Reading the ASX Order Book: How Intraday Traders Actually Find Edgeeric

Most trading content on the internet is about charts. Moving averages, candlestick patterns, RSI divergences, breakouts above resistance. It's an easy thing to teach because a chart is a picture, and pictures make good screenshots.

Over the past few months I've been reading, chronologically and in full, the public trading journals of several Australian intraday traders. Thousands of posts, screenshots of order books, trade reviews, monthly dashboards, rants, confessions, and the occasional lucky trade they openly admitted they didn't deserve. These were people trading the ASX for a living or working towards it, at very different stages: one at the start of the journey, one grinding through the middle of it, one well past the point most people ever reach.

What struck me was not how different they were. It was how often they arrived, independently, at the same handful of ideas. And almost none of those ideas live on a chart.

This post is the hub for a series built around those shared ideas.

Why a series, and why these rules

I'm not going to name anyone, quote anyone, or retell anyone's story. These journals were written in public, but they were written for accountability, not to become somebody else's blog material. So the series follows a simple rule:

A technique only makes it into a post if it showed up in the journals of at least two different traders.

That filter turned out to be useful for more than privacy. A trick that only one trader uses might be a personality quirk or a lucky regime. A principle that keeps reappearing across people with different styles, account sizes and timeframes is much more likely to be structural: something about how the ASX itself works.

Every number in the series is either from our own market data, a labelled synthetic example, or a composite. Every example ticker situation is illustrative.

What kept showing up

Here's a compressed version of the overlap. Each row became one or more posts.

The roadmap

The series runs in four tracks plus a closing set of posts about traders themselves. Start anywhere: each post stands on its own, and links to the next.

Who this is for

If you've traded the ASX for a while and you're stuck on charts, indicators and "it should have worked," this series is aimed squarely at you. If you're brand new, read Track 3 first. It will save you money.

If you build systems, as we do at tyolab, the order book craft is surprisingly codifiable. That's partly why I'm writing this: the heuristics these traders apply by eye in a few seconds are exactly the kind of thing we can measure, backtest and either keep or throw away. It fits the way I already think about indicators, strategies and alpha and about a trading system in three layers.