Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionNorden Group Llc
Latest Disclosed Ownership42,225 shares
Latest Disclosed Value $ 5,079,250
Norden Group Llc reports 2.57% increase in ownership of MRK / Merck & Co., Inc.

On April 15, 2026 - Norden Group Llc filed a 13F-HR form disclosing ownership of 42,225 shares of Merck & Co., Inc. (MX:MRK) valued at $5,079,250 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 13, 2026 disclosing 41,166 shares of Merck & Co., Inc.. This represents a change in shares of 2.57% 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)
2026-04-15 2026-03-31 13F MERCK COM 58933Y105 42,225 1,059 2.57 5,079 17.22 0.4880
2026-01-13 2025-12-31 13F MERCK COM 58933Y105 41,166 11 0.03 4,333 25.45 0.4243
2025-10-15 2025-09-30 13F MERCK COM 58933Y105 41,155 8,796 27.18 3,454 34.87 0.3510
2025-07-15 2025-06-30 13F MERCK COM 58933Y105 32,359 121 0.38 2,561 -11.48 0.2781
2025-05-07 2025-03-31 13F MERCK COM 58933Y105 32,238 2,751 9.33 2,894 -1.36 0.3330
2025-02-05 2024-12-31 13F MERCK COM 58933Y105 29,487 2,254 8.28 2,933 -5.14 0.3317
2024-10-17 2024-09-30 13F MERCK COM 58933Y105 27,233 12,057 79.45 3,093 64.64 0.3650
2024-08-06 2024-06-30 13F MERCK COM 58933Y105 15,176 844 5.89 1,879 -0.69 0.3798
2024-04-30 2024-03-31 13F/A-1 MERCK COM 58933Y105 14,332 2,068 16.86 1,891 41.54 0.3841
2024-04-19 2024-03-31 13F MERCK COM 58933Y105 273,923 261,659 36,144 0.4021
2024-02-05 2023-12-31 13F MERCK COM 58933Y105 12,264 -1,967 -13.82 1,337 -8.81 0.2301
2023-11-06 2023-09-30 13F MERCK COM 58933Y105 14,231 14,231 1,465 0.4820
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.