Exxon Mobil Corporation
MX ˙ BMV ˙ US30231G1022
SecurityMX:XOM / Exxon Mobil Corporation
InstitutionMayfair Advisory Group, LLC
Latest Disclosed Ownership21,819 shares
Latest Disclosed Value $ 3,701,880
Mayfair Advisory Group, LLC reports 0.78% decrease in ownership of XOM / Exxon Mobil Corporation

On April 21, 2026 - Mayfair Advisory Group, LLC filed a 13F-HR form disclosing ownership of 21,819 shares of Exxon Mobil Corporation (MX:XOM) valued at $3,701,880 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 21, 2026 disclosing 21,991 shares of Exxon Mobil Corporation. This represents a change in shares of -0.78% during the quarter.

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 .

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)
2026-04-21 2026-03-31 13F EXXON MOBIL COM 30231G102 21,819 -172 -0.78 3,702 37.23 1.2925
2026-01-21 2025-12-31 13F EXXON MOBIL COM 30231G102 21,991 -98 -0.44 2,697 8.31 1.0475
2025-10-21 2025-09-30 13F EXXON MOBIL COM 30231G102 22,089 0 0.00 2,491 5.55 1.0683
2025-08-13 2025-06-30 13F EXXON MOBIL COM 30231G102 22,089 -291 -1.30 2,359 -11.35 1.1120
2025-04-18 2025-03-31 13F EXXON MOBIL COM 30231G102 22,380 0 0.00 2,662 10.55 1.5352
2025-01-14 2024-12-31 13F EXXON MOBIL COM 30231G102 22,380 121 0.54 2,407 -13.35 1.4177
2024-10-23 2024-09-30 13F EXXON MOBIL COM 30231G102 22,259 150 0.68 2,779 10.94 1.7525
2024-07-22 2024-06-30 13F EXXON MOBIL COM 30231G102 22,109 429 1.98 2,504 -0.63 1.6959
2024-04-18 2024-03-31 13F EXXON MOBIL COM 30231G102 21,680 233 1.09 2,520 14.81 1.8291
2024-01-19 2023-12-31 13F EXXON MOBIL COM 30231G102 21,447 -940 -4.20 2,195 -11.21 1.8694
2023-10-24 2023-09-30 13F EXXON MOBIL COM 30231G102 22,387 1,364 6.49 2,473 14.02 2.3853
2023-07-24 2023-06-30 13F EXXON MOBIL COM 30231G102 21,023 3,666 21.12 2,169 7.65 2.1656
2023-04-20 2023-03-31 13F EXXON MOBIL COM 30231G102 17,357 -175 -1.00 2,014 5.94 2.1849
2023-01-27 2022-12-31 13F EXXON MOBIL COM 30231G102 17,532 -6 -0.03 1,902 17.93 2.4215
2022-11-08 2022-09-30 13F EXXON MOBIL COM 30231G102 17,538 202 1.17 1,612 -4.05 2.2777
2022-08-09 2022-06-30 13F EXXON MOBIL COM 30231G102 17,336 191 1.11 1,680 17.89 2.2126
2022-04-14 2022-03-31 13F EXXON MOBIL COM 30231G102 17,145 222 1.31 1,425 26.11 1.8266
2022-01-19 2021-12-31 13F EXXON MOBIL COM 30231G102 16,923 1,659 10.87 1,130 19.96 1.4976
2021-10-08 2021-09-30 13F EXXON MOBIL COM 30231G102 15,264 202 1.34 942 -0.84 1.4442
2021-07-29 2021-06-30 13F EXXON MOBIL COM 30231G102 15,062 1,132 8.13 950 18.90 1.5053
2021-04-19 2021-03-31 13F EXXON MOBIL COM 30231G102 13,930 3 0.02 799 39.20 1.4283
2021-01-28 2020-12-31 13F EXXON MOBIL COM 30231G102 13,927 7,751 125.50 574 170.75 1.1232
2020-10-26 2020-09-30 13F EXXON MOBIL COM 30231G102 6,176 6,176 212 0.5467
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.