Public

Public is a US multi-asset brokerage that has built AI into its core experience: the Alpha assistant answers market questions using LLMs, an AI portfolio manager automates recurring actions, and AI Agents (rolling out from March 2026) let users describe strategies in plain language and, after approval, monitor markets and execute trades. It suits self-directed investors who want research and automation in one app rather than a human advisor.

Public (operated by Open to the Public Investing, Inc.) is a multi-asset investing platform that has increasingly positioned itself around AI. Its Alpha feature is an AI research assistant, powered by large language models, that summarizes market news and lets members ask questions with context drawn from Public's market data. In late 2025 and into 2026 the company expanded this into an AI-powered portfolio manager and, in March 2026, began rolling out AI Agents that let investors describe a strategy in plain language and, after review and approval, automate monitoring and trade execution across stocks, ETFs, options, crypto, bonds, and cash. Beyond AI, Public offers a broad brokerage: fractional shares, a high-yield cash account, bonds and Treasury access, options, crypto, and AI-assisted custom indexes (self-directed baskets that carry a stated management fee). The app is designed for self-directed retail investors who want research tooling and automation in one place rather than a fully human-advised experience. The AI agents and automation features are notable as an early attempt to bring agentic AI directly into retail brokerage workflows. Because agents can place real trades, Public frames them around user-defined rules and explicit approval steps, and the features sit alongside the usual brokerage disclosures. As with all of the company's tools, outputs are informational and not personalized investment advice.