Visa Stock Edges Up as Company Tackles AI Security Risks

Visa's stock closed at EUR 324.13 after-hours on September 29, 2026, showing a minor increase of 0.30 percent from its prior close.

The company has been making headlines for its AI security efforts and research into stablecoins.

In an effort to address vulnerabilities exposed by AI models, Visa has open-sourced part of its AI-powered cyber defense system. This move comes after weaknesses were revealed in the system by Anthropic's Mythos AI model earlier this year.

Visa also conducted a study on consumer attitudes towards stablecoins, which found that adding bank-level fraud protection and deposit insurance could increase hypothetical intent to use them from 36% to 56%. The study surveyed 2,192 U.S. adults between February 24 and March 2, 2026.