Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionSevenBridge Financial Group, LLC
Latest Disclosed Ownership26,903 shares
Latest Disclosed Value $ 3,037,124
SevenBridge Financial Group, LLC ownership in MRK / Merck & Co., Inc.

On April 23, 2026 - SevenBridge Financial Group, LLC filed a 13F-HR form disclosing ownership of 26,903 shares of Merck & Co., Inc. (MX:MRK) valued at $3,037,124 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 2, 2026 disclosing 27,265 shares of Merck & Co., Inc.. This represents a change in shares of -1.33% during the quarter.

SevenBridge Financial Group, 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)
2026-04-23 2026-03-31 13F MERCK COM 58933Y105 26,903 -362 -1.33 3,037 3.72 0.4748
2026-02-02 2025-12-31 13F MERCK COM 58933Y105 27,265 -2,570 -8.61 2,928 7.33 0.4709
2025-11-13 2025-09-30 13F MERCK COM 58933Y105 29,835 -7,596 -20.29 2,728 -9.22 0.4498
2025-09-04 2025-06-30 13F MERCK COM 58933Y105 37,431 -7,453 -16.61 3,006 -16.76 0.5299
2025-05-13 2025-03-31 13F MERCK COM 58933Y105 44,884 -11,644 -20.60 3,610 -26.19 0.7103
2025-02-12 2024-12-31 13F MERCK COM 58933Y105 56,528 -3,931 -6.50 4,892 -19.69 0.9254
2024-11-12 2024-09-30 13F MERCK COM 58933Y105 60,459 4,042 7.16 6,090 -2.87 1.1731
2024-08-09 2024-06-30 13F MERCK COM 58933Y105 56,417 779 1.40 6,271 -11.62 1.3868
2024-05-10 2024-03-31 13F MERCK COM 58933Y105 55,638 -2,030 -3.52 7,094 12.85 1.6073
2024-01-22 2023-12-31 13F MERCK COM 58933Y105 57,668 1,217 2.16 6,287 8.17 1.4852
2023-10-25 2023-09-30 13F MERCK COM 58933Y105 56,451 491 0.88 5,812 -10.00 1.5019
2023-07-26 2023-06-30 13F MERCK COM 58933Y105 55,960 -507 -0.90 6,457 7.49 1.6673
2023-04-20 2023-03-31 13F MERCK COM 58933Y105 56,467 -13 -0.02 6,008 -4.13 1.6559
2023-01-26 2022-12-31 13F Merck COM 58933Y105 56,480 -1,226 -2.12 6,266 26.08 1.8323
2022-10-17 2022-09-30 13F MERCK COM 58933Y105 57,706 10,337 21.82 4,970 15.07 1.6840
2022-07-12 2022-06-30 13F Merck Equities 58933Y105 47,369 -724 -1.51 4,319 9.45 1.7463
2022-04-15 2022-03-31 13F Merck COM 58933Y105 48,093 -3,336 -6.49 3,946 0.10 1.3853
2022-01-20 2021-12-31 13F/A-1 Merck COM 58933Y105 51,429 400 0.78 3,942 2.84 1.1918
2021-10-14 2021-09-30 13F Merck Equities 58933Y105 51,029 -227 -0.44 3,833 -3.84 1.2777
2021-07-26 2021-06-30 13F Merck Equities 58933Y105 51,256 1,809 3.66 3,986 4.56 1.2995
2021-04-20 2021-03-31 13F Merck Equities 58933Y105 49,447 1,985 4.18 3,812 -1.80 1.3870
2021-01-19 2020-12-31 13F Merck Equities 58933Y105 47,462 4,784 11.21 3,882 9.66 1.5175
2020-10-22 2020-09-30 13F Merck Equities 58933Y105 42,678 966 2.32 3,540 9.73 1.6112
2020-07-24 2020-06-30 13F Merck Equities 58933Y105 41,712 782 1.91 3,226 2.45 1.6022
