Merck & Co., Inc.
DE ˙ XTRA ˙ US58933Y1055
102,78 € ↑2,84 (2,84%)
2026-06-04
DELAT PRIS
SecurityDE:6MK / Merck & Co., Inc.
InstitutionPasadena Private Wealth, LLC
Latest Disclosed Ownership2,615 shares
Latest Disclosed Value $ 314,558
Pasadena Private Wealth, LLC ownership in 6MK / Merck & Co., Inc.

On April 22, 2026 - Pasadena Private Wealth, LLC filed a 13F-HR form disclosing ownership of 2,615 shares of Merck & Co., Inc. (DE:6MK) valued at $272,483 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 10, 2026 disclosing 2,595 shares of Merck & Co., Inc.. This represents a change in shares of 0.77% during the quarter. The current value of the position is $268,770 USD.

Pasadena Private Wealth, LLC has a history of taking positions in derivatives of the underlying security (6MK) in the form of stock options. The firm currently holds call options representing 2,500 of underlying shares valued at $59,459 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.

Upgrade to unlock premium data and export to Excel .

Institutional Put/Call Ratios
(Premium Subscription Required)

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.

DE:6MK / 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)
2026-04-22 2026-03-31 13F MERCK COM 58933Y105 2,615 20 0.77 315 15.02 0.0434
2026-02-10 2025-12-31 13F MERCK COM 58933Y105 2,595 110 4.43 273 31.25 0.0371
2025-10-24 2025-09-30 13F MERCK COM 58933Y105 2,485 -100 -3.87 209 1.96 0.0300
2025-08-01 2025-06-30 13F MERCK COM 58933Y105 2,585 -750 -22.49 205 -31.77 0.0350
2025-05-08 2025-03-31 13F MERCK COM 58933Y105 3,335 -175 -4.99 299 -14.33 0.0577
2025-02-03 2024-12-31 13F MERCK COM 58933Y105 3,510 200 6.04 349 -6.93 0.0716
2024-11-08 2024-09-30 13F MERCK COM 58933Y105 3,310 0 0.00 376 -8.31 0.0800
2024-07-19 2024-06-30 13F MERCK COM 58933Y105 3,310 0 0.00 410 -6.19 0.0947
2024-04-16 2024-03-31 13F MERCK COM 58933Y105 3,310 0 0.00 437 21.11 0.1005
2024-01-10 2023-12-31 13F MERCK COM 58933Y105 3,310 25 0.76 361 6.51 0.0881
2023-10-11 2023-09-30 13F MERCK COM 58933Y105 3,285 0 0.00 338 -10.82 0.1013
2023-07-12 2023-06-30 13F MERCK COM 58933Y105 3,285 -1 -0.03 379 8.60 0.1068
2023-04-20 2023-03-31 13F MERCK COM 58933Y105 3,286 1 0.03 350 -4.12 0.1011
2023-02-02 2022-12-31 13F MERCK COM 58933Y105 3,285 -262 -7.39 365 19.34 0.1125
2022-11-18 2022-09-30 13F MERCK COM 58933Y105 3,547 251 7.62 305 1.33 0.1073
2022-08-08 2022-06-30 13F MERCK COM 58933Y105 3,296 1 0.03 301 11.48 0.1030
2022-04-21 2022-03-31 13F MERCK COM 58933Y105 3,295 -449 -11.99 270 -5.92 0.0879
2022-02-14 2021-12-31 13F MERCK COM 58933Y105 3,744 670 21.80 287 24.24 0.0939
2021-11-09 2021-09-30 13F MERCK COM 58933Y105 3,074 0 0.00 231 -3.35 0.0809
2021-08-09 2021-06-30 13F MERCK COM 58933Y105 3,074 0 0.00 239 0.84 0.0818
2021-04-30 2021-03-31 13F MERCK & CO. COM 58933Y105 3,074 0 0.00 237 -5.58 0.0858
2021-02-10 2020-12-31 13F MERCK & CO. COM 58933Y105 3,074 0 0.00 251 -1.57 0.0949
2020-11-09 2020-09-30 13F MERCK & CO. COM 58933Y105 3,074 0 0.00 255 7.14 0.0990
2020-08-05 2020-06-30 13F MERCK & CO. COM 58933Y105 3,074 0 0.00 238 -5.18 0.0903
2020-05-04 2020-03-31 13F MERCK & CO. COM 58933Y105 3,074 450 17.15 251 5.02 0.1034
2020-01-15 2019-12-31 13F MERCK COM 58933Y105 2,624 0 0.00 239 8.14 0.1048
2019-10-16 2019-09-30 13F MERCK COM 58933Y105 2,624 0 0.00 221 0.45 0.1020
2019-08-06 2019-06-30 13F MERCK COM 58933Y105 2,624 -161 -5.78 220 -5.17 0.1041
2019-05-10 2019-03-31 13F MERCK COM 58933Y105 2,785 2,785 232 0.2511
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
(%)
2026-04-22 2026-03-31 13F MERCK COM Call 2,500 0.00 59 31.11 n/a n/a n/a
2026-02-10 2025-12-31 13F MERCK COM Call 2,500 45 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.