Kidder Stephen W reports 4.00% decrease in ownership of 6MK / Merck & Co., Inc.

Merck & Co., Inc.

DE ˙ XTRA ˙ US58933Y1055

102,78 € ↑2,84 (2,84%)

2026-06-04
AKTIENPREIS

Security	DE:6MK / Merck & Co., Inc.
Institution	Kidder Stephen W
Latest Disclosed Ownership	9,608 shares
Latest Disclosed Value	$ 1,155,746

On May 8, 2026 - Kidder Stephen W filed a 13F-HR form disclosing ownership of 9,608 shares of Merck & Co., Inc. (DE:6MK) valued at $1,001,154 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 14, 2026 disclosing 10,008 shares of Merck & Co., Inc.. This represents a change in shares of -4.00% during the quarter. The current value of the position is $987,510 USD.

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	Reported Shares	ΔShares	ΔShares (%)	Reported Value (x1000)	ΔValue (%)	Alloc (%)
2026-05-08	2026-03-31	13F	MERCK	COM	58933Y105	9,608	-400	-4.00	1,156	9.69	0.0726
2026-02-14	2025-12-31	13F	MERCK	COM	58933Y105	10,008	-246	-2.40	1,053	22.44	0.2970
2025-11-10	2025-09-30	13F	MERCK	COM	58933Y105	10,254	1,475	16.80	861	23.92	0.2467
2025-07-23	2025-06-30	13F	MERCK	COM	58933Y105	8,779	25	0.29	695	-11.59	0.2090
2025-05-06	2025-03-31	13F	MERCK	COM	58933Y105	8,754	0	0.00	786	-9.77	0.2450
2025-02-13	2024-12-31	13F	MERCK	COM	58933Y105	8,754	0	0.00	871	-12.47	0.2621
2024-11-12	2024-09-30	13F	MERCK	COM	58933Y105	8,754	-250	-2.78	994	-10.77	0.2936
2024-08-12	2024-06-30	13F	MERCK	COM	58933Y105	9,004	-100	-1.10	1,115	-7.24	0.3483
2024-05-14	2024-03-31	13F	MERCK	COM	58933Y105	9,104	-40	-0.44	1,201	20.58	0.3834
2024-02-14	2023-12-31	13F	MERCK	COM	58933Y105	9,144	-60	-0.65	997	5.17	0.3213
2023-11-14	2023-09-30	13F	MERCK	COM	58933Y105	9,204	0	0.00	948	-10.83	0.3287
2023-08-11	2023-06-30	13F	MERCK	COM	58933Y105	9,204	466	5.33	1,062	14.32	0.3477
2023-05-11	2023-03-31	13F	MERCK	COM	58933Y105	8,738	0	0.00	930	-4.13	0.3236
2023-02-09	2022-12-31	13F	MERCK	COM	58933Y105	8,738	4,400	101.43	969	159.79	0.3551
2022-11-08	2022-09-30	13F	MERCK	COM	58933Y105	4,338	163	3.90	373	-2.10	0.1522
2022-07-19	2022-06-30	13F	MERCK	COM	58933Y105	4,175	0	0.00	381	11.40	0.1475
2022-05-17	2022-03-31	13F	MERCK	COM	58933Y105	4,175	0	0.00	342	6.54	0.1105
2022-02-08	2021-12-31	13F	MERCK	COM	58933Y105	4,175	0	0.00	321	1.90	0.0975
2021-11-10	2021-09-30	13F	MERCK	COM	58933Y105	4,175	-214	-4.88	315	-7.35	0.0988
2021-08-09	2021-06-30	13F	MERCK	COM	58933Y105	4,389	-35	-0.79	340	-0.29	0.1049
2021-05-17	2021-03-31	13F	MERCK	COM	58933Y105	4,424	0	0.00	341	-5.80	0.1101
2021-02-16	2020-12-31	13F	MERCK	COM	58933Y105	4,424	-500	-10.15	362	-11.27	0.1205
2020-10-28	2020-09-30	13F	MERCK	COM	58933Y105	4,924	0	0.00	408	7.09	0.1447
