ASX Penny Stocks Under $1: How to Screen Them Systematically

4 min read Methodology

Penny stocks — loosely defined as ASX-listed shares trading under $1 — attract attention for their perceived upside potential. But the vast majority of sub-dollar stocks on the ASX lack the liquidity, fundamentals, or catalyst activity to justify serious research time.

This article outlines a quantitative approach to filtering the noise.

Why Most Penny Stocks Fail the Screen

Of the 2,200+ securities listed on the ASX, a significant portion trade below $1. Many of these are shell companies, suspended stocks, or companies with negligible trading volume. Without systematic filtering, you're searching for needles in a haystack of dormant tickers.

Key Screening Filters

SmallCapData's algorithm applies several filters before a sub-dollar stock even enters the screening pipeline:

Minimum Volume At least 10,000 shares average daily volume over 20 sessions — ensures you can realistically enter and exit a position
Market Cap Floor Excludes micro-shells with market caps below a proprietary threshold
Cash Runway Companies burning cash with less than 6 months of runway receive a fundamental penalty
Price Activity Stocks that haven't traded in 5+ days are excluded as likely suspended or illiquid

What the Signal Tells You

A penny stock that passes these filters and is flagged by Scout's composite model (technical + catalyst + sentiment + fundamental + momentum + risk) is not a recommendation. It's a data point indicating that the stock exhibits certain quantitative characteristics that have historically been associated with near-term price activity.

Common Pitfalls

Low-priced stocks have wider percentage spreads, making them more expensive to trade than they appear. A stock at $0.05 with a $0.005 spread has a 10% round-trip cost before it moves in your favour. Always check the bid-ask spread before considering any sub-dollar ASX stock.

Penny stocks are also more susceptible to manipulation, pump-and-dump schemes, and misleading announcements. The screener's sentiment dimension can flag unusual community activity, but it cannot detect deliberate manipulation.

View today's screened signals on the dashboard →

Penny stocks carry elevated risk including total loss of capital, illiquidity, and potential for manipulation. This article is general information about screening methodology, not a recommendation to trade penny stocks.

GENERAL INFORMATION ONLY — This article is produced by an algorithm and does not constitute personal financial advice, a recommendation, or an offer to buy or sell any security. SmallCapData does not hold an Australian Financial Services Licence (AFSL). You should consider seeking independent financial advice before making any investment decision. Past performance is not indicative of future results.
Share this article

Want Scout's signals in your inbox?

Scout scans 2,200+ ASX small caps up to 6x per trading day. Get free access to all signals, watchlist alerts, and the AI-powered dashboard.

No credit card required. Free forever tier available.
Check your email — you're in! Open Dashboard
Open Dashboard Free Screener

Related Articles

ASX Small Cap ETFs vs Individual Stock Screening: A Comparison
Comparing ASX small cap ETFs with algorithmic individual stock screening — fees, coverage, flexibility, and risk profile
ASX Stocks with Director Buying This Week — 01 May 2026
31 ASX small caps show net director buying activity. Top: AMI. Updated weekly from ASIC disclosure data.
ASX Breakout Stocks Today — Fri 01 May 2026
779 ASX small caps showing breakout patterns or unusual volume today. Top: ACU. Daily scan results.
← Back to all articles