Mastercard Incorporated
US ˙ NYSE ˙ US57636Q1040

SecurityMA / Mastercard Incorporated
InstitutionOMERS ADMINISTRATION Corp
Latest Disclosed Ownership340,533 shares
Latest Disclosed Value $ 170,150,719
OMERS ADMINISTRATION Corp reports 8.43% decrease in ownership of MA / Mastercard Incorporated

On May 15, 2026 - OMERS ADMINISTRATION Corp filed a 13F-HR form disclosing ownership of 340,533 shares of Mastercard Incorporated (US:MA) valued at $170,150,719 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 371,880 shares of Mastercard Incorporated. This represents a change in shares of -8.43% during the quarter. The current value of the position is $160,578,336 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 340,533 -31,347 -8.43 170,151 -19.85 1.0941
2026-02-13 2025-12-31 13F MASTERCARD CL A 57636Q104 371,880 -84,938 -18.59 212,299 -18.30 1.5131
2025-11-14 2025-09-30 13F MASTERCARD CL A 57636Q104 456,818 -700 -0.15 259,843 1.07 1.8611
2025-08-13 2025-06-30 13F MASTERCARD CL A 57636Q104 457,518 -54,664 -10.67 257,098 -8.42 2.0198
2025-05-14 2025-03-31 13F MASTERCARD CL A 57636Q104 512,182 -2,299 -0.45 280,737 3.63 2.4564
2025-02-14 2024-12-31 13F MASTERCARD CL A 57636Q104 514,481 3,874 0.76 270,910 7.45 2.3692
2024-11-13 2024-09-30 13F MASTERCARD CL A 57636Q104 510,607 -200 -0.04 252,138 11.89 2.3210
2024-08-13 2024-06-30 13F MASTERCARD CL A 57636Q104 510,807 -61,025 -10.67 225,348 -18.17 2.1702
2024-05-14 2024-03-31 13F MASTERCARD CL A 57636Q104 571,832 0 0.00 275,377 12.91 3.1499
2024-02-13 2023-12-31 13F MASTERCARD CL A 57636Q104 571,832 105,294 22.57 243,892 32.04 3.0789
2023-11-13 2023-09-30 13F MASTERCARD CL A 57636Q104 466,538 78,000 20.08 184,707 20.87 2.7813
2023-08-14 2023-06-30 13F MASTERCARD CL A 57636Q104 388,538 0 0.00 152,812 8.22 2.3775
2023-05-12 2023-03-31 13F MASTERCARD CL A 57636Q104 388,538 0 0.00 141,199 4.51 2.1766
2023-02-13 2022-12-31 13F MASTERCARD CL A 57636Q104 388,538 0 0.00 135,106 22.29 2.1635
2022-11-14 2022-09-30 13F MASTERCARD CL A 57636Q104 388,538 -135,800 -25.90 110,477 -33.21 1.8444
2022-08-12 2022-06-30 13F MASTERCARD CL A 57636Q104 524,338 0 0.00 165,418 -11.72 2.3884
2022-05-12 2022-03-31 13F MASTERCARD CL A 57636Q104 524,338 216,700 70.44 187,388 69.52 2.4045
2022-02-14 2021-12-31 13F MASTERCARD CL A 57636Q104 307,638 33,000 12.02 110,540 15.77 1.4336
2021-11-12 2021-09-30 13F MASTERCARD CL A 57636Q104 274,638 12,900 4.93 95,486 -0.08 1.3901
2021-08-13 2021-06-30 13F MASTERCARD CL A 57636Q104 261,738 41,138 18.65 95,558 21.66 1.3863
2021-05-14 2021-03-31 13F MASTERCARD CL A 57636Q104 220,600 0 0.00 78,545 -0.25 1.2442
2021-02-12 2020-12-31 13F MASTERCARD CL A 57636Q104 220,600 61,000 38.22 78,741 45.89 1.4202
2020-11-12 2020-09-30 13F MASTERCARD CL A 57636Q104 159,600 17,100 12.00 53,972 28.09 1.1403
2020-08-14 2020-06-30 13F MASTERCARD CL A 57636Q104 142,500 -11,000 -7.17 42,137 13.64 1.3984
2020-05-15 2020-03-31 13F MASTERCARD CL A 57636Q104 153,500 119,945 357.46 37,079 270.09 1.6612
2020-02-14 2019-12-31 13F MASTERCARD CL A 57636Q104 33,555 -3,600 -9.69 10,019 -0.70 0.1156
2019-11-12 2019-09-30 13F MASTERCARD CL A 57636Q104 37,155 7,900 27.00 10,090 28.63 0.1005
2019-08-08 2019-06-30 13F MASTERCARD CL A 57636Q104 29,255 -1,600 -5.19 7,844 4.20 0.0816
2019-05-15 2019-03-31 13F MASTERCARD CL A 57636Q104 30,855 2,000 6.93 7,528 38.31 0.0866
2019-02-14 2018-12-31 13F MASTERCARD CL A 57636Q104 28,855 -3,800 -11.64 5,443 -25.12 0.0732
2018-11-14 2018-09-30 13F MASTERCARD CL A 57636Q104 32,655 -6,300 -16.17 7,269 -5.04 0.0696
2018-08-09 2018-06-30 13F MASTERCARD CL A 57636Q104 38,955 1,500 4.00 7,655 16.67 0.0707
2018-05-11 2018-03-31 13F MASTERCARD CL A 57636Q104 37,455 -5,100 -11.98 6,561 1.86 0.0638
2018-05-14 2017-12-31 13F/A-1 MASTERCARD CL A 57636Q104 42,555 14,500 51.68 6,441 62.61 0.0643
2018-02-13 2017-12-31 13F MASTERCARD CL A 57636Q104 42,555 14,500 6,441
2018-05-14 2017-09-30 13F/A-1 MASTERCARD CL A 57636Q104 28,055 8,700 44.95 3,961 68.48 0.0438
2017-11-13 2017-09-30 13F MASTERCARD CL A 57636Q104 28,055 8,700 3,961
2017-08-08 2017-06-30 13F MASTERCARD CL A 57636Q104 19,355 19,355 2,351 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.