2020-04-16 2020-03-31 13F Merck Equities 58933Y105 40,930 2,808 7.37 3,149 -9.17 1.8226
2020-01-17 2019-12-31 13F Merck Equities 58933Y105 38,122 -238 -0.62 3,467 7.37 0.9058
2019-10-09 2019-09-30 13F Merck Equities 58933Y105 38,360 692 1.84 3,229 2.25 1.6980
2019-07-15 2019-06-30 13F Merck Equities 58933Y105 37,668 -325 -0.86 3,158 -0.06 1.1312
2019-05-14 2019-03-31 13F Merck Equities 58933Y105 37,993 -38 -0.10 3,160 8.74 1.1859
2019-02-14 2018-12-31 13F Merck Equities 58933Y105 38,031 -1,906 -4.77 2,906 2.58 1.7783
2018-11-14 2018-09-30 13F Merck Equities 58933Y105 39,937 456 1.15 2,833 18.24 1.5058
2018-08-14 2018-06-30 13F Merck Equities 58933Y105 39,481 1,041 2.71 2,396 14.42 1.3346
2018-05-11 2018-03-31 13F Merck Equities 58933Y105 38,440 430 1.13 2,094 -2.10 1.2015
2018-02-16 2017-12-31 13F Merck Equities 58933Y105 38,010 1,157 3.14 2,139 -9.36 1.1830
2017-11-13 2017-09-30 13F Merck Equities 58933Y105 36,853 1,241 3.48 2,360 2.65 1.3522
2017-08-14 2017-06-30 13F Merck Common Stock 58933Y105 35,612 1,343 3.92 2,299 6.29 1.4035
2017-05-15 2017-03-31 13F Merck CS 58933Y105 34,269 19,443 131.14 2,163 133.33 1.4209
2017-02-03 2016-12-31 13F Merck CS 58933Y105 14,826 0 0.00 927 0.00 0.6732
2016-12-20 2016-09-30 13F/A-1 Merck CS 58933Y105 14,826 -580 -3.76 927 4.39 0.6753
2016-11-28 2016-09-30 13F Merck CS 58933Y105 14,826 927
2016-08-15 2016-06-30 13F Merck CS 58933Y105 15,406 15,406 888 0.6222
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
(%)
2020-04-16 2020-03-31 13F Merck & Co Inc Call Opt 01 Options Call 0 -100.00 0 -100.00 n/a n/a n/a
2020-01-17 2019-12-31 13F Merck & Co Inc Call Opt 01 Options Call 1 2,098 n/a n/a n/a
2019-10-09 2019-09-30 13F Merck & Co Inc Call Opt 01 Options Call 0 -100.00 0 -100.00 n/a n/a n/a
2019-07-15 2019-06-30 13F Merck & Co Inc Call Opt 01 Options Call 11 0.00 16,638 1.34 n/a n/a n/a
2019-05-14 2019-03-31 13F Merck & Co Inc Call Opt 01 Options Call 11 0.00 16,418 149,154.55 n/a n/a n/a
2019-02-14 2018-12-31 13F Merck & Co Inc Call Opt 01 Options Call 11 -45.00 11 57.14 n/a n/a n/a
2018-11-14 2018-09-30 13F Call Merck & Co Inc 01 Options Call 20 0.00 7 600.00 n/a n/a n/a
2018-08-14 2018-06-30 13F Call Merck & Co Inc 01 Options Call 20 0.00 1 0.00 n/a n/a n/a
2018-05-11 2018-03-31 13F Call Merck & Co Inc 01 Options Call 20 0.00 1 n/a n/a n/a
2018-02-16 2017-12-31 13F Merck & Co Inc Call Opt 01 Options Call 20 0.00 0 -100.00 n/a n/a n/a
2017-11-13 2017-09-30 13F Merck & Co Inc Call Opt 01 Options Call 20 0.00 2 -50.00 n/a n/a n/a
2017-08-14 2017-06-30 13F Merck & Co Inc Call Opt 01 Calls Call 20 0.00 4 0.00 n/a n/a n/a
2017-05-15 2017-03-31 13F Merck & Co Inc Call Opt 01 CL Call 20 4 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.