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Glossary

Signal

In investing, a signal is any single data point or pattern used as input to a decision - a valuation ratio, an insider purchase, an earnings surprise, a sentiment shift in a call transcript. Strategies typically combine multiple signals rather than relying on just one, since any individual signal can be noisy or misleading in isolation.

Related terms
SEC EDGAREDGAR (Electronic Data Gathering, Analysis, and Retrieval) is the SEC's public database of company filings, including 10-Ks, 10-Qs, and Form 4s. It is...Stock ScreenerA stock screener is a tool that filters a universe of stocks down to those meeting specific criteria - like a minimum ROIC, maximum P/E, or positive...Scoring ModelA scoring model assigns a numerical score to each stock in a universe based on a weighted combination of factors - such as valuation, growth, quality,...Systematic InvestingSystematic investing applies consistent, rules-based logic across every decision, in contrast to discretionary investing, which relies on case-by-case...
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