American Express Company
MX ˙ BMV ˙ US0258161092
SecurityMX:AXP / American Express Company
InstitutionCastleark Management Llc
Latest Disclosed Ownership2,675 shares
Latest Disclosed Value $ 809,134
Castleark Management Llc ownership in AXP / American Express Company

On May 15, 2026 - Castleark Management Llc filed a 13F-HR form disclosing ownership of 2,675 shares of American Express Company (MX:AXP) valued at $809,134 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 2,675 shares of American Express Company. This represents a change in shares of 0.00% 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)
2026-05-15 2026-03-31 13F AMERICAN EXPRESS COM 025816109 2,675 0 0.00 809 -18.20 0.0268
2026-02-12 2025-12-31 13F AMERICAN EXPRESS COM 025816109 2,675 0 0.00 990 11.37 0.0291
2025-11-17 2025-09-30 13F AMERICAN EXPRESS COM 025816109 2,675 0 0.00 889 4.10 0.0249
2025-08-18 2025-06-30 13F AMERICAN EXPRESS COM 025816109 2,675 0 0.00 853 18.64 0.0256
2025-05-15 2025-03-31 13F AMERICAN EXPRESS COM 025816109 2,675 0 0.00 720 -9.33 0.0249
2025-02-18 2024-12-31 13F AMERICAN EXPRESS COM 025816109 2,675 -27,230 -91.06 794 -90.22 0.0277
2024-11-15 2024-09-30 13F AMERICAN EXPRESS COM 025816109 29,905 -38,070 -56.01 8,110 -48.47 0.3306
2024-08-14 2024-06-30 13F AMERICAN EXPRESS COM 025816109 67,975 0 0.00 15,740 1.69 0.6429
2024-05-16 2024-03-31 13F AMERICAN EXPRESS COM 025816109 67,975 65,300 2,441.12 15,477 2,989.22 0.6439
2024-02-15 2023-12-31 13F AMERICAN EXPRESS COM 025816109 2,675 0 0.00 501 25.56 0.0222
2023-11-15 2023-09-30 13F AMERICAN EXPRESS COM 025816109 2,675 0 0.00 399 -14.19 0.0203
2023-08-16 2023-06-30 13F AMERICAN EXPRESS COM 025816109 2,675 0 0.00 466 5.44 0.0211
2023-05-16 2023-03-31 13F AMERICAN EXPRESS COM 025816109 2,675 0 0.00 441 11.65 0.0217
2023-02-10 2022-12-31 13F AMERICAN EXPRESS COM 025816109 2,675 -20,300 -88.36 395 -87.26 0.0206
2022-11-15 2022-09-30 13F AMERICAN EXPRESS COM 025816109 22,975 0 0.00 3,100 -2.67 0.1725
2022-08-16 2022-06-30 13F AMERICAN EXPRESS COM 025816109 22,975 0 0.00 3,185 -25.86 0.1704
2022-05-16 2022-03-31 13F AMERICAN EXPRESS COM 025816109 22,975 0 0.00 4,296 14.29 0.1854
2022-02-16 2021-12-31 13F AMERICAN EXPRESS COM 025816109 22,975 0 0.00 3,759 -2.34 0.1382
2021-11-12 2021-09-30 13F AMERICAN EXPRESS COM 025816109 22,975 0 0.00 3,849 1.40 0.1472
2021-08-17 2021-06-30 13F AMERICAN EXPRESS COM 025816109 22,975 20,300 758.88 3,796 904.23 0.1275
2021-05-14 2021-03-31 13F AMERICAN EXPRESS COM 025816109 2,675 0 0.00 378 17.03 0.0136
2021-02-17 2020-12-31 13F AMERICAN EXPRESS COM 025816109 2,675 0 0.00 323 20.52 0.0121
2020-11-16 2020-09-30 13F AMERICAN EXPRESS COM 025816109 2,675 0 0.00 268 5.10 0.0105
