Merck & Co., Inc.
BG ˙ BUL ˙ US58933Y1055
SecurityBG:6MK / Merck & Co., Inc.
InstitutionConning Inc.
Latest Disclosed Ownership333,031 shares
Latest Disclosed Value $ 40,060,297
Conning Inc. reports 5.65% decrease in ownership of 6MK / Merck & Co., Inc.

On April 30, 2026 - Conning Inc. filed a 13F-HR form disclosing ownership of 333,031 shares of Merck & Co., Inc. (BG:6MK) valued at $40,060,297 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 352,977 shares of Merck & Co., Inc.. This represents a change in shares of -5.65% 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)
2026-04-30 2026-03-31 13F MERCK COM 58933Y105 333,031 -19,946 -5.65 40,060 7.82 1.3314
2026-02-05 2025-12-31 13F MERCK COM 58933Y105 352,977 -48,082 -11.99 37,154 10.38 1.2441
2025-10-28 2025-09-30 13F MERCK COM 58933Y105 401,059 366,481 1,059.87 33,661 1,129.81 1.1190
2025-07-24 2025-06-30 13F MERCK COM 58933Y105 34,578 -548 -1.56 2,737 -13.17 0.0940
2025-04-29 2025-03-31 13F MERCK COM 58933Y105 35,126 13 0.04 3,153 -9.76 0.1103
2025-01-28 2024-12-31 13F MERCK COM 58933Y105 35,113 -1,360 -3.73 3,493 -15.65 0.1224
2024-10-29 2024-09-30 13F MERCK COM 58933Y105 36,473 -212 -0.58 4,142 -8.81 0.1368
2024-07-26 2024-06-30 13F MERCK COM 58933Y105 36,685 459 1.27 4,542 -5.00 0.1635
2024-04-26 2024-03-31 13F MERCK COM 58933Y105 36,226 -2,529 -6.53 4,780 13.14 0.1567
2024-01-30 2023-12-31 13F MERCK COM 58933Y105 38,755 20 0.05 4,225 5.97 0.1470
2023-10-26 2023-09-30 13F MERCK COM 58933Y105 38,735 -2,556 -6.19 3,988 -16.31 0.1454
2023-07-21 2023-06-30 13F MERCK COM 58933Y105 41,291 -141 -0.34 4,765 8.10 0.1594
2023-04-27 2023-03-31 13F MERCK COM 58933Y105 41,432 -57,728 -58.22 4,408 -59.94 0.1474
2023-02-08 2022-12-31 13F MERCK COM 58933Y105 99,160 57,262 136.67 11,002 204.91 0.3576
2022-10-31 2022-09-30 13F MERCK COM 58933Y105 41,898 -2,024 -4.61 3,608 -9.89 0.1281
2022-07-20 2022-06-30 13F MERCK COM 58933Y105 43,922 -134 -0.30 4,004 10.76 0.1200
2022-05-02 2022-03-31 13F MERCK COM 58933Y105 44,056 -53 -0.12 3,615 6.92 0.0984
2022-01-27 2021-12-31 13F MERCK COM 58933Y105 44,109 -286 -0.64 3,381 1.38 0.0901
2021-11-05 2021-09-30 13F MERCK COM 58933Y105 44,395 -5,520 -11.06 3,335 -14.09 0.0957
2021-07-29 2021-06-30 13F MERCK COM 58933Y105 49,915 -3,819 -7.11 3,882 -6.28 0.1125
2021-04-23 2021-03-31 13F MERCK & CO. COM 58933Y105 53,734 -568,518 -91.36 4,142 -91.86 0.1246
2021-01-28 2020-12-31 13F MERCK & CO. COM 58933Y105 622,252 69,158 12.50 50,900 10.94 1.6159
2020-10-21 2020-09-30 13F MERCK & CO. COM 58933Y105 553,094 -17,686 -3.10 45,879 3.94 1.6151
2020-08-07 2020-06-30 13F MERCK & CO. COM 58933Y105 570,780 -23,867 -4.01 44,138 -3.53 1.6393
