Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionSavant Capital, LLC
Latest Disclosed Ownership106,935 shares
Latest Disclosed Value $ 12,863,172
Savant Capital, LLC ownership in MRK / Merck & Co., Inc.

On May 4, 2026 - Savant Capital, LLC filed a 13F-HR form disclosing ownership of 106,935 shares of Merck & Co., Inc. (MX:MRK) valued at $12,863,172 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 88,272 shares of Merck & Co., Inc.. This represents a change in shares of 21.14% during the quarter.

Savant Capital, LLC has a history of taking positions in derivatives of the underlying security (MRK) in the form of stock options. The firm currently holds call options representing 0 of underlying shares valued at $0 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

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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Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

MX:MRK / Merck & Co., Inc. Historical Put/Call Ratio
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)
2026-05-04 2026-03-31 13F MERCK COM 58933Y105 106,935 18,663 21.14 12,863 38.45 0.0622
2026-02-10 2025-12-31 13F MERCK COM 58933Y105 88,272 4,784 5.73 9,292 32.60 0.0528
2026-03-04 2025-09-30 13F/A-1 MERCK COM 58933Y105 83,488 1,247 1.52 7,007 7.63 0.0425
2025-11-05 2025-09-30 13F MERCK COM 58933Y105 225,948 34,243 18,964 0.1003
2026-03-04 2025-06-30 13F/A-1 MERCK COM 58933Y105 82,241 3,812 4.86 6,510 -7.52 0.0468
2025-08-06 2025-06-30 13F MERCK COM 58933Y105 191,705 8,643 15,175 0.0941
2026-03-04 2025-03-31 13F/A-1 MERCK COM 58933Y105 78,429 -75,080 -48.91 7,040 -53.91 0.0596
2025-05-08 2025-03-31 13F MERCK COM 58933Y105 183,062 29,553 16,432 0.1192
2025-01-29 2024-12-31 13F MERCK COM 58933Y105 153,509 17,351 12.74 15,271 -1.24 0.1200
2024-11-04 2024-09-30 13F MERCK COM 58933Y105 136,158 22,118 19.39 15,462 9.52 0.1283
2024-08-05 2024-06-30 13F MERCK COM 58933Y105 114,040 -5,711 -4.77 14,118 -10.65 0.1413
2024-05-06 2024-03-31 13F MERCK COM 58933Y105 119,751 4,102 3.55 15,801 25.33 0.1813
2024-02-05 2023-12-31 13F MERCK COM 58933Y105 115,649 3,641 3.25 12,608 9.34 0.1625
2023-11-07 2023-09-30 13F MERCK COM 58933Y105 112,008 5,920 5.58 11,531 -5.80 0.1720
2023-08-04 2023-06-30 13F MERCK COM 58933Y105 106,088 54,868 107.12 12,242 124.65 0.1914
2023-05-03 2023-03-31 13F MERCK COM 58933Y105 51,220 4,981 10.77 5,449 21.68 0.1015
2023-02-13 2022-12-31 13F/A-1 MERCK COM 58933Y105 46,239 8,085 21.19 4,479 36.28 0.1094
2023-02-07 2022-12-31 13F MERCK COM 58933Y105 46,239 8,085 4,479 0.1093
2022-10-31 2022-09-30 13F MERCK COM 58933Y105 38,154 -294 -0.76 3,286 -6.25 0.1024
2022-07-22 2022-06-30 13F MERCK COM 58933Y105 38,448 4,424 13.00 3,505 25.54 0.1063
2022-05-05 2022-03-31 13F MERCK COM 58933Y105 34,024 1,526 4.70 2,792 12.08 0.0915
2022-02-08 2021-12-31 13F MERCK COM 58933Y105 32,498 760 2.39 2,491 4.49 0.0806
2021-11-12 2021-09-30 13F MERCK COM 58933Y105 31,738 -2,144 -6.33 2,384 -9.53 0.0870
2021-08-04 2021-06-30 13F MERCK COM 58933Y105 33,882 191 0.57 2,635 1.46 0.1063
2021-05-04 2021-03-31 13F MERCK & CO. COM 58933Y105 33,691 -1,191 -3.41 2,597 -8.97 0.1392
