Merck & Co., Inc.
BG ˙ BUL ˙ US58933Y1055
SecurityBG:6MK / Merck & Co., Inc.
InstitutionBollard Group LLC
Latest Disclosed Ownership138,765 shares
Latest Disclosed Value $ 16,692
Bollard Group LLC reports 5.07% increase in ownership of 6MK / Merck & Co., Inc.

On May 14, 2026 - Bollard Group LLC filed a 13F-HR form disclosing ownership of 138,765 shares of Merck & Co., Inc. (BG:6MK) valued at $16,692 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 132,074 shares of Merck & Co., Inc.. This represents a change in shares of 5.07% 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)
2026-05-14 2026-03-31 13F MERCK COM 58933Y105 138,765 6,691 5.07 17 23.08 0.4918
2026-02-13 2025-12-31 13F MERCK COM 58933Y105 132,074 -41,293 -23.82 14 -7.14 0.3474
2025-11-14 2025-09-30 13F MERCK COM 58933Y105 173,367 7,658 4.62 15 7.69 0.3420
2025-08-13 2025-06-30 13F Merck COM 58933Y105 165,709 9,827 6.30 13 0.00 0.2999
2025-05-15 2025-03-31 13F Merck COM 58933Y105 155,882 -88 -0.06 14 -13.33 0.3674
2025-02-14 2024-12-31 13F Merck COM 58933Y105 155,970 -28,509 -15.45 16 -25.00 0.4300
2024-11-13 2024-09-30 13F Merck COM 58933Y105 184,479 173 0.09 21 -9.09 0.5574
2024-08-14 2024-06-30 13F Merck COM 58933Y105 184,306 4,963 2.77 23 -4.35 0.6438
2024-05-13 2024-03-31 13F Merck COM 58933Y105 179,343 1,054 0.59 24 21.05 0.7158
2024-02-13 2023-12-31 13F Merck COM 58933Y105 178,289 1,119 0.63 19 5.56 0.6759
2023-11-14 2023-09-30 13F Merck COM 58933Y105 177,170 1,027 0.58 18 -10.00 0.6713
2023-08-14 2023-06-30 13F Merck COM 58933Y105 176,143 1,247 0.71 20 11.11 0.6914
2023-05-12 2023-03-31 13F Merck COM 58933Y105 174,896 5,990 3.55 19 0.00 0.6722
2023-02-10 2022-12-31 13F Merck COM 58933Y105 168,906 -2,530 -1.48 19 -99.88 0.7159
2022-11-09 2022-09-30 13F Merck COM 58933Y105 171,436 857 0.50 14,764 -5.07 0.6203
2022-08-12 2022-06-30 13F Merck COM 58933Y105 170,579 1,253 0.74 15,552 11.94 0.6302
2022-05-12 2022-03-31 13F Merck COM 58933Y105 169,326 7,402 4.57 13,893 11.95 0.4444
2022-02-11 2021-12-31 13F Merck COM 58933Y105 161,924 365 0.23 12,410 2.27 0.3973
2021-11-12 2021-09-30 13F Merck COM 58933Y105 161,559 6,746 4.36 12,135 0.79 0.3975
2021-08-12 2021-06-30 13F Merck COM 58933Y105 154,813 10,386 7.19 12,040 8.14 0.3818
2021-05-11 2021-03-31 13F Merck COM 58933Y105 144,427 611 0.42 11,134 -5.36 0.3901
2021-02-04 2020-12-31 13F Merck COM 58933Y105 143,816 -3,551 -2.41 11,764 -3.76 0.4381
2020-11-12 2020-09-30 13F Merck COM 58933Y105 147,367 17 0.01 12,224 7.28 0.4405
2020-08-13 2020-06-30 13F Merck COM 58933Y105 147,350 -11,141 -7.03 11,395 -6.55 0.4477
2020-05-14 2020-03-31 13F Merck COM 58933Y105 158,491 8,796 5.88 12,194 -10.44 0.5419
2020-02-10 2019-12-31 13F Merck COM 58933Y105 149,695 878 0.59 13,615 8.69 0.4420
2019-11-13 2019-09-30 13F Merck COM 58933Y105 148,817 9,392 6.74 12,527 7.15 0.4399
2019-08-13 2019-06-30 13F Merck COM 58933Y105 139,425 11,839 9.28 11,691 10.18 0.4028
2019-05-10 2019-03-31 13F Merck COM 58933Y105 127,586 14,125 12.45 10,611 22.39 0.4005
2019-02-05 2018-12-31 13F Merck COM 58933Y105 113,461 5,933 5.52 8,670 13.66 0.3824
2018-11-08 2018-09-30 13F Merck COM 58933Y105 107,528 6,699 6.64 7,628 24.64 0.3067
2018-08-09 2018-06-30 13F Merck COM 58933Y105 100,829 2,385 2.42 6,120 14.14 0.2811
2018-05-14 2018-03-31 13F Merck COM 58933Y105 98,444 6,793 7.41 5,362 3.98 0.2666
2018-01-29 2017-12-31 13F Merck COM 58933Y105 91,651 1,693 1.88 5,157 -10.47 0.2479
2017-10-27 2017-09-30 13F Merck COM 58933Y105 89,958 2,695 3.09 5,760 2.99 0.3037
2017-07-19 2017-06-30 13F Merck COM 58933Y105 87,263 1,026 1.19 5,593 2.08 0.3021
2017-04-19 2017-03-31 13F Merck COM 58933Y105 86,237 5,110 6.30 5,479 14.72 0.3142
2017-01-25 2016-12-31 13F Merck COM 58933Y105 81,127 1,245 1.56 4,776 -4.19 0.3115
2016-10-26 2016-09-30 13F Merck COM 58933Y105 79,882 1,528 1.95 4,985 10.43 0.3189
2016-07-20 2016-06-30 13F Merck COM 58933Y105 78,354 618 0.79 4,514 9.75 0.3084
2016-05-09 2016-03-31 13F Merck COM 58933Y105 77,736 647 0.84 4,113 1.01 0.3312
2016-02-04 2015-12-31 13F Merck COM 58933Y105 77,089 649 0.85 4,072 7.87 0.3352
2015-10-30 2015-09-30 13F Merck COM 58933Y105 76,440 577 0.76 3,775 -12.60 0.3096
2015-08-12 2015-06-30 13F Merck COM 58933Y105 75,863 71 0.09 4,319 -0.87 0.3262
2015-05-12 2015-03-31 13F Merck COM 58933Y105 75,792 4,158 5.80 4,357 7.10 0.3244
2015-02-12 2014-12-31 13F Merck COM 58933Y105 71,634 1,102 1.56 4,068 -2.70 0.3590
2014-11-14 2014-09-30 13F Merck COM 58933Y105 70,532 5,366 8.23 4,181 10.90 0.3948
2014-08-13 2014-06-30 13F Merck COM 58933Y105 65,166 188 0.29 3,770 2.20 0.3643
2014-05-14 2014-03-31 13F Merck COM 58933Y105 64,978 210 0.32 3,689 13.79 0.3731
2014-02-13 2013-12-31 13F Merck COM 58933Y105 64,768 3,962 6.52 3,242 11.99 0.3574
2013-11-12 2013-09-30 13F/A-1 Merck COM 58933Y105 60,806 -262 -0.43 2,895 2.04 0.3405
2013-11-05 2013-09-30 13F Merck COM 58933Y105 60,806 2,895
2013-08-12 2013-06-30 13F Merck COM 58933Y105 61,068 61,068 2,837 0.5458
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.