2020-04-29 2020-03-31 13F MERCK & CO. COM 58933Y105 594,647 21,816 3.81 45,752 -12.18 1.9472
2020-01-29 2019-12-31 13F MERCK COM 58933Y105 572,831 34,287 6.37 52,099 14.92 1.7075
2019-10-30 2019-09-30 13F MERCK COM 58933Y105 538,544 -32,231 -5.65 45,335 -5.27 1.5699
2019-07-25 2019-06-30 13F MERCK COM 58933Y105 570,775 -45,131 -7.33 47,859 -6.57 1.5832
2019-04-22 2019-03-31 13F MERCK COM 58933Y105 615,906 -35,495 -5.45 51,225 2.92 1.6011
2019-01-29 2018-12-31 13F MERCK COM 58933Y105 651,401 -100,937 -13.42 49,774 -6.74 1.6929
2018-10-26 2018-09-30 13F MERCK COM 58933Y105 752,338 -82,324 -9.86 53,371 5.34 1.5828
2018-07-25 2018-06-30 13F MERCK COM 58933Y105 834,662 13,358 1.63 50,664 13.25 1.5449
2018-05-03 2018-03-31 13F MERCK COM 58933Y105 821,304 105,349 14.71 44,736 11.04 1.4401
2018-01-30 2017-12-31 13F MERCK COM 58933Y105 715,955 94,610 15.23 40,287 1.26 1.3298
2017-10-20 2017-09-30 13F MERCK COM 58933Y105 621,345 26,270 4.41 39,785 4.32 1.3541
2017-08-03 2017-06-30 13F MERCK COM 58933Y105 595,075 7,948 1.35 38,138 2.23 1.3846
2017-04-27 2017-03-31 13F MERCK COM 58933Y105 587,127 40,113 7.33 37,306 15.85 1.3771
2017-02-02 2016-12-31 13F MERCK COM 58933Y105 547,014 15,486 2.91 32,203 -2.92 1.2842
2016-10-25 2016-09-30 13F MERCK COM 58933Y105 531,528 -67,223 -11.23 33,173 -3.83 1.3222
2016-07-26 2016-06-30 13F MERCK COM 58933Y105 598,751 -30,357 -4.83 34,494 3.63 1.4242
2016-04-26 2016-03-31 13F MERCK & CO INC COM 58933Y105 629,108 5,452 0.87 33,286 1.04 1.3972
2016-02-04 2015-12-31 13F MERCK & CO INC COM 58933Y105 623,656 10,901 1.78 32,942 8.85 1.4087
2015-10-23 2015-09-30 13F MERCK & CO INC COM 58933Y105 612,755 16,895 2.84 30,264 -10.78 1.3294
2015-08-03 2015-06-30 13F MERCK & CO INC COM 58933Y105 595,860 -1,040 -0.17 33,922 -1.13 1.3920
2015-04-24 2015-03-31 13F MERCK & CO INC COM 58933Y105 596,900 129,405 27.68 34,310 29.23 1.4585
2015-02-13 2014-12-31 13F MERCK & CO INC COM 58933Y105 467,495 27,677 6.29 26,549 1.83 1.2960
2014-11-07 2014-09-30 13F MERCK & CO INC COM 58933Y105 439,818 -4,362 -0.98 26,072 1.46 1.3660
2014-07-25 2014-06-30 13F MERCK & CO INC COM 58933Y105 444,180 4,479 1.02 25,696 2.94 1.3656
2014-04-25 2014-03-31 13F MERCK & CO INC COM 58933Y105 439,701 -41,402 -8.61 24,962 3.67 1.4657
2014-02-04 2013-12-31 13F MERCK & CO INC COM 58933Y105 481,103 63,621 15.24 24,079 21.15 1.4920
2013-11-04 2013-09-30 13F MERCK & CO INC COM 58933Y105 417,482 7,676 1.87 19,876 4.42 1.5346
2013-08-13 2013-06-30 13F MERCK & CO INC COM 58933Y105 409,806 409,806 19,035 1.5726
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.