Organon & Co.
US ˙ NYSE

SecurityOGN / Organon & Co.
InstitutionMercer Global Advisors Inc /adv
Latest Disclosed Ownership51,981 shares
Latest Disclosed Value $ 311,367
Mercer Global Advisors Inc /adv reports 2.98% decrease in ownership of OGN / Organon & Co.

On May 15, 2026 - Mercer Global Advisors Inc /adv filed a 13F-HR form disclosing ownership of 51,981 shares of Organon & Co. (US:OGN) valued at $311,366 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 53,577 shares of Organon & Co.. This represents a change in shares of -2.98% during the quarter. The current value of the position is $694,466 USD.

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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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)
2026-05-15 2026-03-31 13F ORGANON COMMON STOCK 68622V106 51,981 -1,596 -2.98 311 -19.01 0.0005
2026-02-17 2025-12-31 13F ORGANON COMMON STOCK 68622V106 53,577 4,308 8.74 384 -27.00 0.0006
2025-11-14 2025-09-30 13F ORGANON COMMON STOCK 68622V106 49,269 14,337 41.04 526 55.62 0.0009
2025-08-14 2025-06-30 13F ORGANON COMMON STOCK 68622V106 34,932 2,965 9.28 338 -28.84 0.0007
2025-05-15 2025-03-31 13F ORGANON COMMON STOCK 68622V106 31,967 705 2.26 476 1.93 0.0011
2025-02-14 2024-12-31 13F ORGANON COMMON STOCK 68622V106 31,262 -97 -0.31 466 -21.02 0.0011
2024-11-14 2024-09-30 13F ORGANON COMMON STOCK 68622V106 31,359 273 0.88 591 -12.46 0.0014
2024-08-12 2024-06-30 13F ORGANON COMMON STOCK 68622V106 31,086 546 1.79 674 0.0018
2024-05-15 2024-03-31 13F ORGANON COMMON STOCK 68622V106 30,540 3,923 14.74 1 0.0016
2024-02-15 2023-12-31 13F ORGANON COMMON STOCK 68622V106 26,617 11,329 74.10 0 0.0012
2023-11-15 2023-09-30 13F/A-1 ORGANON & COMMON STOCK 68622V106 15,288 2,236 17.13 0 0.0010
2023-11-14 2023-09-30 13F ORGANON & COMMON STOCK 68622V106 15,288 2,236 0 0.0010
2023-08-14 2023-06-30 13F ORGANON COMMON STOCK 68622V106 13,052 -60 -0.46 0 0.0011
2023-05-16 2023-03-31 13F ORGANON COMMON STOCK 68622V106 13,112 1,093 9.09 0 0.0014
2023-02-09 2022-12-31 13F ORGANON COMMON STOCK 68622V106 12,019 1,644 15.85 0 -100.00 0.0017
2022-11-15 2022-09-30 13F ORGANON COMMON STOCK 68622V106 10,375 2,267 27.96 243 -10.99 0.0014
2022-08-10 2022-06-30 13F ORGANON COMMON STOCK 68622V106 8,108 -891 -9.90 273 -13.06 0.0017
2022-05-10 2022-03-31 13F ORGANON COMMON STOCK 68622V106 8,999 372 4.31 314 19.39 0.0018
2022-02-04 2021-12-31 13F ORGANON COMMON STOCK 68622V106 8,627 -748 -7.98 263 -14.33 0.0016
2021-11-10 2021-09-30 13F ORGANON COMMON STOCK 68622V106 9,375 1,411 17.72 307 27.39 0.0021
2021-08-10 2021-06-30 13F ORGANON COMMON STOCK 68622V106 7,964 7,964 241 0.0019
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.