2020-08-14 2020-06-30 13F AMERICAN EXPRESS COM 025816109 2,675 0 0.00 255 11.35 0.0111
2020-05-13 2020-03-31 13F AMERICAN EXPRESS COM 025816109 2,675 0 0.00 229 -31.23 0.0136
2020-02-14 2019-12-31 13F AMERICAN EXPRESS COM 025816109 2,675 0 0.00 333 5.38 0.0133
2019-11-15 2019-09-30 13F AMERICAN EXPRESS COM 025816109 2,675 0 0.00 316 -4.24 0.0129
2019-08-13 2019-06-30 13F AMERICAN EXPRESS COM 025816109 2,675 0 0.00 330 13.01 0.0127
2019-05-14 2019-03-31 13F AMERICAN EXPRESS COM 025816109 2,675 0 0.00 292 14.51 0.0110
2019-02-12 2018-12-31 13F AMERICAN EXPRESS COM 025816109 2,675 0 0.00 255 -10.53 0.0109
2018-11-14 2018-09-30 13F AMERICAN EXPRESS COM 025816109 2,675 0 0.00 285 8.78 0.0082
2018-08-15 2018-06-30 13F AMERICAN EXPRESS COM 025816109 2,675 0 0.00 262 4.80 0.0081
2018-05-14 2018-03-31 13F AMERICAN EXPRESS COM 025816109 2,675 0 0.00 250 -6.02 0.0079
2018-02-15 2017-12-31 13F AMERICAN EXPRESS COM 025816109 2,675 0 0.00 266 9.92 0.0080
2017-11-15 2017-09-30 13F AMERICAN EXPRESS COM 025816109 2,675 0 0.00 242 7.56 0.0076
2017-08-15 2017-06-30 13F AMERICAN EXPRESS COM 025816109 2,675 0 0.00 225 6.13 0.0074
2017-05-15 2017-03-31 13F AMERICAN EXPRESS COM 025816109 2,675 -2,500 -48.31 212 -44.65 0.0066
2017-02-15 2016-12-31 13F AMERICAN EXPRESS COM 025816109 5,175 0 0.00 383 15.71 0.0122
2016-11-15 2016-09-30 13F AMERICAN EXPRESS COM 025816109 5,175 0 0.00 331 5.41 0.0100
2016-08-10 2016-06-30 13F AMERICAN EXPRESS COM 025816109 5,175 0 0.00 314 -1.26 0.0100
2016-05-17 2016-03-31 13F AMERICAN EXPRESS COM 025816109 5,175 0 0.00 318 -11.67 0.0099
2016-02-17 2015-12-31 13F AMERICAN EXPRESS COM 025816109 5,175 0 0.00 360 -6.25 0.0108
2015-11-17 2015-09-30 13F AMERICAN EXPRESS COM 025816109 5,175 0 0.00 384 -4.48 0.0124
2015-08-17 2015-06-30 13F AMERICAN EXPRESS COM 025816109 5,175 -3,795 -42.31 402 -42.65 0.0107
2015-05-15 2015-03-31 13F AMERICAN EXPRESS COM 025816109 8,970 0 0.00 701 -16.05 0.0169
2015-02-10 2014-12-31 13F AMERICAN EXPRESS COM 025816109 8,970 0 0.00 835 3.34 0.0215
2014-11-17 2014-09-30 13F AMERICAN EXPRESS COM 025816109 8,970 0 0.00 808 -5.05 0.0230
2014-08-15 2014-06-30 13F AMERICAN EXPRESS COM 025816109 8,970 0 0.00 851 5.32 0.0235
2014-05-20 2014-03-31 13F AMERICAN EXPRESS COM 025816109 8,970 -3,000 -25.06 808 -25.60 0.0230
2014-02-20 2013-12-31 13F AMERICAN EXPRESS COM 025816109 11,970 3,000 33.44 1,086 38.34 0.0315
2014-11-21 2013-09-30 13F/A-1 AMERICAN EXPRESS COM 025816109 8,970 -3,000 -25.06 785 -12.29 0.0221
2013-11-20 2013-09-30 13F AMERICAN EXPRESS COM 025816109 11,970 904
2013-09-26 2013-06-30 13F AMERICAN EXPRESS COM 025816109 11,970 11,970 895 0.0297
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.