2020-07-28	2020-06-30	13F	MERCK	COM	58933Y105	4,924	-25	-0.51	381	0.00	0.1453
2020-05-07	2020-03-31	13F	MERCK	COM	58933Y105	4,949	-1,931	-28.07	381	-39.04	0.1730
2020-01-15	2019-12-31	13F	MERCK	COM	58933Y105	6,880	-60	-0.86	625	7.02	0.2300
2019-11-07	2019-09-30	13F	MERCK	COM	58933Y105	6,940	-125	-1.77	584	-1.35	0.2301
2019-07-24	2019-06-30	13F	MERCK	COM	58933Y105	7,065	130	1.87	592	2.60	0.2371
2019-05-01	2019-03-31	13F	MERCK	COM	58933Y105	6,935	-1,075	-13.42	577	-5.87	0.2343
2019-01-24	2018-12-31	13F	MERCK	COM	58933Y105	8,010	-50	-0.62	613	7.17	0.2702
2018-10-15	2018-09-30	13F	MERCK	COM	58933Y105	8,060	0	0.00	572	16.73	0.2089
2018-07-30	2018-06-30	13F	MERCK	COM	58933Y105	8,060	-350	-4.16	490	6.99	0.1880
2018-04-24	2018-03-31	13F	MERCK	COM	58933Y105	8,410	-3,975	-32.10	458	-34.29	0.1749
2018-02-02	2017-12-31	13F	MERCK	COM	58933Y105	12,385	915	7.98	697	-5.04	0.2498
2017-10-26	2017-09-30	13F	MERCK	COM	58933Y105	11,470	-100	-0.86	734	-1.08	0.2704
2017-07-26	2017-06-30	13F	MERCK	COM	58933Y105	11,570	-160	-1.36	742	-0.54	0.2811
2017-05-15	2017-03-31	13F	MERCK	COM	58933Y105	11,730	-30	-0.26	746	7.65	0.2870
2017-02-14	2016-12-31	13F	MERCK	Common Stock	58933Y105	11,760	0	0.00	693	-5.71	0.2807
2016-11-15	2016-09-30	13F	MERCK	Common Stock	58933Y105	11,760	-1,400	-10.64	735	-3.03	0.2922
2016-08-08	2016-06-30	13F	MERCK	Common Stock	58933Y105	13,160	400	3.13	758	12.30	0.3018
2016-05-27	2016-03-31	13F	MERCK	Common Stock	58933Y105	12,760	0	0.00	675	0.00	0.2738
2016-02-12	2015-12-31	13F	MERCK	Common Stock	58933Y105	12,760	-25	-0.20	675	6.97	0.2886
2015-11-13	2015-09-30	13F	MERCK	Common Stock	58933Y105	12,785	0	0.00	631	-13.20	0.3161
2015-08-10	2015-06-30	13F	MERCK	Common Stock	58933Y105	12,785	0	0.00	727	-0.95	0.3282
2015-05-22	2015-03-31	13F	MERCK	Common Stock	58933Y105	12,785	160	1.27	734	2.37	0.3175
2015-02-13	2014-12-31	13F	MERCK	Common Stock	58933Y105	12,625	0	0.00	717	-4.14	0.3108
2014-11-24	2014-09-30	13F	MERCK	Common Stock	58933Y105	12,625	7,590	150.74	748	156.16	0.3399
2014-07-24	2014-06-30	13F	MERCK	Common Stock	58933Y105	5,035	-800	-13.71	292	-11.78	0.1940
2014-05-30	2014-03-31	13F	MERCK	Common Stock	58933Y105	5,835	0	0.00	331	13.36	0.2228
2014-05-29	2013-12-31	13F	MERCK	Common Stock	58933Y105	5,835	0	0.00	292	4.66	0.2008
2013-11-18	2013-09-30	13F	MERCK	Common Stock	58933Y105	5,835	-138	-2.31	279	0.72	0.2154
2013-08-19	2013-06-30	13F	MERCK	Common Stock	58933Y105	5,973	0	0.00	277	13.52	0.2231
2013-08-16	2012-12-31	13F	MERCK	Common Stock	58933Y105	5,973	5,973		244		0.2142

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.