Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionRockline Wealth Management, LLC
Latest Disclosed Ownership50,328 shares
Latest Disclosed Value $ 6,053,955
Rockline Wealth Management, LLC reports 1.24% decrease in ownership of MRK / Merck & Co., Inc.

On April 30, 2026 - Rockline Wealth Management, LLC filed a 13F-HR form disclosing ownership of 50,328 shares of Merck & Co., Inc. (MX:MRK) valued at $6,053,955 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 50,960 shares of Merck & Co., Inc.. This represents a change in shares of -1.24% 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)
2026-04-30 2026-03-31 13F MERCK COM 58933Y105 50,328 -632 -1.24 6,054 12.84 1.3159
2026-02-10 2025-12-31 13F MERCK COM 58933Y105 50,960 -3,973 -7.23 5,364 16.36 1.0936
2025-11-03 2025-09-30 13F MERCK COM 58933Y105 54,933 -298 -0.54 4,611 5.44 0.9544
2025-08-05 2025-06-30 13F MERCK COM 58933Y105 55,231 -1,626 -2.86 4,372 -14.32 1.0345
2025-04-22 2025-03-31 13F MERCK COM 58933Y105 56,857 963 1.72 5,103 -8.22 1.4201
2025-01-27 2024-12-31 13F MERCK COM 58933Y105 55,894 2,612 4.90 5,560 -8.10 1.4856
2024-10-17 2024-09-30 13F MERCK COM 58933Y105 53,282 1,692 3.28 6,051 -5.26 1.7075
2024-08-01 2024-06-30 13F MERCK COM 58933Y105 51,590 5,167 11.13 6,387 4.26 1.9736
2024-05-01 2024-03-31 13F MERCK COM 58933Y105 46,423 646 1.41 6,125 22.75 2.1412
2024-01-12 2023-12-31 13F MERCK COM 58933Y105 45,777 45,777 4,991 2.0729
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.