머크 앤 컴퍼니(Merck & Co., Inc.)
DE ˙ XTRA ˙ US58933Y1055
€102.78 ↑2.84 (2.84%)
2026-06-04
주가
SecurityDE:6MK / Merck & Co., Inc.
InstitutionLantz Financial LLC
Latest Disclosed Ownership17,525 shares
Latest Disclosed Value $ 2,108,125
Lantz Financial LLC reports 4.54% increase in ownership of 6MK / Merck & Co., Inc.

On April 9, 2026 - Lantz Financial LLC filed a 13F-HR form disclosing ownership of 17,525 shares of Merck & Co., Inc. (DE:6MK) valued at $1,826,105 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 14, 2026 disclosing 16,764 shares of Merck & Co., Inc.. This represents a change in shares of 4.54% during the quarter. The current value of the position is $1,801,220 USD.

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)
2026-04-09 2026-03-31 13F MERCK COM 58933Y105 17,525 761 4.54 2,108 19.50 0.4358
2026-01-14 2025-12-31 13F MERCK COM 58933Y105 16,764 1,425 9.29 1,765 37.06 0.3723
2025-11-06 2025-09-30 13F MERCK COM 58933Y105 15,339 1,191 8.42 1,287 15.01 0.2849
2025-07-11 2025-06-30 13F MERCK COM 58933Y105 14,148 170 1.22 1,120 -10.77 0.2791
2025-04-08 2025-03-31 13F MERCK COM 58933Y105 13,978 -68 -0.48 1,255 -10.24 0.3434
2025-01-21 2024-12-31 13F MERCK COM 58933Y105 14,046 -460 -3.17 1,397 -15.18 0.3724
2024-10-15 2024-09-30 13F MERCK COM 58933Y105 14,506 6 0.04 1,647 -8.25 0.4459
2024-08-07 2024-06-30 13F/A-1 MERCK COM 58933Y105 14,500 42 0.29 1,795 -5.87 0.5577
2024-07-10 2024-06-30 13F MERCK COM 58933Y105 14,500 42 1,795 0.5577
2024-04-10 2024-03-31 13F MERCK COM 58933Y105 14,458 12 0.08 1,908 21.16 0.6139
2024-01-12 2023-12-31 13F MERCK COM 58933Y105 14,446 2,375 19.68 1,575 26.73 0.5688
2023-10-20 2023-09-30 13F MERCK COM 58933Y105 12,071 88 0.73 1,243 -10.13 0.4945
2023-07-12 2023-06-30 13F MERCK COM 58933Y105 11,983 -279 -2.28 1,383 5.98 0.5414
2023-04-10 2023-03-31 13F MERCK COM 58933Y105 12,262 -658 -5.09 1,305 -9.00 0.5425
2023-01-23 2022-12-31 13F MERCK COM 58933Y105 12,920 -254 -1.93 1,433 26.26 0.6520
2022-10-17 2022-09-30 13F MERCK COM 58933Y105 13,174 -445 -3.27 1,135 -8.62 0.5906
2022-07-29 2022-06-30 13F MERCK COM 58933Y105 13,619 18 0.13 1,242 19.19 0.5606
2022-01-19 2021-12-31 13F MERCK COM 58933Y105 13,601 -228 -1.65 1,042 0.29 0.4799
2021-10-14 2021-09-30 13F MERCK COM 58933Y105 13,829 501 3.76 1,039 0.19 0.5327
2021-07-16 2021-06-30 13F MERCK COM 58933Y105 13,328 1,438 12.09 1,037 13.09 0.5330
2021-04-19 2021-03-31 13F MERCK COM 58933Y105 11,890 78 0.66 917 -5.07 0.5217
2021-01-19 2020-12-31 13F MERCK COM 58933Y105 11,812 -10,533 -47.14 966 -47.90 0.6027
2020-10-09 2020-09-30 13F MERCK COM 58933Y105 22,345 358 1.63 1,854 9.06 1.2468
2020-07-22 2020-06-30 13F MERCK COM 58933Y105 21,987 -6,737 -23.45 1,700 -23.08 1.2236
2020-04-10 2020-03-31 13F MERCK COM 58933Y105 28,724 10,375 56.54 2,210 32.41 1.7317
2020-01-17 2019-12-31 13F MERCK COM 58933Y105 18,349 67 0.37 1,669 11.86 0.9882
2019-10-18 2019-09-30 13F MERCK COM 58933Y105 18,282 1 0.01 1,492 -4.54 1.0069
2019-07-15 2019-06-30 13F MERCK COM 58933Y105 18,281 -1,108 -5.71 1,563 -3.10 1.0581
2019-04-22 2019-03-31 13F MERCK COM 58933Y105 19,389 19,389 1,613 1.1698
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.