Merck & Co., Inc.
BG ˙ BUL ˙ US58933Y1055
SecurityBG:6MK / Merck & Co., Inc.
InstitutionUtah Retirement Systems
Latest Disclosed Ownership404,056 shares
Latest Disclosed Value $ 48,603,897
Utah Retirement Systems reports 2.94% decrease in ownership of 6MK / Merck & Co., Inc.

On May 15, 2026 - Utah Retirement Systems filed a 13F-HR form disclosing ownership of 404,056 shares of Merck & Co., Inc. (BG:6MK) valued at $48,603,897 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 416,297 shares of Merck & Co., Inc.. This represents a change in shares of -2.94% 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.

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)
2026-05-15 2026-03-31 13F MERCK COM 58933Y105 404,056 -12,241 -2.94 48,604 10.92 0.4968
2026-02-17 2025-12-31 13F MERCK COM 58933Y105 416,297 15 0.00 43,819 25.42 0.4169
2025-11-14 2025-09-30 13F MERCK COM 58933Y105 416,282 -920 -0.22 34,939 5.79 0.3394
2025-08-14 2025-06-30 13F MERCK COM 58933Y105 417,202 -2,942 -0.70 33,026 -12.43 0.3449
2025-05-15 2025-03-31 13F MERCK COM 58933Y105 420,144 -566 -0.13 37,712 -9.89 0.4350
2025-02-14 2024-12-31 13F MERCK COM 58933Y105 420,710 1,000 0.24 41,852 -12.19 0.4611
2024-11-14 2024-09-30 13F MERCK COM 58933Y105 419,710 1,900 0.45 47,662 -7.85 0.5378
2024-08-14 2024-06-30 13F MERCK COM 58933Y105 417,810 -23,100 -5.24 51,725 -11.09 0.6142
2024-05-15 2024-03-31 13F MERCK COM 58933Y105 440,910 100 0.02 58,178 21.06 0.6803
2024-02-14 2023-12-31 13F MERCK COM 58933Y105 440,810 2,700 0.62 48,057 6.55 0.6120
2023-11-14 2023-09-30 13F MERCK COM 58933Y105 438,110 2,000 0.46 45,103 -10.37 0.6447
2023-08-14 2023-06-30 13F MERCK COM 58933Y105 436,110 -14,600 -3.24 50,323 4.94 0.6978
2023-05-16 2023-03-31 13F MERCK COM 58933Y105 450,710 1,400 0.31 47,951 -3.81 0.6934
2023-02-15 2022-12-31 13F MERCK COM 58933Y105 449,310 -4,300 -0.95 49,851 27.61 0.7905
2022-11-14 2022-09-30 13F MERCK COM 58933Y105 453,610 2,200 0.49 39,065 -5.08 0.6514
2022-08-16 2022-06-30 13F MERCK COM 58933Y105 451,410 -800 -0.18 41,155 10.92 0.6589
2022-05-13 2022-03-31 13F MERCK COM 58933Y105 452,210 -7,500 -1.63 37,103 5.31 0.4938
2022-02-14 2021-12-31 13F MERCK COM 58933Y105 459,710 1,100 0.24 35,232 2.28 0.4354
2021-11-16 2021-09-30 13F MERCK COM 58933Y105 458,610 -24,400 -5.05 34,446 -8.30 0.4658
2021-08-16 2021-06-30 13F MERCK COM 58933Y105 483,010 -2,400 -0.49 37,564 0.38 0.4835
2021-05-17 2021-03-31 13F MERCK & CO. COM 58933Y105 485,410 -21,300 -4.20 37,421 -9.72 0.5216
2021-02-16 2020-12-31 13F MERCK & CO. COM 58933Y105 506,710 21,700 4.47 41,449 3.03 0.5883
2020-11-16 2020-09-30 13F MERCK & CO. COM 58933Y105 485,010 3,200 0.66 40,231 7.98 0.6678
