Merck & Co., Inc.
BG ˙ BUL ˙ US58933Y1055
SecurityBG:6MK / Merck & Co., Inc.
InstitutionOxbow Advisors, LLC
Latest Disclosed Ownership3,283 shares
Latest Disclosed Value $ 394,922
Oxbow Advisors, LLC ownership in 6MK / Merck & Co., Inc.

On April 27, 2026 - Oxbow Advisors, LLC filed a 13F-HR form disclosing ownership of 3,283 shares of Merck & Co., Inc. (BG:6MK) valued at $394,922 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 4, 2026 disclosing 3,283 shares of Merck & Co., Inc.. This represents a change in shares of 0.00% 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)
2026-04-27 2026-03-31 13F MERCK COM 58933Y105 3,283 0 0.00 395 14.20 0.0336
2026-02-04 2025-12-31 13F MERCK COM 58933Y105 3,283 400 13.87 346 43.15 0.0304
2025-10-31 2025-09-30 13F MERCK COM 58933Y105 2,883 2,883 242 0.0225
2025-02-03 2024-12-31 13F MERCK COM 58933Y105 0 -49,278 -100.00 0 -100.00
2024-11-01 2024-09-30 13F MERCK COM 58933Y105 49,278 25,836 110.21 5,596 92.83 0.5551
2024-08-06 2024-06-30 13F MERCK COM 58933Y105 23,442 18,710 395.39 2,902 365.06 0.3405
2024-05-06 2024-03-31 13F MERCK COM 58933Y105 4,732 -2,962 -38.50 624 -25.54 0.0857
2024-02-08 2023-12-31 13F MERCK COM 58933Y105 7,694 17 0.22 839 6.08 0.1273
2023-11-14 2023-09-30 13F MERCK COM 58933Y105 7,677 -4,651 -37.73 790 -44.44 0.1244
2023-08-04 2023-06-30 13F MERCK COM 58933Y105 12,328 2,225 22.02 1,423 32.40 0.2235
2023-04-26 2023-03-31 13F MERCK COM 58933Y105 10,103 -1,036 -9.30 1,075 -13.04 0.1922
2023-02-01 2022-12-31 13F MERCK COM 58933Y105 11,139 1,419 14.60 1,236 47.55 0.2329
2022-11-03 2022-09-30 13F Merck & Co Inc COM 58933Y105 9,720 -282 -2.82 837 -8.22 0.1315
2022-08-10 2022-06-30 13F Merck & Co Inc COM 58933Y105 10,002 5,737 134.51 912 160.57 0.1295
2022-05-09 2022-03-31 13F Merck & Co Inc COM 58933Y105 4,265 -119,887 -96.56 350 -96.32 0.0352
2022-02-09 2021-12-31 13F Merck & Co Inc COM 58933Y105 124,152 -1,146 -0.91 9,515 1.11 0.9109
2021-11-10 2021-09-30 13F Merck & Co Inc COM 58933Y105 125,298 1,010 0.81 9,411 -2.64 0.9570
2021-08-04 2021-06-30 13F Merck & Co Inc COM 58933Y105 124,288 4,633 3.87 9,666 4.79 1.0049
2021-05-11 2021-03-31 13F Merck & Co Inc COM 58933Y105 119,655 816 0.69 9,224 -5.11 1.1230
2021-02-02 2020-12-31 13F Merck & Co Inc COM 58933Y105 118,839 -1,938 -1.60 9,721 -2.96 1.2445
2020-11-06 2020-09-30 13F Merck & Co Inc COM 58933Y105 120,777 58,214 93.05 10,018 107.07 1.2707
2020-08-12 2020-06-30 13F Merck & Co Inc COM 58933Y105 62,563 56,748 975.89 4,838 982.33 0.7043
2020-05-06 2020-03-31 13F Merck & Co Inc COM 58933Y105 5,815 -1,141 -16.40 447 -29.38 0.0752
