What it does
Public combines investment accounts with market briefings, earnings summaries and chart-linked event explanations. It also offers a trading API, automated strategies and several asset-specific accounts. AI summaries can help locate events to investigate, while the underlying company announcement remains useful context.
Key Moments places contextual summaries on an asset’s performance chart. Earnings-call summaries focus on company results and outlook; the daily market briefing covers broader developments. The research assistant accepts questions about financials, competitors and historical prices. Check an important conclusion against the original announcement.
Account and execution costs
US-listed stock and ETF commissions are US$0 during regular and extended market hours. Order routing can add a fee:
| Routing choice | Execution charge |
|---|---|
| Wholesale | US$0 |
| Smart Order | US$0.003 per share |
| Lit Exchanges Only | US$0.003 per share |
Regulatory charges and other product fees are separate. The optional Reserve membership costs US$20 monthly or US$200 annually and renews until cancelled.
Investing requires an account, age 18 or older, an SSN, a legal US address and citizenship, permanent residence or a valid visa. Start by choosing the account and asset type; fees for bonds, crypto and advisory strategies differ from ordinary stock orders.
Strengths
- Key Moments connects price history with event summaries
- Offers both an interactive research assistant and a trading API
Watch out for
- Some stock-routing choices add per-share execution charges
- AI-generated research summaries need checking against original information
Best for
- Eligible US investors researching company events alongside holdings
- Developers exploring a brokerage trading integration
Sources
- Public research features and brokerage product catalogue (Oct 27, 2026)
- Public fee schedule for brokerage and membership (Oct 27, 2026)
- Public US account eligibility (Oct 27, 2026)