Bill Ackman’s Pershing Square reportedly holds a sizable stake in Visa and Mastercard, highlighting how payment networks are still drawing premium interest

Billionaire investor Bill Ackman, through his hedge fund, is drawing renewed attention for a reported position in two of the world’s best-known payment networks: Visa and Mastercard. A Yahoo Finance report published in early October said Ackman’s hedge fund holds roughly 11% of its assets in Visa and Mastercard combined, and that the investor remains bullish despite the fact that the stocks trade at higher valuations than when the positions were originally initiated.

The report frames the stake as part of Pershing Square’s broader approach of backing large, durable franchises, and it points to the way Visa and Mastercard operate as core infrastructure for card-based payments. Unlike companies that rely on a single product cycle, payment networks earn fees when transactions occur, which can support steadier demand through normal shifts in consumer spending and travel patterns.

According to the Yahoo Finance write-up, one part of the investment case is that the stocks’ current pricing still reflects a recognizable value proposition for long-term investors. The article notes that Visa and Mastercard trade at more expensive valuations today than at the time Pershing Square began its positions, which implies the fund has already weathered market repricing rather than stepping away as multiples rose.

The same report also argues that there are multiple reasons the portfolio manager continues to like the companies, describing “three reasons” for his bullishness. However, the specific explanations for those three reasons are not included in the material available for this review, so they cannot be verified or restated here with precision.

Visa, for its part, is one of the largest global card networks, connecting issuing banks, acquiring partners (merchants’ payment processors), and consumers. Mastercard plays a similar role, processing card transactions and enabling settlement. In both businesses, the value proposition hinges on usage growth and merchant acceptance, along with the network economics that come from higher transaction volumes.

The sector backdrop matters. Payment networks are often viewed as regulated by scale and switching costs, since merchants and banks build infrastructure around established rails for authorization, clearing, and settlement. That means investors frequently evaluate not only payment growth, but also how resilient fee structures can be when regulators, consumer behavior, or competitive dynamics shift.

Still, Ackman’s reported stake is not the same as a company disclosure. Neither Visa nor Mastercard reported Ackman’s position or the size of his holdings in the materials provided for this review. Hedge fund concentrations typically become visible through periodic regulatory filings, public statements, or later reporting by financial media, none of which are reproduced here beyond what the Yahoo Finance post described.

What remains uncertain is the detail. The available information identifies the reported overall stake percentage and the general claim that the stocks now trade at higher valuations than when the positions began. But without access to the full text of the Yahoo Finance analysis, it is not possible to confirm what the report’s three specific reasons were, how the author quantified valuation changes, or whether the rationale included near-term catalysts, competitive threats, or regulatory risks. As a result, this story focuses on what is known and where the evidence ends.

Going forward, investors and readers will likely look for follow-through on both fronts: any updates to Pershing Square’s disclosed holdings and continued indicates on payment network usage and pricing power. For Visa and Mastercard, market watchers will also track guidance, transaction trends, and any regulatory developments that could affect network fees or card acceptance. Those datapoints often determine whether a “premium” valuation is sustainable when new money enters the trade or when expectations rise again.