2020-02-06 2019-12-31 13F Merck & Co Inc COM 58933Y105 6,956 820 13.36 633 22.44 0.0731
2019-10-31 2019-09-30 13F Merck & Co Inc COM 58933Y105 6,136 107 1.77 517 2.17 0.0687
2019-08-07 2019-06-30 13F Merck & Co Inc COM 58933Y105 6,029 -2,400 -28.47 506 -27.82 0.0609
2019-05-01 2019-03-31 13F Merck & Co Inc COM 58933Y105 8,429 0 0.00 701 8.85 0.0853
2019-02-12 2018-12-31 13F Merck & Co Inc COM 58933Y105 8,429 -310 -3.55 644 3.87 0.0861
2018-11-06 2018-09-30 13F Merck & Co Inc COM 58933Y105 8,739 -1,920 -18.01 620 -4.17 0.0748
2018-08-09 2018-06-30 13F Merck & Co Inc COM 58933Y105 10,659 0 0.00 647 11.36 0.0823
2018-04-30 2018-03-31 13F Merck & Co Inc COM 58933Y105 10,659 -352 -3.20 581 -6.29 0.1184
2018-01-30 2017-12-31 13F Merck & Co Inc COM 58933Y105 11,011 -399 -3.50 620 -15.18 0.1161
2017-10-23 2017-09-30 13F MERCK & CO INC COM 58933Y105 11,410 -85 -0.74 731 -0.81 0.1392
2017-07-21 2017-06-30 13F MERCK & CO INC COM 58933Y105 11,495 0 0.00 737 0.96 0.1302
2017-04-28 2017-03-31 13F MERCK & CO INC COM 58933Y105 11,495 1,820 18.81 730 28.07 0.1186
2017-01-26 2016-12-31 13F MERCK COM 58933Y105 9,675 0 0.00 570 -5.63 0.0712
2016-10-31 2016-09-30 13F MERCK COM 58933Y105 9,675 -205 -2.07 604 6.15 0.0829
2016-08-02 2016-06-30 13F MERCK COM 58933Y105 9,880 -300 -2.95 569 5.57 0.0815
2016-05-02 2016-03-31 13F MERCK & CO INC COM 58933Y105 10,180 -76,745 -88.29 539 -88.26 0.0763
2016-02-01 2015-12-31 13F MERCK & CO INC COM 58933Y105 86,925 17,062 24.42 4,591 33.07 0.5734
2015-11-03 2015-09-30 13F/A-1 MERCK & CO INC COM 58933Y105 69,863 -39,526 -36.13 3,450 -44.61 0.5678
2015-11-03 2015-09-30 13F MERCK & CO INC COM 58933Y105 69,368 3,426
2015-08-11 2015-06-30 13F MERCK & CO INC COM 58933Y105 109,389 -5,261 -4.59 6,228 -5.49 0.8048
2015-04-23 2015-03-31 13F MERCK & CO INC COM 58933Y105 114,650 5,908 5.43 6,590 6.72 0.9803
2015-01-21 2014-12-31 13F MERCK & CO INC COM 58933Y105 108,742 503 0.46 6,175 -3.76 0.8634
2014-10-21 2014-09-30 13F/A-1 MERCK & CO INC COM 58933Y105 108,239 -1,578 -1.44 6,416 0.99 0.9080
2014-10-20 2014-09-30 13F MERCK & CO INC COM 58933Y105 109,817 6,353
2014-07-18 2014-06-30 13F MERCK & CO INC COM 58933Y105 109,817 969 0.89 6,353 2.82 0.8438
2014-04-21 2014-03-31 13F MERCK & CO INC COM 58933Y105 108,848 -1,360 -1.23 6,179 12.02 0.9167
2014-01-21 2013-12-31 13F MERCK & CO INC COM 58933Y105 110,208 12,467 12.76 5,516 18.55 0.7776
2013-10-24 2013-09-30 13F MERCK & CO INC COM 58933Y105 97,741 -1,182 -1.19 4,653 1.26 0.7427
2013-07-30 2013-06-30 13F MERCK & CO INC COM 58933Y105 98,923 98,923 4,595 0.8054
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.