Merck & Co., Inc.
MX ˙ BMV ˙ US58933Y1055
SecurityMX:MRK / Merck & Co., Inc.
InstitutionBanque Pictet & Cie Sa
Latest Disclosed Ownership513,131 shares
Latest Disclosed Value $ 61,724,528
Banque Pictet & Cie Sa ownership in MRK / Merck & Co., Inc.

On April 14, 2026 - Banque Pictet & Cie Sa filed a 13F-HR form disclosing ownership of 513,131 shares of Merck & Co., Inc. (MX:MRK) valued at $61,724,528 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 16, 2026 disclosing 557,062 shares of Merck & Co., Inc.. This represents a change in shares of -7.89% during the quarter.

Banque Pictet & Cie Sa 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)
2026-04-14 2026-03-31 13F MERCK COM 58933Y105 513,131 -43,931 -7.89 61,725 5.27 0.3632
2026-01-16 2025-12-31 13F MERCK COM 58933Y105 557,062 -231,291 -29.34 58,636 -11.38 0.3438
2025-10-21 2025-09-30 13F MERCK COM 58933Y105 788,353 -246,821 -23.84 66,166 -19.25 0.3845
2025-07-16 2025-06-30 13F MERCK COM 58933Y105 1,035,174 -79,397 -7.12 81,944 -18.09 0.5704
2025-04-30 2025-03-31 13F MERCK COM 58933Y105 1,114,571 -87,339 -7.27 100,044 -16.33 0.8069
2025-01-30 2024-12-31 13F MERCK COM 58933Y105 1,201,910 -31,915 -2.59 119,566 -14.66 0.7982
2024-10-21 2024-09-30 13F MERCK COM 58933Y105 1,233,825 119,775 10.75 140,113 1.59 1.0629
2024-07-25 2024-06-30 13F MERCK COM 58933Y105 1,114,050 -6,394 -0.57 137,919 -6.71 1.2492
2024-05-06 2024-03-31 13F MERCK COM 58933Y105 1,120,444 384,379 52.22 147,843 84.24 1.3885
2024-02-09 2023-12-31 13F MERCK COM 58933Y105 736,065 -131,858 -15.19 80,246 -10.19 0.6641
2023-11-27 2023-09-30 13F/A-1 MERCK COM 58933Y105 867,923 23,647 2.80 89,353 -8.28 1.0545
2023-11-02 2023-09-30 13F MERCK COM 58933Y105 875,298 31,022 90,112 0.9821
2023-08-04 2023-06-30 13F MERCK COM 58933Y105 844,276 79,442 10.39 97,421 19.73 0.8545
2023-05-01 2023-03-31 13F MERCK COM 58933Y105 764,834 -57,564 -7.00 81,371 -10.82 0.7891
2023-02-06 2022-12-31 13F MERCK COM 58933Y105 822,398 -193 -0.02 91,245 28.80 0.9515
2022-11-10 2022-09-30 13F MERCK COM 58933Y105 822,591 24,407 3.06 70,842 -2.65 0.7716
2022-08-08 2022-06-30 13F MERCK COM 58933Y105 798,184 70,260 9.65 72,770 21.84 0.7199
2022-05-04 2022-03-31 13F MERCK COM 58933Y105 727,924 4,006 0.55 59,726 7.65 0.4612
2022-02-02 2021-12-31 13F/A-1 MERCK COM 58933Y105 723,918 104,110 16.80 55,481 19.18 0.4107
2022-02-02 2021-12-31 13F MERCK COM 58933Y105 723,918 104,110 55,481 0.3614
2021-11-12 2021-09-30 13F/A-1 MERCK COM 58933Y105 619,808 9,541 1.56 46,554 -1.91 0.4848
2021-11-10 2021-09-30 13F MERCK COM 58933Y105 619,808 9,541 46,554 0.4857
2021-08-12 2021-06-30 13F MERCK COM 58933Y105 610,267 17,247 2.91 47,460 3.81 0.5294
2021-05-11 2021-03-31 13F MERCK & CO. COM 58933Y105 593,020 9,710 1.66 45,716 -4.19 0.5858
2021-02-10 2020-12-31 13F MERCK & CO. COM 58933Y105 583,310 45,108 8.38 47,715 6.88 0.6486
