William O'Neil

The Institutional Edge

CANSLIM — Fundamental + Technical Leadership

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O'Neil developed CAN SLIM from research into historic market leaders and founded Investor's Daily in 1984. The framework combines earnings and sales growth, leadership, institutional demand, chart bases, and market direction.

Method principle · Legend AI synthesis Combine fundamental leadership with constructive price-and-volume action, and respect the direction of the general market.

Key Rules

C: Current quarterly EPS up 25%+ vs year ago
A: Annual EPS growth 25%+ for 3 consecutive years
N: New product, service, or management + New highs
S: Supply — small/mid float with institutional demand
L: Leader — RS Rating 80+ in top-performing industry
I: Institutional sponsorship increasing each quarter
M: Market in confirmed uptrend — follow the general market

Public Sources

William O'Neil + Co. methodology ↗ O'Neil Securities company history ↗ Profile copy is a Legend AI summary of published methodology, not a quotation or endorsement.

Signature Patterns

Cup & Handle → Flat Base → High Tight Flag → Pocket Pivot →

Legend AI implements William O'Neil's published methodology for educational pattern detection. Not affiliated with or endorsed by William O'Neil. Not investment advice. Full disclaimer →