Signal8 vs Trade Ideas: A Filing-Aware Scanner or a Deep Alert Engine

Every Trade Ideas cell comes from trade-ideas.com/pricing, checked on 2026-11-02.

Trade Ideas has been building scanners since 2002, per its site, and it shows in the depth: more than 500 alerts and filters, a Formula Editor, Multi-Strategy windows and, on Premium, Holly AI's daily signals, the OddsMaker backtester and auto trading.

Signal8 is narrower on alert conditions and broader on what sits behind a ticker. Its scanner can filter on things read from SEC filings: dilution risk, cash runway, ATM offerings, going concern language and delisting notices. Click a row and the same company's dilution snapshot, filings and insider trades are one page away.

If your edge is building and testing alert logic, Trade Ideas goes further. If you want to know whether a gapper has a shelf or an ATM sitting over it before you look at the chart, that is what Signal8 is built around.

Both plans include the Channel Bar's one-click scans, custom scans and Top Lists, real-time streaming alerts on every trade, a Formula Editor, and an AI Assistant that "describes a scan in plain English" and builds the window. You also get Stock Races, Multi-Strategy windows, up to 10 charts, TI Wave, price alerts, paper trading and in-app trading.

TI Premium adds Holly AI's daily signals, suggested stops and re-entry points, Smart Risk Levels on every signal, the OddsMaker backtester ("backtest any alert into a trading system") and auto trading.

Prices as of 2026-11-02: Standard is $127 billed monthly or $1,068 a year, and Premium is $254 monthly or $2,136 a year. A free account opens the Web Dashboard with just an email, for a limited time.

The scanner shows premarket, intraday and after-hours movers on one board, with presets that include Top Movers, Gap Up, Low Float, Squeeze, High Dilution, Catalyst, Earnings, Halted, Delist Watch and Distress. Logged out it runs five minutes behind; a free account makes it real time.

Pro ($59 a month, or $588 a year, as of 2026-11-02) adds custom filters on price, change, RVOL, volume, float and market cap, plus the filing-based filters listed above. Radar fires premarket alerts from 5am ET when a stock meets its rules; Pro sees them live with tickers, and previous sessions are free to browse. The Terminal puts premarket volume, RVOL, VWAP and float beside flags for cash runway, ATM selling and warrant overhang. The API and MCP server are included.

• Far fewer alert conditions. Trade Ideas lists more than 500 alerts and filters and lets you write formulas. Signal8's filter set is short by comparison and has no formula editor.
• No backtesting, paper trading or auto trading. Trade Ideas includes paper trading on both plans and OddsMaker and auto trading on Premium. Signal8 offers none of them.
• No AI trade signals. Radar alerts mean a stock met a rule at that moment; they come with no suggested stops or entries, unlike Holly AI.
• No desktop app and no multi-window layout like Trade Ideas' Multi-Strategy windows.

• No filing-based filters listed. Its pricing page lists no dilution, cash runway or SEC filing filters as of 2026-11-02.
• Higher entry price. TI Standard is $127 a month against $59 for Signal8 Pro, billed monthly.
• No API listed on its pricing page.

Trade Ideas fits if you design your own scans and want to backtest them, if you want Holly AI's daily signals, or if you want paper or auto trading from the same tool.

Signal8 fits if your shortlist is small caps where an offering can land at any time, and you want dilution, cash runway and filing flags on the same board as gap and float, at a lower monthly price.

If dilution terms are new, the Academy guides what is dilution and cash runway are a quick start, and how Radar works explains what an alert does and does not mean.