Mastercard Incorporated
US ˙ NYSE ˙ US57636Q1040

SecurityMA / Mastercard Incorporated
InstitutionBaxter Bros Inc
Latest Disclosed Ownership31,307 shares
Latest Disclosed Value $ 15,642,856
Baxter Bros Inc reports 0.93% decrease in ownership of MA / Mastercard Incorporated

On April 28, 2026 - Baxter Bros Inc filed a 13F-HR form disclosing ownership of 31,307 shares of Mastercard Incorporated (US:MA) valued at $15,642,856 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 31,602 shares of Mastercard Incorporated. This represents a change in shares of -0.93% during the quarter. The current value of the position is $14,762,816 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.

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)
2026-04-28 2026-03-31 13F MASTERCARD CL A 57636Q104 31,307 -295 -0.93 15,643 -13.29 1.9309
2026-01-26 2025-12-31 13F MASTERCARD CL A 57636Q104 31,602 -275 -0.86 18,041 -0.50 2.0876
2025-10-14 2025-09-30 13F MASTERCARD CL A 57636Q104 31,877 -676 -2.08 18,132 -0.88 2.0959
2025-07-24 2025-06-30 13F MASTERCARD CL A 57636Q104 32,553 -680 -2.05 18,293 0.42 2.2375
2025-04-09 2025-03-31 13F MASTERCARD CL A 57636Q104 33,233 -793 -2.33 18,216 1.66 2.3992
2025-02-12 2024-12-31 13F MASTERCARD CL A 57636Q104 34,026 -97 -0.28 17,917 6.34 2.3436
2024-10-29 2024-09-30 13F MASTERCARD CL A 57636Q104 34,123 -1,048 -2.98 16,850 8.59 2.1907
2024-07-15 2024-06-30 13F MASTERCARD CL A 57636Q104 35,171 -271 -0.76 15,516 -9.09 2.0309
2024-04-29 2024-03-31 13F MASTERCARD CL A 57636Q104 35,442 -653 -1.81 17,068 10.87 2.1891
2024-05-17 2023-12-31 13F/A-1 MASTERCARD CL A 57636Q104 36,095 -408 -1.12 15,395 6.53 2.1326
2024-02-06 2023-12-31 13F Mastercard COM 57636Q104 36,095 -408 15,395 2.1761
2024-05-17 2023-09-30 13F/A-1 MASTERCARD CL A 57636Q104 36,503 -337 -0.91 14,452 -0.26 2.1938
2023-10-23 2023-09-30 13F Mastercard COM 57636Q104 36,503 -337 14,452 2.2220
2023-08-14 2023-06-30 13F Mastercard COM 57636Q104 36,840 -4 -0.01 14,489 8.22 2.1549
2023-05-15 2023-03-31 13F Mastercard COM 57636Q104 36,844 215 0.59 13,389 5.12 2.1049
2023-02-01 2022-12-31 13F Mastercard COM 57636Q104 36,629 118 0.32 12,737 22.68 2.0940
2022-11-14 2022-09-30 13F Mastercard COM 57636Q104 36,511 2,552 7.51 10,382 -3.09 1.8398
2022-07-25 2022-06-30 13F Mastercard COM 57636Q104 33,959 -904 -2.59 10,713 -14.01 1.9223
2022-04-20 2022-03-31 13F Mastercard COM 57636Q104 34,863 130 0.37 12,459 -0.17 1.8710
2022-01-14 2021-12-31 13F Mastercard COM 57636Q104 34,733 587 1.72 12,480 5.12 1.8087
2021-10-25 2021-09-30 13F Mastercard COM 57636Q104 34,146 238 0.70 11,872 -4.10 1.9003
2021-08-11 2021-06-30 13F Mastercard COM 57636Q104 33,908 475 1.42 12,379 3.99 1.9615
2021-04-23 2021-03-31 13F Mastercard COM 57636Q104 33,433 810 2.48 11,904 2.23 2.0451
2021-01-25 2020-12-31 13F Mastercard COM 57636Q104 32,623 243 0.75 11,644 6.34 2.2056
2020-11-05 2020-09-30 13F Mastercard COM 57636Q104 32,380 40 0.12 10,950 14.50 2.3681
2020-07-31 2020-06-30 13F Mastercard COM 57636Q104 32,340 -1,133 -3.38 9,563 18.27 2.2442
2020-04-17 2020-03-31 13F Mastercard COM 57636Q104 33,473 2,571 8.32 8,086 -12.37 2.0946
2020-01-10 2019-12-31 13F/A-20 Mastercard COM 57636Q104 30,902 527 1.73 9,227 11.86 1.9206
2020-01-09 2019-12-31 13F Mastercard COM 57636Q104 6,560 -23,815 565 200,833.1912
2019-10-21 2019-09-30 13F Mastercard COM 57636Q104 30,375 2,951 10.76 8,249 13.72 1.8674
2019-07-29 2019-06-30 13F Mastercard COM 57636Q104 27,424 3,515 14.70 7,254 28.87 1.6574
2019-04-22 2019-03-31 13F Mastercard COM 57636Q104 23,909 -158 -0.66 5,629 23.99 1.3150
2019-01-22 2018-12-31 13F Mastercard COM 57636Q104 24,067 1,065 4.63 4,540 -11.33 1.2316
2018-10-11 2018-09-30 13F Mastercard COM 57636Q104 23,002 280 1.23 5,120 14.67 1.2287
2018-07-17 2018-06-30 13F Mastercard COM 57636Q104 22,722 3,505 18.24 4,465 32.65 1.2004
2018-05-16 2018-03-31 13F Mastercard COM 57636Q104 19,217 4,727 32.62 3,366 53.49 0.9181
2018-02-01 2017-12-31 13F Mastercard COM 57636Q104 14,490 1,980 15.83 2,193 24.18 0.6009
2017-10-16 2017-09-30 13F Mastercard COM 57636Q104 12,510 -180 -1.42 1,766 14.60 0.5075
2017-08-01 2017-06-30 13F Mastercard COM 57636Q104 12,690 -600 -4.51 1,541 3.08 0.4639
2017-04-24 2017-03-31 13F Mastercard COM 57636Q104 13,290 1,445 12.20 1,495 22.24 0.4676
2017-01-19 2016-12-31 13F Mastercard COM 57636Q104 11,845 1,500 14.50 1,223 16.14 0.3937
2016-10-20 2016-09-30 13F Mastercard COM 57636Q104 10,345 1,915 22.72 1,053 41.91 0.3559
2016-07-07 2016-06-30 13F Mastercard COM 57636Q104 8,430 -150 -1.75 742 -11.14 0.2595
2016-02-08 2015-12-31 13F Mastercard COM 57636Q104 8,580 -355 -3.97 835 0.00 0.3094
2015-10-05 2015-09-30 13F Mastercard COM 57636Q104 8,935 0 0.00 835 0.00 0.3066
2015-07-07 2015-06-30 13F Mastercard COM 57636Q104 8,935 625 7.52 835 16.30 0.3063
2015-04-16 2015-03-31 13F Mastercard COM 57636Q104 8,310 1,750 26.68 718 27.08 0.2612
2015-01-22 2014-12-31 13F Mastercard COM 57636Q104 6,560 6,560 565 0.2044
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.