默克公司
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionCerity Partners LLC
Latest Disclosed Ownership1,639,510 shares
Latest Disclosed Value $ 197,214,002
Cerity Partners LLC reports 4.65% decrease in ownership of MRK / Merck & Co., Inc.

On May 15, 2026 - Cerity Partners LLC filed a 13F-HR form disclosing ownership of 1,639,510 shares of Merck & Co., Inc. (MX:MRK) valued at $197,214,002 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 1,719,450 shares of Merck & Co., Inc.. This represents a change in shares of -4.65% 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)
2026-05-15 2026-03-31 13F MERCK COM 58933Y105 1,639,510 -79,940 -4.65 197,214 8.96 0.1384
2026-02-11 2025-12-31 13F MERCK COM 58933Y105 1,719,450 9,824 0.57 180,991 26.14 0.2637
2025-10-22 2025-09-30 13F MERCK COM 58933Y105 1,709,626 -277,099 -13.95 143,489 -8.78 0.2327
2025-08-13 2025-06-30 13F MERCK Equities 58933Y105 1,986,725 903 0.05 157,303 -11.77 0.2805
2025-04-30 2025-03-31 13F MERCK COM 58933Y105 1,985,822 211,541 11.92 178,279 -3.09 0.3611
2025-02-13 2024-12-31 13F MERCK COM 58933Y105 1,774,281 -113,531 -6.01 183,969 -14.20 0.3991
2024-11-12 2024-09-30 13F MERCK Stock 58933Y105 1,887,812 339,724 21.94 214,425 11.88 0.4748
2024-08-13 2024-06-30 13F MERCK COM 58933Y105 1,548,088 -258,914 -14.33 191,663 -19.67 0.5047
2024-05-14 2024-03-31 13F MERCK COM 58933Y105 1,807,002 596,406 49.27 238,609 80.46 0.6302
2024-01-26 2023-12-31 13F MERCK COM 58933Y105 1,210,596 340,073 39.07 132,221 47.17 0.4344
2023-11-14 2023-09-30 13F MERCK COM 58933Y105 870,523 -218,760 -20.08 89,844 -28.65 0.4369
2023-08-14 2023-06-30 13F MERCK COM 58933Y105 1,089,283 61,350 5.97 125,912 1.43 0.4903
2023-05-11 2023-03-31 13F MERCK COM 58933Y105 1,027,933 30,970 3.11 124,134 10.61 0.2927
2023-02-15 2022-12-31 13F MERCK COM 58933Y105 996,963 501,174 101.09 112,223 161.77 0.7187
2022-11-14 2022-09-30 13F MERCK Equities 58933Y105 495,789 17,262 3.61 42,870 -2.12 0.5153
2022-08-10 2022-06-30 13F MERCK COM 58933Y105 478,527 148,931 45.19 43,797 65.25 0.4841
2022-04-25 2022-03-31 13F MERCK COM 58933Y105 329,596 -19,045 -5.46 26,503 1.11 0.4117
2022-02-14 2021-12-31 13F MERCK Stock 58933Y105 348,641 23,707 7.30 26,212 7.40 0.3989
2021-10-25 2021-09-30 13F Merck Stock 58933Y105 324,934 -3,594 -1.09 24,406 -4.48 0.5370
2021-08-11 2021-06-30 13F MERCK Stock 58933Y105 328,528 7,291 2.27 25,550 3.17 0.5592
2021-08-11 2021-03-31 13F/A-1 MERCK Stock 58933Y105 321,237 195,250 154.98 24,764 140.29 0.5882
2021-05-12 2021-03-31 13F MERCK & CO. Stock 58933Y105 118,459 -7,528 9,132 0.2705
2021-02-11 2020-12-31 13F MERCK & CO. Common Stock 58933Y105 125,987 26,794 27.01 10,306 25.27 0.3304
2020-11-12 2020-09-30 13F MERCK & CO. Common Stock 58933Y105 99,193 42,904 76.22 8,227 89.00 0.3384
2020-08-17 2020-06-30 13F/A-1 MERCK & CO. COM 58933Y105 56,289 -65,815 -53.90 4,353 -53.67 0.2405
2020-08-14 2020-06-30 13F MERCK & CO. COM 58933Y105 56,672 -65,432 4,383 241,732.9323
2020-05-14 2020-03-31 13F MERCK & CO. COM 58933Y105 122,104 5,258 4.50 9,396 -11.59 0.5916
2020-02-14 2019-12-31 13F MERCK COM 58933Y105 116,846 -9,040 -7.18 10,628 0.29 0.5418
2019-10-30 2019-09-30 13F MERCK COM 58933Y105 125,886 -10,276 -7.55 10,597 -7.18 0.6220
2019-08-14 2019-06-30 13F MERCK COM 58933Y105 136,162 65,112 91.64 11,417 93.21 0.7198
2019-05-14 2019-03-31 13F MERCK COM 58933Y105 71,050 -7,096 -9.08 5,909 -1.04 0.3978
2019-02-06 2018-12-31 13F MERCK COM 58933Y105 78,146 -1,068 -1.35 5,971 6.26 0.3999
2018-11-15 2018-09-30 13F MERCK COM 58933Y105 79,214 -2,010 -2.47 5,619 13.98 0.3892
2018-08-15 2018-06-30 13F MERCK COM 58933Y105 81,224 -4,675 -5.44 4,930 5.36 0.3642
2018-05-15 2018-03-31 13F MERCK COM 58933Y105 85,899 -10,440 -10.84 4,679 -13.69 0.3578
2018-02-14 2017-12-31 13F Merck and COM 58933Y105 96,339 -771 -0.79 5,421 -12.82 0.3638
2017-11-13 2017-09-30 13F MERCK COM 58933Y105 97,110 26,321 37.18 6,218 37.05 0.4401
2017-08-10 2017-06-30 13F Merck and COM 58933Y105 70,789 3,300 4.89 4,537 5.81 0.3800
2017-05-02 2017-03-31 13F Merck and COM 58933Y105 67,489 67,489 4,288 0.3580
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.