2021-02-03 2020-12-31 13F MERCK & CO. COM 58933Y105 34,882 1,884 5.71 2,853 4.24 0.1660
2020-11-04 2020-09-30 13F MERCK & CO. COM 58933Y105 32,998 -1,252 -3.66 2,737 3.32 0.1872
2020-08-11 2020-06-30 13F MERCK & CO. COM 58933Y105 34,250 183 0.54 2,649 1.07 0.2006
2020-04-30 2020-03-31 13F MERCK & CO. COM 58933Y105 34,067 9,676 39.67 2,621 18.17 0.2487
2020-01-31 2019-12-31 13F MERCK COM 58933Y105 24,391 747 3.16 2,218 11.46 0.2720
2019-11-12 2019-09-30 13F MERCK COM 58933Y105 23,644 1,528 6.91 1,990 7.34 0.2763
2019-08-06 2019-06-30 13F MERCK COM 58933Y105 22,116 -128 -0.58 1,854 0.22 0.2612
2019-05-02 2019-03-31 13F MERCK COM 58933Y105 22,244 257 1.17 1,850 10.12 0.3473
2019-02-05 2018-12-31 13F MERCK COM 58933Y105 21,987 2,544 13.08 1,680 21.83 0.3517
2018-10-22 2018-09-30 13F MERCK COM 58933Y105 19,443 128 0.66 1,379 17.66 0.2476
2018-08-07 2018-06-30 13F MERCK COM 58933Y105 19,315 42 0.22 1,172 11.62 0.2503
2018-04-27 2018-03-31 13F MERCK COM 58933Y105 19,273 734 3.96 1,050 0.67 0.2215
2018-01-30 2017-12-31 13F MERCK COM 58933Y105 18,539 166 0.90 1,043 -11.31 0.2194
2017-10-31 2017-09-30 13F MERCK COM 58933Y105 18,373 119 0.65 1,176 0.51 0.2638
2017-08-03 2017-06-30 13F MERCK COM 58933Y105 18,254 -1,611 -8.11 1,170 -7.29 0.2764
2017-05-09 2017-03-31 13F MERCK COM 58933Y105 19,865 1,426 7.73 1,262 16.31 0.3120
2017-01-11 2016-12-31 13F MERCK COM 58933Y105 18,439 -6 -0.03 1,085 -5.73 0.2914
2016-10-28 2016-09-30 13F MERCK COM 58933Y105 18,445 20 0.11 1,151 8.48 0.3163
2016-07-28 2016-06-30 13F MERCK COM 58933Y105 18,425 572 3.20 1,061 12.28 0.3035
2016-05-11 2016-03-31 13F MERCK & CO INC COM 58933Y105 17,853 -930 -4.95 945 -4.74 0.2870
2016-02-02 2015-12-31 13F MERCK & CO INC COM 58933Y105 18,783 4,475 31.28 992 40.31 0.3094
2015-11-06 2015-09-30 13F MERCK & CO INC COM 58933Y105 14,308 -30 -0.21 707 -13.36 0.2532
2015-08-11 2015-06-30 13F MERCK & CO INC COM 58933Y105 14,338 -272 -1.86 816 -2.86 0.2745
2015-05-13 2015-03-31 13F MERCK & CO INC COM 58933Y105 14,610 3,536 31.93 840 33.55 0.2974
2015-02-09 2014-12-31 13F MERCK & CO INC COM 58933Y105 11,074 50 0.45 629 -3.68 0.2383
2014-10-28 2014-09-30 13F MERCK & CO INC COM 58933Y105 11,024 3,267 42.12 653 45.43 0.2777
2014-08-05 2014-06-30 13F MERCK & CO INC COM 58933Y105 7,757 0 0.00 449 2.05 0.1942
2014-05-13 2014-03-31 13F MERCK & CO INC COM 58933Y105 7,757 180 2.38 440 16.09 0.2038
2014-01-28 2013-12-31 13F MERCK & CO INC COM 58933Y105 7,577 -37 -0.49 379 4.70 0.1858
2013-11-01 2013-09-30 13F MERCK & CO INC COM 58933Y105 7,614 -95 -1.23 362 1.12 0.1971
2013-07-29 2013-06-30 13F MERCK & CO INC COM 58933Y105 7,709 7,709 358 0.2077
Disclosed Call Options
File
Date
Effective
Date
Form Security Class ID Opt Avg Share
Price
Shares ΔShares
(%)
Value
(x1000)
ΔValue
(%)
Prior Allocation
(%)
Allocation
(%)
ΔAllocation
(%)
Cost Basis
(x1000)
Profit
(x1000)
Return
(%)
2021-08-04 2021-06-30 13F MERCK & CO. COM Call 0 -100.00 0 -100.00 n/a n/a n/a
2021-05-04 2021-03-31 13F MERCK & CO. COM Call 1,800 139 n/a n/a n/a
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.