STACK scores thousands of US-listed companies on the investing principles that actually matter: value, quality, earnings that hold up, growth, trend, risk, who is buying and the market backdrop. Safety gates cap the score when a stock looks like a temporary spike. For the S&P 500, an AI model has read the real numbers, headlines and market context and written a plain-English summary for each company. For the full US market, STACK builds the read directly from the data.
The pros have published their exact rules for what makes a good stock. Those rules are public. Nobody put them in one place and ran them on every company — until now. If a retail investor could actually see that, clearly, they would at least know what they own and why.
Every stock is scored on value, quality, durability, growth, trend, risk, flows and the market backdrop, with each principle weighted by how well it is evidenced. You see what is strong, what is weak, and exactly where they disagree. The famous investors (Buffett, Lynch, Dalio, Taleb) are shown separately.
For S&P 500 stocks, an AI model was given each company’s real fundamentals, recent headlines and the market backdrop and wrote a plain-English thesis. Every number it quoted was matched against the data, and any draft whose numbers or names did not match was thrown out and rewritten. The check catches most slips but is not a guarantee.
Price chart with the 50- and 200-day averages and the golden cross, trend stage, distance from the 50-day, position in the 52-week range. STACK tells you whether it's a fresh setup or extended near highs.
Type a ticker or a company name. STACK pulls the real fundamentals, price history, news and flows.
One instrument shows every lens at a glance. Longer bars are more bullish. Tap any bar for that lens's reasons.
An AI-written read condenses the business, the timing and the thesis into a plain-English summary with a clear verdict.
Open the terminal and look up your first stock.