Ratio, Spread & Formula Charts
Plot one security against another over time — relative strength (A÷B), a spread (A−B), the ratio rebased to 100, or any FORMULA (e.g. MDT − 0.19 MMED = the implied value of core Medtronic ex its MiniMed stake). Any Yahoo symbol works, including indices (^GSPC) and ETFs (SPY, GLD). Decision-support, not advice.
NVDA ÷ SPYRebased · 100
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Daily closes aligned by calendar day. Formula mode evaluates any +, −, ×, ÷ of Yahoo tickers & numbers over the overlap of their histories — e.g. a spinoff "stub" like MDT − 0.19 MMED. Live from Yahoo via /api/ohlc — not investment advice.