So You Want to Be a Day Trader?
David MartinObservations on intraday market behaviour, structure, and context — explored through data, not prediction.
| Platform |  | Pricing | Freemium | Publishes | Daily |
|---|---|---|---|---|---|
| Issues | 1326 | Founded | 3 years ago | Last Issue | 3 days ago |
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sywbdt.substack.comLatest Issues
Stop Asking 'Why'
Knowing why something happens is nice. It feels productive. It makes for great content. But unless you’ve got a hold time of weeks or months — during which your probability of being right slowly erodes anyway — you’re almost always better o...
When the S&P falls the day before an AUS CPI release, what does the AUS200 tend to do?
**Note: This writeup was originally emailed before yesterday’s’ CPI print. The setup has now finished positive 13/13 occurrences.
What the data shows
On the 12 occasions since 2021 when an ASX CPI day followed an S&P 500 session that fell...
The Internet Doesn't Need Another Trading Newsletter
The last few months have without doubt been some of the most enjoyable and exciting of the last 20 years of my life.
“Learning” to code (ie vibe coding/ no-fucking-idea coding) about 8 hours a day with my best mates (Codex & Claude) on Mo...
A Simple Example of Distribution-Based Trading
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Morning Session 8/5/26
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Authors
The writers behind this newsletter.
Intraday market structure, quantified. I analyse index behaviour across sessions, events, and regimes, turning history into data and probabilities. Founder of Mosaic, an intraday data and AI platform for serious traders.
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