# William O'Neil + Company

William O'Neil + Company is an Asset Manager based in Los Angeles, United States.

## Overview

- **Organization type:** Asset Manager
- **Headquarters:** Los Angeles, United States
- **Region:** North America
- **Address:** Los Angeles, CA, United States
- **Founded:** 1963
- **Assets under management:** Undisclosed
- **Website:** williamoneil.com

## Regulatory record

- **CRD number:** 152620
- **SEC file number:** 801-120403
- **Registration status:** Registered
- **Reports private funds:** No
- **IAPD record:** https://adviserinfo.sec.gov/firm/summary/152620

## About

WILLIAM O'NEIL + COMPANY is an SEC-registered investment adviser in LOS ANGELES, CA, registered since 2021. The firm employs 39 staff members and 18 investment advisers. It operates from a single location.

## Sectors

- Technology
- Healthcare
- Consumer Cyclical
- Financial Services
- Industrial

## Offices

- New York, NY
- London, UK
- Tokyo, Japan

## People

- William O'Neil — Founder
- David O'Neil — Chief Executive Officer
- Scott O'Neil — President

## Questions

### Who runs investment decisions at William O'Neil + Company?

Investment decisions are directed by the O'Neil family leadership: David O'Neil serves as CEO and Scott O'Neil as President. The firm applies its proprietary CAN SLIM methodology across all portfolios, which is a quantitative and fundamental system developed by founder William O'Neil. Day-to-day stock selection is executed by a team of portfolio managers and analysts in Los Angeles.

### What is the CAN SLIM methodology?

CAN SLIM is a seven-principle stock-picking framework: Current earnings, Annual earnings (growth), New products or services, Supply and demand (share count), Leader or laggard (relative strength), Institutional sponsorship, and Market direction. It was formalized by William O'Neil in the 1960s and remains the firm's core investment process.

### Does William O'Neil + Company only invest in US equities?

The firm primarily invests in US-listed stocks with a growth orientation. Its mutual fund and ETF strategies focus on large-cap and mid-cap US companies. The firm's research database covers global stocks, but the asset-management side concentrates on US equities.

### What is MarketSmith and how does it relate to the asset management business?

MarketSmith is a research platform that provides charting, screening, and data analysis tools, widely used by institutional investors and active traders. It incorporates the same CAN SLIM screens used internally by the firm's portfolio managers. The revenue from MarketSmith subscriptions provides a fee stream independent of AUM-based management fees.

### How does the firm's 2024 ETF launch affect its strategy?

The O'Neil Global Growth ETF (ticker: ONECX), launched in January 2024, represents a move into the ETF wrapper for the firm's equity strategy. This provides retail and institutional investors with a lower-cost, daily-priced vehicle that follows the same CAN SLIM approach as the existing mutual fund. It signals a shift toward greater product accessibility.

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Last updated: 2026-06-03T20:00:00.000Z

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