Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionRed Spruce Capital, LLC
Latest Disclosed Ownership26,093 shares
Latest Disclosed Value $ 3,138,727
Red Spruce Capital, LLC reports 1.35% increase in ownership of MRK / Merck & Co., Inc.

On April 9, 2026 - Red Spruce Capital, LLC filed a 13F-HR form disclosing ownership of 26,093 shares of Merck & Co., Inc. (MX:MRK) valued at $3,138,727 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 6, 2026 disclosing 25,745 shares of Merck & Co., Inc.. This represents a change in shares of 1.35% 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)
2026-04-09 2026-03-31 13F Merck & Company, Inc. COM 58933Y105 26,093 348 1.35 3,139 15.84 1.2887
2026-01-06 2025-12-31 13F Merck & Company, Inc. COM 58933Y105 25,745 651 2.59 2,710 28.63 1.0803
2025-10-06 2025-09-30 13F Merck & Company, Inc. COM 58933Y105 25,094 -16,425 -39.56 2,106 -35.91 0.8587
2025-07-08 2025-06-30 13F Merck & Company, Inc. COM 58933Y105 41,519 -808 -1.91 3,287 -13.50 1.4245
2025-04-08 2025-03-31 13F Merck & Company, Inc. COM 58933Y105 42,327 -412 -0.96 3,799 -10.63 1.7865
2025-01-17 2024-12-31 13F Merck & Company, Inc. COM 58933Y105 42,739 3,299 8.36 4,252 -5.07 1.8870
2024-10-04 2024-09-30 13F MERCK & CO INC NEW COM COM 58933Y105 39,440 -159 -0.40 4,479 -8.65 2.0366
2024-07-02 2024-06-30 13F MERCK & CO INC NEW COM COM 58933Y105 39,599 438 1.12 4,902 -5.13 2.2761
2024-04-10 2024-03-31 13F MERCK & CO INC NEW COM COM 58933Y105 39,161 139 0.36 5,167 21.46 2.3972
2024-01-05 2023-12-31 13F MERCK & CO INC NEW COM COM 58933Y105 39,022 621 1.62 4,254 7.61 2.1841
2023-10-03 2023-09-30 13F MERCK & CO INC NEW COM COM 58933Y105 38,401 16 0.04 3,953 -10.75 2.2442
2023-07-05 2023-06-30 13F MERCK & CO INC NEW COM COM 58933Y105 38,385 -13,875 -26.55 4,429 -20.33 2.3853
2023-04-06 2023-03-31 13F MERCK & CO INC NEW COM COM 58933Y105 52,260 847 1.65 5,560 -2.54 3.2538
2023-01-03 2022-12-31 13F MERCK & CO INC NEW COM COM 58933Y105 51,413 832 1.64 5,704 30.95 3.6307
2022-10-03 2022-09-30 13F MERCK & CO INC NEW COM COM 58933Y105 50,581 -2,816 -5.27 4,356 -10.52 3.0574
2022-07-05 2022-06-30 13F MERCK & CO INC NEW COM COM 58933Y105 53,397 -381 -0.71 4,868 10.34 3.2449
2022-04-05 2022-03-31 13F MERCK & CO INC NEW COM COM 58933Y105 53,778 1,991 3.84 4,412 11.16 2.5022
2022-01-03 2021-12-31 13F MERCK & CO INC NEW COM COM 58933Y105 51,787 2,395 4.85 3,969 6.98 2.1711
2021-10-04 2021-09-30 13F MERCK & CO INC NEW COM COM 58933Y105 49,392 3,671 8.03 3,710 4.33 2.1711
2021-07-06 2021-06-30 13F MERCK & CO INC NEW COM COM 58933Y105 45,721 1,857 4.23 3,556 5.18 2.0983
2021-04-01 2021-03-31 13F MERCK & CO INC NEW COM COM 58933Y105 43,864 4,553 11.58 3,381 5.13 2.1493
2021-01-04 2020-12-31 13F MERCK & CO INC NEW COM COM 58933Y105 39,311 719 1.86 3,216 0.47 2.2332
2020-10-02 2020-09-30 13F MERCK & CO INC NEW COM COM 58933Y105 38,592 -137 -0.35 3,201 6.88 2.6030
2020-07-02 2020-06-30 13F MERCK & CO INC NEW COM COM 58933Y105 38,729 21,117 119.90 2,995 121.03 2.5409
2020-04-06 2020-03-31 13F MERCK & CO INC NEW COM COM 58933Y105 17,612 280 1.62 1,355 -14.02 1.4082
2020-01-16 2019-12-31 13F MERCK & CO INC NEW COM COM 58933Y105 17,332 17,332 1,576 1.3140
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.