Mastercard Incorporated
IT ˙ BIT ˙ US57636Q1040
401,30 € ↓ -14,30 (-3,44%)
2026-06-03
DEL PRIS
SecurityIT:1MA / Mastercard Incorporated
InstitutionCastleark Management Llc
Latest Disclosed Ownership92,013 shares
Latest Disclosed Value $ 45,975,216
Castleark Management Llc reports 10.19% decrease in ownership of 1MA / Mastercard Incorporated

On May 15, 2026 - Castleark Management Llc filed a 13F-HR form disclosing ownership of 92,013 shares of Mastercard Incorporated (IT:1MA) valued at $39,579,392 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 102,451 shares of Mastercard Incorporated. This represents a change in shares of -10.19% during the quarter. The current value of the position is $38,314,213 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 MASTERCARD CL A 57636Q104 92,013 -10,438 -10.19 45,975 -21.39 1.5213
2026-02-12 2025-12-31 13F MASTERCARD CL A 57636Q104 102,451 2,122 2.12 58,487 2.49 1.7169
2025-11-17 2025-09-30 13F MASTERCARD CL A 57636Q104 100,329 -30,705 -23.43 57,068 -22.50 1.6001
2025-08-18 2025-06-30 13F MASTERCARD CL A 57636Q104 131,034 -5,973 -4.36 73,633 -1.95 2.2129
2025-05-15 2025-03-31 13F MASTERCARD CL A 57636Q104 137,007 1,738 1.28 75,096 5.43 2.6026
2025-02-18 2024-12-31 13F MASTERCARD CL A 57636Q104 135,269 4,500 3.44 71,229 10.31 2.4843
2024-11-15 2024-09-30 13F MASTERCARD CL A 57636Q104 130,769 -2,248 -1.69 64,574 10.04 2.6323
2024-08-14 2024-06-30 13F MASTERCARD CL A 57636Q104 133,017 1,710 1.30 58,682 -7.20 2.3969
2024-05-16 2024-03-31 13F MASTERCARD CL A 57636Q104 131,307 -1,774 -1.33 63,234 11.40 2.6306
2024-02-15 2023-12-31 13F MASTERCARD CL A 57636Q104 133,081 -38,576 -22.47 56,760 -16.48 2.5159
2023-11-15 2023-09-30 13F MASTERCARD CL A 57636Q104 171,657 -15,350 -8.21 67,961 -7.60 3.4627
2023-08-16 2023-06-30 13F MASTERCARD CL A 57636Q104 187,007 -18,670 -9.08 73,550 -1.60 3.3313
2023-05-16 2023-03-31 13F MASTERCARD CL A 57636Q104 205,677 -3,120 -1.49 74,745 2.95 3.6717
2023-02-10 2022-12-31 13F MASTERCARD CL A 57636Q104 208,797 0 0.00 72,605 22.29 3.7925
2022-11-15 2022-09-30 13F MASTERCARD CL A 57636Q104 208,797 4,340 2.12 59,369 -7.96 3.3038
2022-08-16 2022-06-30 13F MASTERCARD CL A 57636Q104 204,457 790 0.39 64,502 -11.38 3.4519
2022-05-16 2022-03-31 13F MASTERCARD CL A 57636Q104 203,667 -10,830 -5.05 72,787 -5.56 3.1411
2022-02-16 2021-12-31 13F MASTERCARD CL A 57636Q104 214,497 20,480 10.56 77,073 14.26 2.8335
2021-11-12 2021-09-30 13F MASTERCARD CL A 57636Q104 194,017 11,735 6.44 67,456 1.36 2.5792
2021-08-17 2021-06-30 13F MASTERCARD CL A 57636Q104 182,282 19,810 12.19 66,549 15.04 2.2355
2021-05-14 2021-03-31 13F MASTERCARD CL A 57636Q104 162,472 31,045 23.62 57,848 23.31 2.0829
2021-02-17 2020-12-31 13F MASTERCARD CL A 57636Q104 131,427 -3,255 -2.42 46,912 3.00 1.7561
2020-11-16 2020-09-30 13F MASTERCARD CL A 57636Q104 134,682 -6,160 -4.37 45,545 9.36 1.7847
2020-08-14 2020-06-30 13F MASTERCARD CL A 57636Q104 140,842 98,502 232.65 41,647 307.19 1.8112
2020-05-13 2020-03-31 13F MASTERCARD CL A 57636Q104 42,340 42,340 10,228 0.6056
2016-02-17 2015-12-31 13F MASTERCARD CL A 57636Q104 0 0 0 0.0000
2015-02-10 2014-12-31 13F MASTERCARD CL A 57636Q104 0 -695,940 -100.00 0 -100.00
2014-11-17 2014-09-30 13F MASTERCARD CL A 57636Q104 695,940 695,940 0.00 51,987 1.4782
2014-08-15 2014-06-30 13F MASTERCARD CL A 57636Q104 0 -695,940 -100.00 0 -100.00
2014-05-20 2014-03-31 13F MASTERCARD CL A 57636Q104 695,940 625,894 893.55 51,987 -11.17 1.4782
2014-02-20 2013-12-31 13F MASTERCARD CL A 57636Q104 70,046 -30,384 -30.25 58,521 -13.39 1.6987
2013-11-20 2013-09-30 13F MASTERCARD CL A 57636Q104 100,430 25,040 33.21 67,567 56.00 2.0099
2013-09-26 2013-06-30 13F MASTERCARD INC - CL A COM 57636Q104 75,390 75,390 43,312 1.4369
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.