Quick Summary
- Share prices for Visa (V), Mastercard (MA), and American Express (AXP) have declined 18–23% from peak levels amid stablecoin competition and proposed interest rate regulations
- Mastercard completed a landmark $1.8 billion acquisition of stablecoin infrastructure provider BVNK
- Visa introduced crypto CLI technology for AI-driven transactions and expanded contactless payment coverage to 80% of in-person purchases
- Stripe unveiled the Machine Payments Protocol with blockchain partner Tempo, supported by $500 million in capital
- Wall Street forecasts low double-digit earnings expansion for payment processors in 2026, anticipating aggregate revenue of $163 billion
The world’s dominant payment processors have experienced significant stock price corrections from their all-time peaks. Visa (V) shares have retreated 19%, Mastercard (MA) is down 18%, and American Express (AXP) has fallen 23%. The decline stems from two primary catalysts: President Trump’s proposal to cap credit card interest rates at 10%, and mounting anxiety that cryptocurrency stablecoins could undermine the card networks’ core business model.
Stablecoins enable businesses to process transactions more quickly and economically than conventional payment networks. This capability has rattled Wall Street. However, instead of adopting a defensive posture, these financial giants are aggressively adapting their strategies.
Mastercard finalized a deal to purchase BVNK, a stablecoin technology platform, in a transaction valued at up to $1.8 billion. This represents the biggest stablecoin acquisition on record. Financial analyst Sanjay Sakhrani from Keefe, Bruyette & Woods characterized the move as “a critical, long-term strategic move” that establishes Mastercard as a connector between conventional payment systems and stablecoin infrastructure.
Visa (V) hasn’t remained idle either. The company’s contactless payment technology, which incorporates stablecoin functionality, now represents 80% of all in-person transaction volume. Additionally, Visa rolled out Visa CLI, a command-line interface enabling artificial intelligence agents to execute card-based payments directly through terminal access.
Artificial Intelligence Systems Enter the Payment Ecosystem
This development signals a broader transformation. This week, Stripe partnered with blockchain company Tempo to introduce the Machine Payments Protocol, an open framework allowing AI agents to autonomously purchase services — including API access, data subscriptions, and computing resources — by consolidating numerous micro-transactions into single blockchain settlements.
Tempo secured $500 million in funding last October at a $5 billion valuation. The company’s chief executive is Matt Huang, Paradigm co-founder, who also serves on Stripe’s board of directors.
Initial collaborators for this protocol include Anthropic, OpenAI, DoorDash, Shopify, Revolut, plus both Visa and Mastercard. These payment industry leaders are functioning as partners in this ecosystem, not merely rivals.
Morgan Stanley estimates that autonomous AI commerce could generate $385 billion in U.S. online sales by 2030. Stablecoin payment volume reached $33 trillion in 2025, representing 72% annual growth.
Critical Implications for Payment Processors
A February 2026 analysis from Citrini Research highlighted a specific risk: AI agents, optimized to minimize expenses, could detect the 2–3% interchange fees imposed by Visa and Mastercard and circumvent them by utilizing stablecoins, where transaction costs measure mere fractions of a cent.
Visa handles $17 trillion in annual payment volume. Mastercard and Visa currently command forward price-to-earnings multiples of approximately 24 and 22 respectively, considerably below their historical averages. American Express trades at roughly 16 times forward earnings.
Financial analysts have actually increased their 2026 profit projections modestly. They anticipate combined earnings per share growth in the low teens for these companies, driven by approximately 10% revenue expansion to $163 billion.
Stripe handled $1.9 trillion in transaction volume throughout 2025 and purchased stablecoin technology firm Bridge for $1.1 billion, strategically positioning itself to control payment infrastructure rather than compensating card networks for network access.
Huang acknowledged that “agentic payments is very early, and we still are figuring out the best way to structure these.”
