Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionIntegrated Advisors Network LLC
Latest Disclosed Ownership58,444 shares
Latest Disclosed Value $ 7,030,390
Integrated Advisors Network LLC reports 2.21% decrease in ownership of MRK / Merck & Co., Inc.

On April 28, 2026 - Integrated Advisors Network LLC filed a 13F-HR form disclosing ownership of 58,444 shares of Merck & Co., Inc. (MX:MRK) valued at $7,030,390 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 59,766 shares of Merck & Co., Inc.. This represents a change in shares of -2.21% 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)
2026-04-28 2026-03-31 13F MERCK COM 58933Y105 58,444 -1,322 -2.21 7,030 11.75 0.3689
2026-02-17 2025-12-31 13F MERCK COM 58933Y105 59,766 24,522 69.58 6,291 112.75 0.2783
2025-11-12 2025-09-30 13F MERCK COM 58933Y105 35,244 9 0.03 2,958 6.02 0.1242
2025-08-12 2025-06-30 13F MERCK COM 58933Y105 35,235 -4,979 -12.38 2,789 -22.72 0.1259
2025-04-15 2025-03-31 13F MERCK COM 58933Y105 40,214 -8,808 -17.97 3,610 -25.98 0.1821
2025-02-25 2024-12-31 13F MERCK COM 58933Y105 49,022 -1,170 -2.33 4,877 -14.44 0.2330
2024-10-25 2024-09-30 13F MERCK COM 58933Y105 50,192 1,628 3.35 5,700 -5.21 0.2695
2024-08-09 2024-06-30 13F MERCK COM 58933Y105 48,564 227 0.47 6,012 -5.74 0.3079
2024-05-06 2024-03-31 13F MERCK COM 58933Y105 48,337 -140 -0.29 6,378 20.70 0.3239
2024-02-26 2023-12-31 13F MERCK COM 58933Y105 48,477 579 1.21 5,285 7.16 0.2988
2023-11-16 2023-09-30 13F MERCK COM 58933Y105 47,898 -2,954 -5.81 4,931 -15.95 0.3015
2023-07-14 2023-06-30 13F MERCK COM 58933Y105 50,852 -37,048 -42.15 5,868 -37.26 0.3379
2023-05-08 2023-03-31 13F MERCK COM 58933Y105 87,900 -11,238 -11.34 9,352 -14.98 0.5619
2023-02-02 2022-12-31 13F/A-1 MERCK COM 58933Y105 99,138 1,319 1.35 10,999 30.57 0.7088
2022-11-08 2022-09-30 13F MERCK COM 58933Y105 97,819 8,191 9.14 8,424 3.10 0.5724
2022-08-12 2022-06-30 13F MERCK COM 58933Y105 89,628 67,199 299.61 8,171 344.08 0.5317
2022-05-02 2022-03-31 13F MERCK COM 58933Y105 22,429 3,195 16.61 1,840 24.83 0.1079
2022-02-14 2021-12-31 13F MERCK COM 58933Y105 19,234 1,833 10.53 1,474 12.78 0.0869
2021-11-15 2021-09-30 13F MERCK COM 58933Y105 17,401 4,054 30.37 1,307 25.92 0.0867
2021-08-06 2021-06-30 13F MERCK COM 58933Y105 13,347 -13 -0.10 1,038 0.78 0.0764
2021-05-17 2021-03-31 13F MERCK & CO. COM 58933Y105 13,360 1,726 14.84 1,030 8.19 0.0941
2021-02-12 2020-12-31 13F MERCK & CO. COM 58933Y105 11,634 -26,568 -69.55 952 -69.96 0.1044
2020-11-09 2020-09-30 13F MERCK & CO. COM 58933Y105 38,202 -1,893 -4.72 3,169 2.19 0.4007
2020-08-13 2020-06-30 13F MERCK & CO. COM 58933Y105 40,095 3,286 8.93 3,101 9.50 0.3635
2020-05-06 2020-03-31 13F MERCK & CO. COM 58933Y105 36,809 1,523 4.32 2,832 -11.75 0.5544
2020-02-06 2019-12-31 13F MERCK COM 58933Y105 35,286 35,286 3,209 0.4329
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.