Merck & Co., Inc.
BG ˙ BUL ˙ US58933Y1055
SecurityBG:6MK / Merck & Co., Inc.
InstitutionCohen & Steers, Inc.
Latest Disclosed Ownership2,400 shares
Latest Disclosed Value $ 289
Cohen & Steers, Inc. ownership in 6MK / Merck & Co., Inc.

On May 15, 2026 - Cohen & Steers, Inc. filed a 13F-HR form disclosing ownership of 2,400 shares of Merck & Co., Inc. (BG:6MK) valued at $289 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 2,400 shares of Merck & Co., Inc..

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)
2026-05-15 2026-03-31 13F Merck COM 58933Y105 2,400 0 0.00 0 0.0005
2026-02-13 2025-12-31 13F Merck COM 58933Y105 2,400 0 0.00 0 0.0005
2025-11-14 2025-09-30 13F Merck COM 58933Y105 2,400 0 0.00 0 0.0004
2025-08-14 2025-06-30 13F Merck COM 58933Y105 2,400 0 0.00 0 0.0003
2025-05-15 2025-03-31 13F Merck COM 58933Y105 2,400 -709 -22.80 0 0.0004
2025-02-13 2024-12-31 13F Merck COM 58933Y105 3,109 -224 -6.72 0 0.0006
2024-11-14 2024-09-30 13F Merck COM 58933Y105 3,333 64 1.96 0 0.0007
2024-08-13 2024-06-30 13F Merck COM 58933Y105 3,269 -63 -1.89 0 0.0008
2024-05-15 2024-03-31 13F Merck COM 58933Y105 3,332 604 22.14 0 0.0009
2024-02-14 2023-12-31 13F Merck COM 58933Y105 2,728 580 27.00 0 0.0006
2023-11-14 2023-09-30 13F Merck COM 58933Y105 2,148 0 0.00 0 0.0005
2023-08-14 2023-06-30 13F Merck COM 58933Y105 2,148 0 0.00 0 0.0005
2023-05-15 2023-03-31 13F Merck COM 58933Y105 2,148 0 0.00 0 -100.00 0.0005
2023-02-14 2022-12-31 13F Merck COM 58933Y105 2,148 0 0.00 238 28.65 0.0005
2022-11-14 2022-09-30 13F Merck COM 58933Y105 2,148 0 0.00 185 -5.61 0.0004
2022-08-15 2022-06-30 13F Merck COM 58933Y105 2,148 56 2.68 196 13.95 0.0004
2022-05-16 2022-03-31 13F Merck COM 58933Y105 2,092 0 0.00 172 7.50 0.0003
2022-02-14 2021-12-31 13F Merck COM 58933Y105 2,092 0 0.00 160 1.91 0.0003
2021-11-15 2021-09-30 13F Merck COM 58933Y105 2,092 0 0.00 157 -3.68 0.0003
2021-08-16 2021-06-30 13F Merck COM 58933Y105 2,092 0 0.00 163 1.24 0.0003
2021-05-17 2021-03-31 13F Merck COM 58933Y105 2,092 -104 -4.74 161 -10.56 0.0003
2021-02-16 2020-12-31 13F Merck COM 58933Y105 2,196 0 0.00 180 -1.10 0.0004
2020-11-16 2020-09-30 13F Merck COM 58933Y105 2,196 0 0.00 182 7.06 0.0005
2020-08-14 2020-06-30 13F Merck COM 58933Y105 2,196 0 0.00 170 0.59 0.0005
2020-05-15 2020-03-31 13F Merck COM 58933Y105 2,196 2,196 169 0.0005
2019-05-15 2019-03-31 13F Merck COM 58933Y105 0 -182,906 -100.00 0 -100.00
2019-02-14 2018-12-31 13F Merck COM 58933Y105 182,906 9,401 5.42 13,976 13.55 0.0445
2018-11-16 2018-09-30 13F/A-1 Merck COM 58933Y105 173,505 33,760 24.16 12,308 45.09 0.0358
2018-11-14 2018-09-30 13F Merck COM 58933Y105 173,505 33,760 12,308
2018-08-14 2018-06-30 13F Merck COM 58933Y105 139,745 139,745 8,483 0.0243
2017-05-15 2017-03-31 13F Merck COM 58933Y105 0 -2,215 -100.00 0 -100.00
2017-02-14 2016-12-31 13F Merck COM 58933Y105 2,215 -1,985 -47.26 130 -50.38 0.0004
2016-11-14 2016-09-30 13F Merck COM 58933Y105 4,200 -32,100 -88.43 262 -87.47 0.0007
2016-08-22 2016-06-30 13F/A-2 Merck COM 58933Y105 36,300 -263,000 -87.87 2,091 -86.80 0.0054
2016-08-18 2016-06-30 13F/A-1 Merck COM 58933Y105 1,556,700 1,520,400 19,863 0.0520
2016-08-15 2016-06-30 13F Merck COM 58933Y105 36,300 2,091
2016-05-16 2016-03-31 13F Merck COM 58933Y105 299,300 -10,600 -3.42 15,836 -3.26 0.0439
2016-02-16 2015-12-31 13F Merck COM 58933Y105 309,900 -700 -0.23 16,369 6.70 0.0470
2015-11-16 2015-09-30 13F Merck COM 58933Y105 310,600 -67,900 -17.94 15,341 -28.81 0.0464
2015-08-14 2015-06-30 13F Merck COM 58933Y105 378,500 42,900 12.78 21,548 11.71 0.0654
2015-05-15 2015-03-31 13F Merck COM 58933Y105 335,600 335,600 -3.17 19,290 16.89 0.0522
2014-02-14 2013-12-31 13F Merck COM 58933Y105 0 -346,600 -100.00 0 -100.00
2013-11-14 2013-09-30 13F Merck COM 58933Y105 346,600 -716,350 -67.39 16,502 -66.58 0.0533
2013-08-14 2013-06-30 13F Merck COM 58933Y105 1,062,950 1,062,950 49,374 0.1534
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.