Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionPerigon Wealth Management, LLC
Latest Disclosed Ownership80,209 shares
Latest Disclosed Value $ 9,648,284
Perigon Wealth Management, LLC ownership in MRK / Merck & Co., Inc.

On April 10, 2026 - Perigon Wealth Management, LLC filed a 13F-HR form disclosing ownership of 80,209 shares of Merck & Co., Inc. (MX:MRK) valued at $9,648,284 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 16, 2026 disclosing 79,128 shares of Merck & Co., Inc.. This represents a change in shares of 1.37% during the quarter.

Perigon Wealth Management, LLC has a history of taking positions in derivatives of the underlying security (MRK) in the form of stock options.

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)
2026-04-10 2026-03-31 13F MERCK COM 58933Y105 80,209 1,081 1.37 9,648 15.85 0.1750
2026-01-16 2025-12-31 13F MERCK COM 58933Y105 79,128 3,639 4.82 8,329 31.46 0.1490
2025-10-17 2025-09-30 13F MERCK COM 58933Y105 75,489 14,081 22.93 6,336 30.32 0.1292
2025-07-16 2025-06-30 13F MERCK COM 58933Y105 61,408 -6,663 -9.79 4,861 -20.44 0.1135
2025-04-23 2025-03-31 13F MERCK COM 58933Y105 68,071 -7,655 -10.11 6,110 -19.87 0.1569
2025-01-22 2024-12-31 13F MERCK COM 58933Y105 75,726 -4,971 -6.16 7,626 -16.79 0.1873
2024-10-16 2024-09-30 13F MERCK COM 58933Y105 80,697 -23,264 -22.38 9,164 -28.80 0.2419
2024-08-02 2024-06-30 13F MERCK COM 58933Y105 103,961 -57,935 -35.79 12,870 -39.75 0.3729
2024-04-29 2024-03-31 13F MERCK COM 58933Y105 161,896 1,906 1.19 21,362 22.47 0.6475
2024-01-29 2023-12-31 13F MERCK COM 58933Y105 159,990 44,738 38.82 17,442 47.00 0.5703
2023-10-30 2023-09-30 13F MERCK COM 58933Y105 115,252 1,478 1.30 11,865 -9.62 0.4808
2023-08-02 2023-06-30 13F/A-1 MERCK COM 58933Y105 113,774 55,228 94.33 13,128 110.79 0.5158
2023-08-02 2023-06-30 13F MERCK COM 58933Y105 113,774 55,228 13,128 0.5158
2023-05-03 2023-03-31 13F MERCK COM 58933Y105 58,546 -53,304 -47.66 6,229 -49.81 0.3541
2023-05-01 2022-12-31 13F/A-1 MERCK COM 58933Y105 111,850 17,555 18.62 12,410 52.80 0.7690
2023-02-14 2022-12-31 13F MERCK COM 58933Y105 111,850 17,555 12,410 0.7692
2022-12-13 2022-09-30 13F MERCK COM 58933Y105 94,295 1,282 1.38 8,121 -4.23 0.7019
2022-08-11 2022-06-30 13F MERCK COM 58933Y105 93,013 6,808 7.90 8,480 19.89 0.7086
2022-05-16 2022-03-31 13F MERCK COM 58933Y105 86,205 1,380 1.63 7,073 8.80 0.4997
2022-02-11 2021-12-31 13F MERCK COM 58933Y105 84,825 -1,766 -2.04 6,501 -0.05 0.4649
2021-11-01 2021-09-30 13F/A-1 MERCK COM 58933Y105 86,591 -2,415 -2.71 6,504 -6.04 0.5644
2021-07-19 2021-06-30 13F MERCK COM 58933Y105 89,006 -11,181 -11.16 6,922 -10.37 0.6156
2021-05-17 2021-03-31 13F MERCK & CO. COM 58933Y105 100,187 -10,408 -9.41 7,723 -14.63 0.7877
2021-01-28 2020-12-31 13F MERCK & CO. COM 58933Y105 110,595 3,402 3.17 9,047 1.74 1.0510
2020-11-03 2020-09-30 13F MERCK & CO. COM 58933Y105 107,193 -2,713 -2.47 8,892 4.62 1.2429
2020-07-29 2020-06-30 13F MERCK & CO. COM 58933Y105 109,906 15,317 16.19 8,499 8.92 1.3473
2020-04-17 2020-03-31 13F MERCK & CO. COM 58933Y105 94,589 -3,075 -3.15 7,803 -12.82 1.4523