2020-08-13 2020-06-30 13F/A-1 MERCK & CO. COM 58933Y105 481,810 -4,300 -0.88 37,259 -0.38 0.6839
2020-08-13 2020-06-30 13F MERCK & CO. COM 58933Y105 481,810 -4,300 37,259 683,853.3952
2020-05-15 2020-03-31 13F MERCK & CO. COM 58933Y105 486,110 -100 -0.02 37,401 -15.42 0.8091
2020-02-12 2019-12-31 13F MERCK COM 58933Y105 486,210 -3,600 -0.73 44,221 7.25 0.7774
2019-11-14 2019-09-30 13F MERCK COM 58933Y105 489,810 900 0.18 41,233 0.58 0.7846
2019-08-14 2019-06-30 13F MERCK COM 58933Y105 488,910 -2,857 -0.58 40,995 0.23 0.7851
2019-05-15 2019-03-31 13F MERCK COM 58933Y105 491,767 -2,143 -0.43 40,901 8.38 0.8106
2019-02-08 2018-12-31 13F MERCK COM 58933Y105 493,910 -1,400 -0.28 37,739 7.41 0.8533
2018-11-13 2018-09-30 13F MERCK COM 58933Y105 495,310 -3,500 -0.70 35,137 16.05 0.6807
2018-08-10 2018-06-30 13F MERCK COM 58933Y105 498,810 -11,600 -2.27 30,277 8.90 0.6267
2018-05-15 2018-03-31 13F MERCK COM 58933Y105 510,410 800 0.16 27,802 -3.04 0.5914
2018-02-14 2017-12-31 13F MERCK COM 58933Y105 509,610 6,900 1.37 28,675 -10.91 0.6026
2017-11-13 2017-09-30 13F MERCK COM 58933Y105 502,710 600 0.12 32,188 0.02 0.7239
2017-08-08 2017-06-30 13F MERCK COM 58933Y105 502,110 -6,100 -1.20 32,181 -0.34 0.7500
2017-05-11 2017-03-31 13F MERCK COM 58933Y105 508,210 500 0.10 32,292 8.04 0.7725
2017-02-10 2016-12-31 13F MERCK COM 58933Y105 507,710 0 0.00 29,889 -5.67 0.7518
2016-11-07 2016-09-30 13F MERCK COM 58933Y105 507,710 100 0.02 31,686 8.35 0.8201
2016-08-03 2016-06-30 13F MERCK COM 58933Y105 507,610 -1,000 -0.20 29,243 8.67 0.7793
2016-05-10 2016-03-31 13F MERCK & CO INC COM 58933Y105 508,610 1,800 0.36 26,911 0.53 0.7298
2016-02-11 2015-12-31 13F MERCK & CO INC COM 58933Y105 506,810 900 0.18 26,770 7.14 0.7257
2015-11-03 2015-09-30 13F MERCK & CO INC COM 58933Y105 505,910 2,700 0.54 24,987 -12.78 0.7155
2015-08-11 2015-06-30 13F MERCK & CO INC COM 58933Y105 503,210 -19,300 -3.69 28,648 -4.61 0.7614
2015-05-14 2015-03-31 13F MERCK & CO INC COM 58933Y105 522,510 16,600 3.28 30,034 4.54 0.7891
2015-02-11 2014-12-31 13F MERCK & CO INC COM 58933Y105 505,910 0 0.00 28,730 -4.20 0.7898
2014-11-06 2014-09-30 13F MERCK & CO INC COM 58933Y105 505,910 -1,100 -0.22 29,990 2.25 0.8599
2014-08-08 2014-06-30 13F MERCK & CO INC COM 58933Y105 507,010 -35,400 -6.53 29,331 -4.75 0.8402
2014-05-08 2014-03-31 13F MERCK & CO INC COM 58933Y105 542,410 3,900 0.72 30,793 14.25 0.8881
2014-02-05 2013-12-31 13F MERCK & CO INC COM 58933Y105 538,510 0 0.00 26,953 5.13 0.7974
2013-11-06 2013-09-30 13F MERCK & CO INC COM 58933Y105 538,510 -4,600 -0.85 25,638 1.63 0.8296
2013-08-02 2013-06-30 13F MERCK & CO INC COM 58933Y105 543,110 543,110 25,227 0.8523
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.