Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionAdvisorNet Financial, Inc
Latest Disclosed Ownership10,700 shares
Latest Disclosed Value $ 1,287,052
AdvisorNet Financial, Inc reports 5.28% decrease in ownership of MRK / Merck & Co., Inc.

On April 17, 2026 - AdvisorNet Financial, Inc filed a 13F-HR form disclosing ownership of 10,700 shares of Merck & Co., Inc. (MX:MRK) valued at $1,287,052 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 20, 2026 disclosing 11,296 shares of Merck & Co., Inc.. This represents a change in shares of -5.28% 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-04-17 2026-03-31 13F MERCK Stock 58933Y105 10,700 -596 -5.28 1,287 8.24 0.0666
2026-01-20 2025-12-31 13F MERCK Stock 58933Y105 11,296 -646 -5.41 1,189 18.66 0.0633
2025-10-09 2025-09-30 13F MERCK Stock 58933Y105 11,942 -2,064 -14.74 1,002 -9.57 0.0567
2025-07-14 2025-06-30 13F MERCK Stock 58933Y105 14,006 -1,915 -12.03 1,109 -22.46 0.0715
2025-04-07 2025-03-31 13F MERCK Stock 58933Y105 15,921 -1,594 -9.10 1,429 -17.97 0.1061
2025-01-13 2024-12-31 13F MERCK Stock 58933Y105 17,515 -11,387 -39.40 1,742 -46.92 0.1458
2024-10-15 2024-09-30 13F MERCK Stock 58933Y105 28,902 -254 -0.87 3,282 -9.06 0.2452
2024-07-16 2024-06-30 13F MERCK Stock 58933Y105 29,156 -289 -0.98 3,610 -7.10 0.3277
2024-04-12 2024-03-31 13F MERCK Stock 58933Y105 29,445 1,112 3.92 3,885 25.81 0.3736
2024-01-19 2023-12-31 13F MERCK Stock 58933Y105 28,333 -494 -1.71 3,089 4.08 0.2848
2023-10-12 2023-09-30 13F MERCK Stock 58933Y105 28,827 -10,755 -27.17 2,968 -35.03 0.2694
2023-07-14 2023-06-30 13F MERCK Stock 58933Y105 39,582 -1,023 -2.52 4,567 5.72 0.3907
2023-04-28 2023-03-31 13F MERCK Stock 58933Y105 40,605 -1,720 -4.06 4,320 -8.01 0.3951
2023-01-13 2022-12-31 13F MERCK Stock 58933Y105 42,325 -318 -0.75 4,696 27.89 0.4621
2022-10-04 2022-09-30 13F MERCK Stock 58933Y105 42,643 179 0.42 3,672 -5.14 0.3666
2022-07-07 2022-06-30 13F MERCK Stock 58933Y105 42,464 -95 -0.22 3,871 10.85 0.3802
2022-04-14 2022-03-31 13F MERCK Stock 58933Y105 42,559 11,425 36.70 3,492 46.35 0.2198
2022-01-19 2021-12-31 13F MERCK Stock 58933Y105 31,134 1,617 5.48 2,386 7.62 0.1470
2021-10-15 2021-09-30 13F MERCK Stock 58933Y105 29,517 -14,395 -32.78 2,217 -35.08 0.1543
2021-07-06 2021-06-30 13F MERCK Stock 58933Y105 43,912 632 1.46 3,415 2.37 0.2263
2021-04-14 2021-03-31 13F MERCK Stock 58933Y105 43,280 756 1.78 3,336 -4.08 0.2375
2021-02-04 2020-12-31 13F MERCK Stock 58933Y105 42,524 -2,216 -4.95 3,478 -6.28 0.2807
2020-11-06 2020-09-30 13F MERCK Stock 58933Y105 44,740 993 2.27 3,711 9.70 0.3181
2020-08-26 2020-06-30 13F MERCK Stock 58933Y105 43,747 1,238 2.91 3,383 3.42 0.2726
2020-05-14 2020-03-31 13F MERCK Stock 58933Y105 42,509 -2,087 -4.68 3,271 -19.35 0.3018
2020-02-12 2019-12-31 13F MERCK Stock 58933Y105 44,596 -2,936 -6.18 4,056 1.37 0.3441
2019-10-23 2019-09-30 13F MERCK Stock 58933Y105 47,532 3,503 7.96 4,001 8.37 0.3678
2019-07-15 2019-06-30 13F MERCK Stock 58933Y105 44,029 350 0.80 3,692 1.62 0.4084
2019-05-14 2019-03-31 13F MERCK Stock 58933Y105 43,679 1,891 4.53 3,633 13.78 0.4440
2019-02-08 2018-12-31 13F MERCK Stock 58933Y105 41,788 1,032 2.53 3,193 10.45 0.4412
2018-11-14 2018-09-30 13F MERCK Stock 58933Y105 40,756 8,639 26.90 2,891 48.33 0.3634
2018-07-26 2018-06-30 13F MERCK Stock 58933Y105 32,117 -3,042 -8.65 1,949 1.78 0.2635
2018-05-08 2018-03-31 13F MERCK Stock 58933Y105 35,159 6,276 21.73 1,915 17.85 0.2646
2018-02-27 2017-12-31 13F MERCK Stock 58933Y105 28,883 28,883 1,625 0.2469
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.