머크 앤 컴퍼니(Merck & Co., Inc.)
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionQuadrant Private Wealth Management, LLC
Latest Disclosed Ownership30,927 shares
Latest Disclosed Value $ 3,746,567
Quadrant Private Wealth Management, LLC reports 4.62% increase in ownership of MRK / Merck & Co., Inc.

On May 6, 2026 - Quadrant Private Wealth Management, LLC filed a 13F-HR form disclosing ownership of 30,927 shares of Merck & Co., Inc. (MX:MRK) valued at $3,746,567 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 29,562 shares of Merck & Co., Inc.. This represents a change in shares of 4.62% 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)
2026-05-06 2026-03-31 13F MERCK COM 58933Y105 30,927 1,365 4.62 3,747 19.45 0.5797
2026-01-26 2025-12-31 13F MERCK COM 58933Y105 29,562 -896 -2.94 3,137 21.50 0.5143
2025-10-30 2025-09-30 13F MERCK COM 58933Y105 30,458 -1,103 -3.49 2,581 2.22 0.4713
2025-08-06 2025-06-30 13F MERCK COM 58933Y105 31,561 -1,766 -5.30 2,525 -16.34 0.5236
2025-05-06 2025-03-31 13F MERCK COM 58933Y105 33,327 -185 -0.55 3,018 -10.10 0.7519
2025-01-30 2024-12-31 13F MERCK COM 58933Y105 33,512 25,745 331.47 3,358 278.47 0.8260
2024-11-12 2024-09-30 13F MERCK COM 58933Y105 7,767 116 1.52 888 -6.83 0.2200
2024-08-13 2024-06-30 13F MERCK COM 58933Y105 7,651 -10,971 -58.91 953 -61.47 0.2188
2024-05-15 2024-03-31 13F MERCK COM 58933Y105 18,622 -67 -0.36 2,471 20.48 0.6252
2024-02-14 2023-12-31 13F MERCK COM 58933Y105 18,689 1,643 9.64 2,052 16.07 0.5685
2023-11-13 2023-09-30 13F MERCK COM 58933Y105 17,046 -1,650 -8.83 1,767 -18.57 0.5946
2023-08-11 2023-06-30 13F MERCK COM 58933Y105 18,696 -137 -0.73 2,171 7.59 0.6287
2023-05-15 2023-03-31 13F MERCK COM 58933Y105 18,833 -134 -0.71 2,017 -4.77 0.6291
2023-02-14 2022-12-31 13F MERCK COM 58933Y105 18,967 827 4.56 2,118 27.13 0.7103
2022-08-15 2022-06-30 13F MERCK COM 58933Y105 18,140 -749 -3.97 1,666 6.59 0.6840
2022-05-12 2022-03-31 13F MERCK COM 58933Y105 18,889 1,574 9.09 1,563 17.78 0.5830
2022-02-08 2021-12-31 13F MERCK COM 58933Y105 17,315 64 0.37 1,327 2.39 0.4931
2021-11-12 2021-09-30 13F MERCK COM 58933Y105 17,251 -169 -0.97 1,296 -4.35 0.5351
2021-08-16 2021-06-30 13F MERCK COM 58933Y105 17,420 -924 -5.04 1,355 -4.17 0.5495
2021-05-17 2021-03-31 13F MERCK & CO. COM 58933Y105 18,344 79 0.43 1,414 -5.35 0.6149
2021-02-12 2020-12-31 13F MERCK & CO. COM 58933Y105 18,265 743 4.24 1,494 2.82 0.6654
2020-11-12 2020-09-30 13F MERCK & CO. COM 58933Y105 17,522 333 1.94 1,453 9.33 0.7310
2020-08-04 2020-06-30 13F MERCK & CO. COM 58933Y105 17,189 4,883 39.68 1,329 40.34 0.7672
2020-05-08 2020-03-31 13F MERCK & CO. COM 58933Y105 12,306 8,002 185.92 947 142.20 0.7916
2020-02-13 2019-12-31 13F MERCK COM 58933Y105 4,304 -122 -2.76 391 4.83 0.3499
2019-11-12 2019-09-30 13F MERCK COM 58933Y105 4,426 -174 -3.78 373 -3.37 0.3431
2019-08-13 2019-06-30 13F MERCK COM 58933Y105 4,600 -229 -4.74 386 -3.98 0.3519
2019-05-14 2019-03-31 13F MERCK COM 58933Y105 4,829 9 0.19 402 9.24 0.3697
2019-02-04 2018-12-31 13F MERCK COM 58933Y105 4,820 -1,051 -17.90 368 -11.75 0.3918
2018-11-05 2018-09-30 13F MERCK COM 58933Y105 5,871 0 0.00 417 17.13 0.3672
2018-08-06 2018-06-30 13F MERCK COM 58933Y105 5,871 -336 -5.41 356 5.33 0.3467
2018-05-14 2018-03-31 13F MERCK COM 58933Y105 6,207 -70 -1.12 338 -4.25 0.4416
2018-02-02 2017-12-31 13F MERCK COM 58933Y105 6,277 6,277 353 0.3671
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.