2020-11-10 2020-09-30 13F MERCK & CO INC NEW COM Equity 58933Y105 4,679 -158 -3.27 388 3.74 0.2017
2020-07-27 2020-06-30 13F MERCK & CO INC NEW COM Equity 58933Y105 4,837 3 0.06 374 0.54 0.2144
2020-05-13 2020-03-31 13F MERCK & CO INC NEW COM Equity 58933Y105 4,834 -215 -4.26 372 -18.95 0.2634
2020-01-24 2019-12-31 13F MERCK & CO INC NEW COM Equity 58933Y105 5,049 -164 -3.15 459 4.56 0.2597
2019-10-09 2019-09-30 13F MERCK & CO INC NEW COM EQUITY 58933Y105 5,213 159 3.15 439 3.54 0.2910
2019-07-19 2019-06-30 13F MERCK & CO INC NEW COM EQUITY 58933Y105 5,054 0 0.00 424 0.95 0.2886
2019-05-14 2019-03-31 13F MERCK & CO INC NEW COM Equity 58933Y105 5,054 180 3.69 420 14.44 0.2683
2019-02-12 2018-12-31 13F MERCK & CO INC NEW COM Equity 58933Y105 4,874 0 0.00 367 6.38 0.2487
2018-11-13 2018-09-30 13F MERCK & CO INC NEW COM Equity 58933Y105 4,874 0 0.00 345 13.86 0.2125
2018-08-13 2018-06-30 13F MERCK & CO INC NEW COM Equity 58933Y105 4,874 -196 -3.87 303 10.58 0.2019
2018-05-11 2018-03-31 13F MERCK & CO INC NEW COM Equity 58933Y105 5,070 -71 -1.38 274 -5.19 0.2099
2018-02-13 2017-12-31 13F MERCK & CO INC NEW COM Equity 58933Y105 5,141 5,141 289 0.2157
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.