Relative Volume Screener in SQL: Free API
Build a relative volume screener in SQL, with the time of day correction the RVOL formula needs, one curl call, no API key, and a ranked top 20 list.
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Why Relative Volume Differs Between Platforms
Relative volume rarely agrees across platforms. One AAPL session computed five ways from the same bars shows why readings split most in the first hour.
What Is RVOL (Relative Volume)? How to Read It
RVOL (relative volume) is a stock's volume ÷ its 20-day average: above 1 is busier-than-usual trading. Plus intraday time-of-day RVOL and what counts as high.