머크 앤 컴퍼니(Merck & Co., Inc.)
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionDaiwa Securities Group Inc.
Latest Disclosed Ownership513,752 shares
Latest Disclosed Value $ 61,799,228
Daiwa Securities Group Inc. reports 4.33% increase in ownership of MRK / Merck & Co., Inc.

On May 13, 2026 - Daiwa Securities Group Inc. filed a 13F-HR form disclosing ownership of 513,752 shares of Merck & Co., Inc. (MX:MRK) valued at $61,799,228 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 492,451 shares of Merck & Co., Inc.. This represents a change in shares of 4.33% 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)
2026-05-13 2026-03-31 13F MERCK COM 58933Y105 513,752 21,301 4.33 61,799 121,074.51 0.1043
2026-02-10 2025-12-31 13F MERCK COM 58933Y105 492,451 -72,786 -12.88 52 8.51 0.1656
2025-11-14 2025-09-30 13F MERCK COM 58933Y105 565,237 8,257 1.48 47 6.82 0.1601
2025-08-14 2025-06-30 13F MERCK COM 58933Y105 556,980 27,454 5.18 44 -6.38 0.1627
2025-05-13 2025-03-31 13F MERCK COM 58933Y105 529,526 92,429 21.15 48 9.30 0.2009
2025-02-07 2024-12-31 13F MERCK COM 58933Y105 437,097 -294 -0.07 43 -12.24 0.1942
2024-11-12 2024-09-30 13F MERCK COM 58933Y105 437,391 57,614 15.17 50 4.26 0.2294
2024-08-07 2024-06-30 13F MERCK COM 58933Y105 379,777 28,401 8.08 47 2.17 0.2501
2024-05-02 2024-03-31 13F MERCK COM 58933Y105 351,376 30,387 9.47 46 35.29 0.2616
2024-01-31 2023-12-31 13F MERCK COM 58933Y105 320,989 17,468 5.76 35 9.68 0.2177
2023-11-01 2023-09-30 13F MERCK COM 58933Y105 303,521 21,875 7.77 31 -3.12 0.2226
2023-07-31 2023-06-30 13F MERCK COM 58933Y105 281,646 7,337 2.67 32 10.34 0.2149
2023-05-02 2023-03-31 13F MERCK COM 58933Y105 274,309 24,195 9.67 29 7.41 0.2029
2023-02-06 2022-12-31 13F MERCK COM 58933Y105 250,114 13,804 5.84 28 -99.87 0.2131
2022-11-02 2022-09-30 13F MERCK COM 58933Y105 236,310 -29,123 -10.97 20,351 -15.90 0.1691
2022-08-09 2022-06-30 13F MERCK COM 58933Y105 265,433 42,200 18.90 24,199 32.12 0.1849
2022-04-29 2022-03-31 13F MERCK COM 58933Y105 223,233 20,759 10.25 18,316 18.03 0.0847
2022-02-03 2021-12-31 13F MERCK COM 58933Y105 202,474 8,057 4.14 15,518 6.27 0.0913
2021-11-05 2021-09-30 13F MERCK COM 58933Y105 194,417 -3,594 -1.82 14,603 -5.17 0.0960
2021-08-06 2021-06-30 13F MERCK COM 58933Y105 198,011 8,242 4.34 15,399 5.26 0.1037
2021-05-03 2021-03-31 13F MERCK COM 58933Y105 189,769 2,197 1.17 14,629 -4.65 0.1089
2021-02-04 2020-12-31 13F MERCK COM 58933Y105 187,572 2,392 1.29 15,343 -0.12 0.1186
2020-11-02 2020-09-30 13F MERCK COM 58933Y105 185,180 11,072 6.36 15,361 20.10 0.1391
2020-08-11 2020-06-30 13F MERCK COM 58933Y105 174,108 0 0.00 12,790 -4.52 0.2697
2020-05-14 2020-03-31 13F MERCK COM 58933Y105 174,108 1,587 0.92 13,396 -14.63 0.1390
