Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionArcher Investment Corp
Latest Disclosed Ownership24,092 shares
Latest Disclosed Value $ 2,898,042
Archer Investment Corp reports 10.21% decrease in ownership of MRK / Merck & Co., Inc.

On May 4, 2026 - Archer Investment Corp filed a 13F-HR form disclosing ownership of 24,092 shares of Merck & Co., Inc. (MX:MRK) valued at $2,898,042 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 30, 2026 disclosing 26,831 shares of Merck & Co., Inc.. This represents a change in shares of -10.21% 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)
2026-05-04 2026-03-31 13F MERCK &CO. INC COM COM 58933Y105 24,092 -2,739 -10.21 2,898 2.62 0.6177
2026-01-30 2025-12-31 13F Merck COM 58933Y105 26,831 3,125 13.18 2,824 41.98 0.6371
2025-11-03 2025-09-30 13F MERCK & CO INC COM 58933Y105 23,706 -315 -1.31 1,990 4.63 0.4491
2025-08-12 2025-06-30 13F MERCK & CO INC COM 58933Y105 24,021 -2,379 -9.01 1,901 -19.76 0.4533
2025-05-05 2025-03-31 13F MERCK & CO INC COM 58933Y105 26,400 3,238 13.98 2,370 2.82 0.6139
2025-01-28 2024-12-31 13F MERCK & CO INC COM 58933Y105 23,162 2 0.01 2,304 -12.40 0.6143
2024-11-06 2024-09-30 13F MERCK & CO INC COM 58933Y105 23,160 -5,584 -19.43 2,630 -26.08 0.7053
2024-08-02 2024-06-30 13F MERCK & CO INC COM 58933Y105 28,744 380 1.34 3,559 -4.92 1.0389
2024-05-09 2024-03-31 13F MERCK & CO INC COM 58933Y105 28,364 166 0.59 3,743 21.73 1.1252
2024-01-31 2023-12-31 13F MERCK & CO INC COM 58933Y105 28,198 30 0.11 3,074 6.04 0.9908
2023-11-08 2023-09-30 13F MERCK & CO INC Stock 58933Y105 28,168 579 2.10 2,900 -8.92 1.0198
2023-08-08 2023-06-30 13F MERCK & CO INC COM 58933Y105 27,589 -764 -2.69 3,183 4.43 1.1337
2023-05-09 2023-03-31 13F MERCK & CO INC COM 58933Y105 28,353 576 2.07 3,048 -1.07 1.1260
2023-02-13 2022-12-31 13F/A-1 MERCK & CO INC COM 58933Y105 27,777 -191 -0.68 3,082 27.95 1.1966
2023-02-03 2022-12-31 13F MERCK & CO INC COM 58933Y105 27,777 -191 3,082 1.1966
2022-11-09 2022-09-30 13F MERCK & CO INC COM 58933Y105 27,968 307 1.11 2,409 -4.48 1.0157
2022-08-05 2022-06-30 13F MERCK & CO INC COM 58933Y105 27,661 886 3.31 2,522 14.64 1.0210
2022-05-12 2022-03-31 13F MERCK & CO INC COM 58933Y105 26,775 -358 -1.32 2,200 5.77 0.7796
2022-02-09 2021-12-31 13F Merck COM 58933Y105 27,133 326 1.22 2,079 3.28 0.7060
2021-10-29 2021-09-30 13F Merck COM 58933Y105 26,807 2,297 9.37 2,013 5.61 0.7533
2021-08-05 2021-06-30 13F MERCK & CO INC NEW COM COM 58933Y105 24,510 4,222 20.81 1,906 21.87 0.7518
2021-05-14 2021-03-31 13F MERCK & CO INC NEW COM COM 58933Y105 20,288 -488 -2.35 1,564 -7.95 0.6450
2021-02-11 2020-12-31 13F Merck COM 58933Y105 20,776 0 0.00 1,699 -1.39 0.8073
2020-11-13 2020-09-30 13F Merck COM 58933Y105 20,776 -36 -0.17 1,723 7.09 0.8960
2020-08-13 2020-06-30 13F Merck COM 58933Y105 20,812 -524 -2.46 1,609 -2.01 0.9080
2020-05-07 2020-03-31 13F Merck COM 58933Y105 21,336 1,368 6.85 1,642 -9.58 1.1029
2020-02-20 2019-12-31 13F Merck COM 58933Y105 19,968 338 1.72 1,816 9.93 0.9588
2020-04-01 2019-09-30 13F MERCK & CO INC COM 58933Y105 19,630 51 0.26 1,652 0.61 0.9991
2020-05-19 2019-06-30 13F MERCK & CO INC COM 58933Y105 19,579 400 2.09 1,642 2.95 1.0458
2020-04-09 2019-03-31 13F MERCK & CO INC COM 58933Y105 19,179 0 0.00 1,595 8.87 1.0774
2020-04-06 2018-12-31 13F Merck COM 58933Y105 19,179 19,179 1,465 1.2824
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.