Archived thesis
Mastercard
Deliberate exposure away from AI and compute: a toll on payment volume.
Investment case
Diversification, on purpose
Mastercard gives the portfolio exposure away from the AI and compute theme. That is the primary reason it is here. Most of the book's risk is tied to one capex cycle, and a business whose revenue tracks consumer and commercial payment volume is driven by something largely unrelated.
Network economics and payment volume
The appeal is margins, network economics, and the long-term ability to compound alongside increasing total payment volume. Mastercard takes a small fee on volume crossing its network and carries almost no incremental cost per transaction, which is why operating margin sits where it does.
Cross-border volume carries materially better economics than domestic transactions and is the most cyclical part of the mix, since it moves with travel and global commerce. Switched volume growth is the line that shows whether the network is gaining or losing share of spend.
What the risk actually is
The network itself is genuinely hard to replicate, so competitive displacement isn't the real bear case. The real risk is regulatory pressure on interchange and scheme fees, plus the slow emergence of account-to-account rails that bypass card networks. Neither moves quickly, but both compress the toll rather than the volume. That's why operating margin, not payment volume, is the line to watch.
Business economics
Reporting period through Q2 2026
Figures as filed with the SEC, and margins and growth rates calculated from them. Each chart has a data table.
Net revenue
Reported
Quarterly, US$ billions, Q3 2024 to Q2 2026
Filed as revenues. Fourth quarters are derived as the fiscal-year total less the other three quarters, since filings report no standalone Q4 figure.
Financial data through Q2 2026. Source: SEC filings (opens in a new tab)
Data table: Net revenue
| Period | Net revenue |
|---|---|
| Q3 2024 | $7.4B |
| Q4 2024 | $7.5B |
| Q1 2025 | $7.3B |
| Q2 2025 | $8.1B |
| Q3 2025 | $8.6B |
| Q4 2025 | $8.8B |
| Q1 2026 | $8.4B |
| Q2 2026 | $9.3B |
Revenue growth (YoY)
Calculated from reported figures
Quarterly, percent, Q3 2024 to Q2 2026
Year-over-year change, same quarter prior year, from SEC-reported figures.
Financial data through Q2 2026. Source: SEC filings (opens in a new tab)
Data table: Revenue growth (YoY)
| Period | Revenue growth (YoY) |
|---|---|
| Q3 2024 | 12.8% |
| Q4 2024 | 14.4% |
| Q1 2025 | 14.2% |
| Q2 2025 | 16.8% |
| Q3 2025 | 16.7% |
| Q4 2025 | 17.6% |
| Q1 2026 | 15.8% |
| Q2 2026 | 14.1% |
Operating margin
Calculated from reported figures
Quarterly, percent, Q3 2024 to Q2 2026
Calculated as operating income divided by revenue, both as filed.
Financial data through Q2 2026. Source: SEC filings (opens in a new tab)
Data table: Operating margin
| Period | Operating margin |
|---|---|
| Q3 2024 | 54.3% |
| Q4 2024 | 52.6% |
| Q1 2025 | 57.2% |
| Q2 2025 | 58.7% |
| Q3 2025 | 58.8% |
| Q4 2025 | 55.8% |
| Q1 2026 | 58.4% |
| Q2 2026 | 60.2% |
Risks and thesis invalidation
The thesis argues the case against itself in Network economics and payment volume and What the risk actually is.
Related decisions
InitiateWeight 0% → 5.0%
Opened to move exposure away from the AI and compute theme. The attraction is network economics, margins, and the ability to compound alongside rising payment volume without taking bank-style credit risk.
In the decision log
Sources and revisions
- Company filings: SEC EDGAR (opens in a new tab), through Q2 2026
- Holdings snapshot: October 16, 2026
- The analysis and views are Isaac Toffel's own.
Text revisions: Aug 27, 2026 · Aug 20, 2026.