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An AI-first stock screener and backtester for US stocks and ETFs. Build screens in plain English across technicals, fundamentals, news sentiment and insider trades, then backtest the screen itself. Every AI answer cites its source.

Website, pricing, platforms and company facts side by side.
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| Website | stackgo.io | ninethirty.ai |
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| Company | — | 10 - 19 employees · 2026 |
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No description of StackGo yet.
Most traders build a shortlist in one tool and reason about it in another. The screener returns tickers, the thinking happens in a spreadsheet, and weeks later nobody remembers which condition was the actual bet. NineThirty closes that gap for US equities and ETFs. Screen in plain English Type...
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