The market,
made simple.
blue scores every stock with a simple A–F grade and explains what it means — in plain English. No jargon, no guesswork, just a clear answer you can act on.
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Score a stock.
Type a ticker and get its A–F grade.
What makes blue different.
Grounded in fundamentals
Every grade comes from a company's real financials — not headlines or market noise.
Built for long-term investors
Not day trading. Not speculation. blue is made for steady, informed decisions you can hold to.
One grade, not a spreadsheet
We turn pages of financials into a single A–F you can act on in seconds.
Go further than one stock.
Grade your entire portfolio and browse every S&P 500 stock by score — all in one place.
Add what you own and get a single grade for your entire portfolio — plus your return since you started tracking.
Portfolio Score
Total Value
$45,000
+5.2% since added
| Ticker | Company | Shares | Price | Value | Weight | Score | Grade |
|---|---|---|---|---|---|---|---|
| COST | Costco Wholesale | 20 | $900.00 | $18,000.00+8.3% | 40% | 74 | B |
| XOM | Exxon Mobil | 100 | $157.50 | $15,750.00-2.1% | 35% | 53 | C |
| CAT | Caterpillar Inc. | 30 | $375.00 | $11,250.00+4.7% | 25% | 57 | C |
Free Education — No Account Required
Most tools give you data. We explain what it means.
13 free lessons in plain English. No signup. No jargon. Start reading right now — even if you've never bought a stock in your life.
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