2020-01-13 2019-12-31 13F MERCK COM 58933Y105 97,664 -14,087 -12.61 8,950 -5.82 1.8267
2019-10-25 2019-09-30 13F MERCK COM 58933Y105 111,751 1,754 1.59 9,503 3.04 2.2318
2019-08-05 2019-06-30 13F MERCK COM 58933Y105 109,997 -3,007 -2.66 9,223 6.88 2.1594
2019-05-15 2019-03-31 13F Merck & Co Inc COM 58933Y105 113,004 -14,817 -11.59 8,629 -6.16 2.0066
2019-02-11 2018-12-31 13F Merck & Co Inc COM 58933Y105 127,821 9,359 7.90 9,195 8.69 2.3474
2018-11-13 2018-09-30 13F Merck & Co Inc COM 58933Y105 118,462 1,104 0.94 8,460 17.83 2.0841
2018-08-09 2018-06-30 13F/A-2 Merck Co Inc COM 58933Y105 117,358 1,377 1.19 7,180 12.66 2.1587
2018-08-08 2018-06-30 13F/A-1 Merck & Co Inc COM 58933Y105 115,981 0 6,373 2.5688
2018-08-07 2018-06-30 13F Merck & Co Inc COM 58933Y105 115,981 0 6,373 2.5688
2018-05-14 2018-03-31 13F Merck & Co Inc COM 58933Y105 115,981 -200 -0.17 6,373 -3.37 2.3477
2018-02-14 2017-12-31 13F Merck & Co Inc COM 58933Y105 116,181 -2,765 -2.32 6,595 -14.04 2.4609
2017-12-05 2017-09-30 13F Merck & Co Inc COM 58933Y105 118,946 -1,566 -1.30 7,672 -1.39 2.4894
2017-09-12 2017-06-30 13F Merck & Co Inc COM 58933Y105 120,512 1,406 1.18 7,780 2.05 1.6925
2017-06-05 2017-03-31 13F Merck & Co Inc COM 58933Y105 119,106 -156 -0.13 7,624 -3.98 1.6179
2017-03-07 2016-12-31 13F Merck & Co Inc COM 58933Y105 119,262 399 0.34 7,940 6.42 1.7337
2016-11-16 2016-09-30 13F Merck & Co Inc COM 58933Y105 118,863 -270,094 -69.44 7,461 -66.95 1.9162
2016-08-19 2016-06-30 13F Merck & Co Inc COM 58933Y105 388,957 147,052 60.79 22,575 75.01 6.0001
2016-06-03 2016-03-31 13F Merck & Co Inc COM 58933Y105 241,905 0 0.00 12,899 -0.36 4.0285
2016-03-04 2015-12-31 13F Merck & Co Inc COM 58933Y105 241,905 216,314 845.27 12,946 924.21 3.5737
2015-12-02 2015-09-30 13F Merck & Co Inc COM 58933Y105 25,591 0 0.00 1,264 -13.25 0.3751
2015-08-31 2015-06-30 13F Merck & Co Inc COM 58933Y105 25,591 218 0.86 1,457 -0.07 0.3835
2015-05-11 2015-03-31 13F Merck & Co Inc COM 58933Y105 25,373 6,580 35.01 1,458 36.64 0.3998
2015-02-18 2014-12-31 13F Merck & Co Inc COM 58933Y105 18,793 0 0.00 1,067 -4.22 0.3206
2014-11-17 2014-09-30 13F Merck & Co Inc COM 58933Y105 18,793 -6,580 -25.93 1,114 -24.11 0.3317
2014-08-12 2014-06-30 13F Merck & Co Inc COM 58933Y105 25,373 0 0.00 1,468 1.94 0.4185
2014-05-12 2014-03-31 13F Merck & Co Inc COM 58933Y105 25,373 3,930 18.33 1,440 34.20 0.7929
2014-02-18 2013-12-31 13F Merck & Co Inc COM 58933Y105 21,443 -72,852 -77.26 1,073 -86.79 0.5951
2022-11-14 2011-09-30 13F MERCK COM 58933Y105 94,295 94,295 8,121 0.7019
Disclosed Put 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
(%)
2020-11-03 2020-09-30 13F MERCK & CO. COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2020-07-29 2020-06-30 13F MERCK & CO. COM Put 15,300 0.00 49 -20.97 n/a n/a n/a
2020-04-17 2020-03-31 13F MERCK & CO. COM Put 15,300 -75.08 62 181.82 n/a n/a n/a
2020-01-13 2019-12-31 13F MERCK COM Put 61,400 0.00 22 -45.00 n/a n/a n/a
2019-10-25 2019-09-30 13F MERCK COM Put 61,400 0.00 40 -60.40 n/a n/a n/a
2019-08-05 2019-06-30 13F MERCK COM Put 61,400 101 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.