American Express Company
MX ˙ BMV ˙ US0258161092
SecurityMX:AXP / American Express Company
InstitutionParthenon Llc
Latest Disclosed Ownership66,125 shares
Latest Disclosed Value $ 20,001,490
Parthenon Llc reports 1.91% decrease in ownership of AXP / American Express Company

On April 28, 2026 - Parthenon Llc filed a 13F-HR form disclosing ownership of 66,125 shares of American Express Company (MX:AXP) valued at $20,001,490 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 67,410 shares of American Express Company. This represents a change in shares of -1.91% 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.

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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)
2026-04-28 2026-03-31 13F AMERICAN EXPRESS COM 025816109 66,125 -1,285 -1.91 20,001 -19.80 2.2866
2026-01-23 2025-12-31 13F AMERICAN EXPRESS COM 025816109 67,410 -1,078 -1.57 24,938 9.63 2.6911
2025-10-31 2025-09-30 13F AMERICAN EXPRESS COM 025816109 68,488 -1,097 -1.58 22,749 2.49 2.5206
2025-07-29 2025-06-30 13F AMERICAN EXPRESS COM 025816109 69,585 65 0.09 22,196 18.67 2.5392
2025-05-02 2025-03-31 13F AMERICAN EXPRESS COM 025816109 69,520 -112 -0.16 18,704 -9.49 2.3002
2025-02-03 2024-12-31 13F AMERICAN EXPRESS COM 025816109 69,632 792 1.15 20,666 10.70 2.4997
2024-11-05 2024-09-30 13F AMERICAN EXPRESS COM 025816109 68,840 100 0.15 18,669 17.30 2.2295
2024-08-08 2024-06-30 13F AMERICAN EXPRESS COM 025816109 68,740 -814 -1.17 15,917 0.51 2.0218
2024-04-30 2024-03-31 13F AMERICAN EXPRESS COM 025816109 69,554 -120 -0.17 15,837 21.33 2.0077
2024-02-05 2023-12-31 13F AMERICAN EXPRESS COM 025816109 69,674 -125 -0.18 13,053 25.34 1.8045
2023-10-30 2023-09-30 13F AMERICAN EXPRESS COM 025816109 69,799 170 0.24 10,413 -14.15 1.5624
2023-07-27 2023-06-30 13F AMERICAN EXPRESS COM 025816109 69,629 225 0.32 12,129 5.95 1.7522
2023-05-08 2023-03-31 13F AMERICAN EXPRESS COM 025816109 69,404 2,225 3.31 11,448 15.35 1.7521
2023-02-08 2022-12-31 13F AMERICAN EXPRESS COM 025816109 67,179 -460 -0.68 9,926 8.77 1.6282
2022-11-01 2022-09-30 13F AMERICAN EXPRESS COM 025816109 67,639 2,745 4.23 9,125 1.43 1.6468
2022-07-29 2022-06-30 13F AMERICAN EXPRESS COM 025816109 64,894 1,825 2.89 8,996 -23.72 1.5255
2022-05-09 2022-03-31 13F AMERICAN EXPRESS COM 025816109 63,069 1,110 1.79 11,794 16.36 1.7096
2022-02-07 2021-12-31 13F AMERICAN EXPRESS COM 025816109 61,959 -1,676 -2.63 10,136 -4.92 1.4217
2021-10-28 2021-09-30 13F AMERICAN EXPRESS COM 025816109 63,635 -487 -0.76 10,661 0.62 1.6020
2021-07-28 2021-06-30 13F AMERICAN EXPRESS COM 025816109 64,122 692 1.09 10,595 18.09 1.5873
2021-04-23 2021-03-31 13F AMERICAN EXPRESS COM 025816109 63,430 254 0.40 8,972 17.45 1.4428
2021-02-03 2020-12-31 13F AMERICAN EXPRESS COM 025816109 63,176 1,686 2.74 7,639 23.93 1.3174
2020-10-29 2020-09-30 13F AMERICAN EXPRESS COM 025816109 61,490 150 0.24 6,164 5.55 1.1957
2020-07-24 2020-06-30 13F AMERICAN EXPRESS COM 025816109 61,340 2,050 3.46 5,840 15.05 1.2125
2020-04-28 2020-03-31 13F AMERICAN EXPRESS COM 025816109 59,290 1,992 3.48 5,076 -28.84 1.2079
2020-01-28 2019-12-31 13F AMERICAN EXPRESS COM 025816109 57,298 2,595 4.74 7,133 10.25 1.4239
2019-10-31 2019-09-30 13F AMERICAN EXPRESS COM 025816109 54,703 235 0.43 6,470 -3.78 1.3838
2019-07-29 2019-06-30 13F AMERICAN EXPRESS COM 025816109 54,468 35 0.06 6,724 13.01 1.4420
2019-05-03 2019-03-31 13F AMERICAN EXPRESS COM 025816109 54,433 325 0.60 5,950 15.35 1.3301
2019-01-29 2018-12-31 13F AMERICAN EXPRESS COM 025816109 54,108 600 1.12 5,158 -9.48 1.2700
2018-11-14 2018-09-30 13F AMERICAN EXPRESS COM 025816109 53,508 50 0.09 5,698 8.76 1.2521
2018-08-02 2018-06-30 13F AMERICAN EXPRESS COM 025816109 53,458 375 0.71 5,239 5.80 1.2082
2018-05-03 2018-03-31 13F AMERICAN EXPRESS COM 025816109 53,083 1,450 2.81 4,952 -3.43 1.1665
2018-02-05 2017-12-31 13F AMERICAN EXPRESS COM 025816109 51,633 -367 -0.71 5,128 9.01 1.1556
2017-10-31 2017-09-30 13F AMERICAN EXPRESS COM 025816109 52,000 2,295 4.62 4,704 12.35 1.1104
2017-07-21 2017-06-30 13F AMERICAN EXPRESS COM 025816109 49,705 4,670 10.37 4,187 17.51 0.9959
2017-05-05 2017-03-31 13F AMERICAN EXPRESS COM 025816109 45,035 2,650 6.25 3,563 13.47 0.8455
2017-02-01 2016-12-31 13F AMERICAN EXPRESS COM 025816109 42,385 -850 -1.97 3,140 13.40 0.7714
2016-11-07 2016-09-30 13F AMERICAN EXPRESS COM 025816109 43,235 375 0.87 2,769 6.34 0.6873
2016-07-26 2016-06-30 13F AMERICAN EXPRESS COM 025816109 42,860 -105 -0.24 2,604 -1.29 0.6534
2016-05-16 2016-03-31 13F AMERICAN EXPRESS COM 025816109 42,965 -150 -0.35 2,638 -12.04 0.6775
2016-02-03 2015-12-31 13F AMERICAN EXPRESS COM 025816109 43,115 -2,255 -4.97 2,999 -10.82 0.7840
2015-10-29 2015-09-30 13F AMERICAN EXPRESS COM 025816109 45,370 2,100 4.85 3,363 0.00 0.9384
2015-07-24 2015-06-30 13F AMERICAN EXPRESS COM 025816109 43,270 43,270 3,363 0.8876
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.