2020-01-31 2019-12-31 13F MERCK COM 58933Y105 172,521 -18,936 -9.89 15,691 -2.64 0.1295
2019-11-04 2019-09-30 13F MERCK COM 58933Y105 191,457 37,736 24.55 16,117 25.03 0.1365
2019-07-24 2019-06-30 13F MERCK COM 58933Y105 153,721 -7,830 -4.85 12,890 -4.06 0.1139
2019-04-26 2019-03-31 13F MERCK COM 58933Y105 161,551 -183 -0.11 13,436 8.72 0.1174
2019-02-05 2018-12-31 13F MERCK COM 58933Y105 161,734 8,120 5.29 12,358 13.41 0.1185
2018-11-01 2018-09-30 13F MERCK COM 58933Y105 153,614 16,639 12.15 10,897 31.07 0.0913
2018-07-30 2018-06-30 13F MERCK COM 58933Y105 136,975 33,397 32.24 8,314 18.75 0.0655
2018-05-02 2018-03-31 13F MERCK COM 58933Y105 103,578 -14,829 -12.52 7,001 5.09 0.0561
2018-02-06 2017-12-31 13F MERCK COM 58933Y105 118,407 29,960 33.87 6,662 17.64 0.0471
2017-11-02 2017-09-30 13F MERCK COM 58933Y105 88,447 -33,681 -27.58 5,663 -27.65 0.0388
2017-07-28 2017-06-30 13F MERCK COM 58933Y105 122,128 5,010 4.28 7,827 5.17 0.0506
2017-05-02 2017-03-31 13F MERCK COM 58933Y105 117,118 -1,595 -1.34 7,442 6.50 0.0468
2017-02-01 2016-12-31 13F MERCK COM 58933Y105 118,713 2,515 2.16 6,988 -3.64 0.0448
2017-01-10 2016-09-30 13F/A-1 MERCK COM 58933Y105 116,198 -24,978 -17.69 7,252 -10.83 0.0433
2016-11-04 2016-09-30 13F MERCK COM 58933Y105 116,198 7,252
2016-07-25 2016-06-30 13F MERCK COM 58933Y105 141,176 5,810 4.29 8,133 13.56 0.0486
2016-05-12 2016-03-31 13F MERCK COM 58933Y105 135,366 -120,750 -47.15 7,162 -47.06 0.0453
2016-02-04 2015-12-31 13F MERCK COM 58933Y105 256,116 -76,140 -22.92 13,529 -17.56 0.0895
2015-11-10 2015-09-30 13F MERCK COM 58933Y105 332,256 71,898 27.62 16,411 10.72 0.1168
2015-08-05 2015-06-30 13F MERCK COM 58933Y105 260,358 9,260 3.69 14,822 2.70 0.1053
2015-05-12 2015-03-31 13F MERCK COM 58933Y105 251,098 71,100 39.50 14,433 41.20 0.0966
2015-02-13 2014-12-31 13F MERCK COM 58933Y105 179,998 96,350 115.19 10,222 106.13 0.0722
2014-11-12 2014-09-30 13F MERCK COM 58933Y105 83,648 4,090 5.14 4,959 7.76 0.0376
2014-08-13 2014-06-30 13F/A-1 MERCK COM 58933Y105 79,558 -500 -0.62 4,602 1.25 0.0343
2014-08-13 2014-06-30 13F MERCK COM 58933Y105 79,558 4,602
2014-05-14 2014-03-31 13F/A-1 MERCK COM 58933Y105 80,058 -2,000 4,545 0.0356
2014-05-15 2014-03-31 13F/A-2 MERCK COM 58933Y105 80,058 -2,000 -2.44 4,545 10.66 0.0356
2014-05-13 2014-03-31 13F MERCK COM 58933Y105 80,058 4,545
2014-02-13 2013-12-31 13F MERCK COM 58933Y105 82,058 -13,000 -13.68 4,107 -9.24 0.0349
2013-11-14 2013-09-30 13F MERCK COM 58933Y105 95,058 -3,500 -3.55 4,525 -1.16 0.0360
2013-08-16 2013-06-30 13F/A-1 MERCK COM 58933Y105 98,558 98,558 4,578 0.0347
2013-08-13 2013-06-30 13F MERCK COM 58933Y105 98,558 4,578
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.