2020-11-10 2020-09-30 13F MERCK & CO. COM 58933Y105 538,202 43,259 8.74 44,644 16.64 0.6744
2020-08-13 2020-06-30 13F MERCK & CO. COM 58933Y105 494,943 25,097 5.34 38,274 5.88 0.6407
2020-04-30 2020-03-31 13F MERCK & CO. COM 58933Y105 469,846 30,064 6.84 36,150 -9.62 0.7440
2020-02-03 2019-12-31 13F MERCK COM 58933Y105 439,782 329,157 297.54 39,998 329.53 0.6939
2019-11-08 2019-09-30 13F MERCK COM 58933Y105 110,625 -5,300 -4.57 9,312 -4.20 0.1768
2019-08-07 2019-06-30 13F MERCK COM 58933Y105 115,925 -5,071 -4.19 9,720 -3.41 0.1789
2019-05-02 2019-03-31 13F MERCK COM 58933Y105 120,996 -48,647 -28.68 10,063 -22.37 0.1931
2019-01-31 2018-12-31 13F MERCK COM 58933Y105 169,643 -24,590 -12.66 12,962 -5.93 0.2647
2018-11-07 2018-09-30 13F MERCK COM 58933Y105 194,233 -48,035 -19.83 13,779 -6.30 0.2550
2018-08-09 2018-06-30 13F MERCK COM 58933Y105 242,268 2,110 0.88 14,706 12.42 0.2892
2018-05-09 2018-03-31 13F MERCK COM 58933Y105 240,158 -50,566 -17.39 13,081 -20.04 0.2754
2018-02-09 2017-12-31 13F MERCK COM 58933Y105 290,724 -154,170 -34.65 16,359 -42.57 0.3267
2017-11-07 2017-09-30 13F MERCK COM 58933Y105 444,894 -9,950 -2.19 28,487 -2.28 0.6451
2017-08-09 2017-06-30 13F MERCK COM 58933Y105 454,844 -91,552 -16.76 29,151 -16.03 0.6934
2017-05-12 2017-03-31 13F MERCK COM 58933Y105 546,396 107,800 24.58 34,718 34.46 0.8585
2017-02-06 2016-12-31 13F MERCK COM 58933Y105 438,596 -61,480 -12.29 25,820 -17.27 0.6646
2016-11-07 2016-09-30 13F MERCK COM 58933Y105 500,076 -192,167 -27.76 31,210 -21.74 0.8047
2016-08-10 2016-06-30 13F MERCK COM 58933Y105 692,243 31,126 4.71 39,880 14.01 1.0661
2016-05-06 2016-03-31 13F MERCK & CO INC COM 58933Y105 661,117 -24,610 -3.59 34,980 -3.42 0.9124
2016-02-03 2015-12-31 13F MERCK & CO INC COM 58933Y105 685,727 186,241 37.29 36,220 46.82 0.9759
2015-11-10 2015-09-30 13F/A-1 MERCK & CO INC COM 58933Y105 499,486 499,486 0.00 24,670 0.7361
2015-11-10 2015-09-30 13F MERCK & CO INC COM 58933Y105 499,486 24,670
2015-08-07 2015-06-30 13F MERCK & CO INC COM 58933Y105 0 -871,367 -100.00 0 -100.00
2015-05-08 2015-03-31 13F MERCK & CO INC COM 58933Y105 871,367 104,102 13.57 50,086 14.95 1.3063
2015-02-12 2014-12-31 13F MERCK & CO INC COM 58933Y105 767,265 25,047 3.37 43,573 -0.97 1.1463
2014-11-07 2014-09-30 13F MERCK & CO INC COM 58933Y105 742,218 -76,713 -9.37 43,999 -7.13 1.1338
2014-08-06 2014-06-30 13F MERCK & CO INC COM 58933Y105 818,931 77,947 10.52 47,375 12.62 1.1847
2014-05-09 2014-03-31 13F MERCK & CO INC COM 58933Y105 740,984 -2,561 -0.34 42,066 13.04 1.1501
2014-02-12 2013-12-31 13F MERCK & CO INC COM 58933Y105 743,545 743,545 37,214 1.0970
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
(%)
2016-11-07 2016-09-30 13F MERCK COM Put 0 -100.00 0 -100.00 n/a n/a n/a
2016-08-10 2016-06-30 13F MERCK COM Put 14,500 835 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.