Merck & Co., Inc.
BG ˙ BUL ˙ US58933Y1055
SecurityBG:6MK / Merck & Co., Inc.
InstitutionEngineers Gate Manager LP
Latest Disclosed Ownership3,877 shares
Latest Disclosed Value $ 466,364
Engineers Gate Manager LP reports 93.69% decrease in ownership of 6MK / Merck & Co., Inc.

On May 15, 2026 - Engineers Gate Manager LP filed a 13F-HR form disclosing ownership of 3,877 shares of Merck & Co., Inc. (BG:6MK) valued at $466,364 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 61,410 shares of Merck & Co., Inc.. This represents a change in shares of -93.69% 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 3,877 -57,533 -93.69 466 -92.79 0.0058
2026-02-17 2025-12-31 13F MERCK COM 58933Y105 61,410 -19,852 -24.43 6,464 -5.22 0.0767
2025-11-14 2025-09-30 13F MERCK COM 58933Y105 81,262 78,640 2,999.24 6,820 3,194.69 0.0781
2025-08-14 2025-06-30 13F MERCK COM 58933Y105 2,622 -220,342 -98.82 208 -98.97 0.0026
2025-05-15 2025-03-31 13F MERCK COM 58933Y105 222,964 152,393 215.94 20,013 185.09 0.3374
2025-02-14 2024-12-31 13F MERCK COM 58933Y105 70,571 -14,129 -16.68 7,020 -27.01 0.1222
2024-11-14 2024-09-30 13F MERCK COM 58933Y105 84,700 -75,050 -46.98 9,619 -51.37 0.1877
2024-08-14 2024-06-30 13F MERCK COM 58933Y105 159,750 148,648 1,338.93 19,777 1,250.89 0.4460
2024-05-15 2024-03-31 13F MERCK COM 58933Y105 11,102 -9,921 -47.19 1,465 -36.10 0.0386
2024-02-14 2023-12-31 13F MERCK COM 58933Y105 21,023 -64,938 -75.54 2,292 -74.11 0.0654
2023-11-14 2023-09-30 13F MERCK COM 58933Y105 85,961 85,961 8,850 0.3271
2023-02-14 2022-12-31 13F MERCK COM 58933Y105 0 -5,322 -100.00 0 -100.00
2022-11-14 2022-09-30 13F MERCK COM 58933Y105 5,322 1,881 54.66 458 45.86 0.0285
2022-08-15 2022-06-30 13F MERCK COM 58933Y105 3,441 -10,054 -74.50 314 -71.64 0.0115
2022-05-16 2022-03-31 13F MERCK COM 58933Y105 13,495 -32,152 -70.44 1,107 -68.35 0.0433
2022-02-14 2021-12-31 13F MERCK COM 58933Y105 45,647 23,613 107.17 3,498 111.36 0.1573
2021-11-15 2021-09-30 13F MERCK COM 58933Y105 22,034 22,034 1,655 0.0943
2021-08-16 2021-06-30 13F MERCK & CO. COM 58933Y105 0 -10,257 -100.00 0 -100.00
2021-05-17 2021-03-31 13F MERCK & CO. COM 58933Y105 10,257 -120,387 -92.15 791 -92.60 0.0392
2021-02-16 2020-12-31 13F MERCK & CO. COM 58933Y105 130,644 84,305 181.93 10,687 178.02 0.4634
2020-11-16 2020-09-30 13F MERCK & CO. COM 58933Y105 46,339 -47,188 -50.45 3,844 -46.85 0.1804
2020-08-17 2020-06-30 13F MERCK & CO. COM 58933Y105 93,527 73,763 373.22 7,232 375.48 0.3680
2020-05-15 2020-03-31 13F MERCK & CO. COM 58933Y105 19,764 8,467 74.95 1,521 48.10 0.1096
2020-02-14 2019-12-31 13F MERCK COM 58933Y105 11,297 -3,598 -24.16 1,027 -18.10 0.0452
2019-11-14 2019-09-30 13F MERCK COM 58933Y105 14,895 8,634 137.90 1,254 138.86 0.0637
2019-08-14 2019-06-30 13F MERCK COM 58933Y105 6,261 3,261 108.70 525 110.00 0.0290
2019-05-15 2019-03-31 13F MERCK COM 58933Y105 3,000 3,000 250 0.0151
2018-08-03 2018-06-30 13F MERCK COM 58933Y105 0 -130,454 -100.00 0 -100.00
2018-05-07 2018-03-31 13F MERCK COM 58933Y105 130,454 110,332 548.32 7,106 527.74 0.4736
2018-02-01 2017-12-31 13F MERCK COM 58933Y105 20,122 12,429 161.56 1,132 129.61 0.0777
2017-11-13 2017-09-30 13F MERCK COM 58933Y105 7,693 7,693 493 0.0415
2017-08-10 2017-06-30 13F MERCK COM 58933Y105 0 -28,300 -100.00 0 -100.00
2017-05-05 2017-03-31 13F MERCK COM 58933Y105 28,300 11,700 70.48 1,798 84.03 0.1785
2017-02-10 2016-12-31 13F MERCK COM 58933Y105 16,600 16,600 977 0.1048
2016-11-09 2016-09-30 13F MERCK COM 58933Y105 0 -5,400 -100.00 0 -100.00
2016-08-11 2016-06-30 13F MERCK COM 58933Y105 5,400 955 21.48 311 32.34 0.0223
2016-05-09 2016-03-31 13F MERCK & CO INC COM 58933Y105 4,445 4,445 0.00 235 0.0183
2016-02-05 2015-12-31 13F MERCK & CO INC COM 58933Y105 0 0 0 0.0000
2015-11-16 2015-09-30 13F MERCK & CO INC COM 58933Y105 0 -4,882 -100.00 0 -100.00
2015-08-14 2015-06-30 13F MERCK & CO INC COM 58933Y105 4,882 -12,574 -72.03 278 -72.28 0.0272
2015-05-15 2015-03-31 13F MERCK & CO INC COM 58933Y105 17,456 -107 -0.61 1,003 0.60 0.1334
2015-02-17 2014-12-31 13F MERCK & CO INC COM 58933Y105 17,563 17,563 997 0.2839
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.