So You Want to Be a Day Trader?
David MartinObservations on intraday market behaviour, structure, and context — explored through data, not prediction.
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sywbdt.substack.comLatest Issues
Oil Spikes, S&P Falls: What Happens Over the Next Three Days? | 9 Oct 2026
Brent traded almost $5 above its open overnight while the S&P 500 closed 34 points lower. After the 32 previous days like this, the S&P traded at least 50 points above the next day's global session open within three trading days in 28 cases...
Mosaic Market Research Note #18
Yesterday’s move in oil prompted a fairly simple question.
Brent traded more than $4.50 above its session open at the intraday high. Once that has happened, what has the S&P 500 done from the following day’s open?
This study adds a second...
Thursday Morning Briefing: Bitcoin, Gold and the ASX Opening Test
Good morning, trader.
Bitcoin and gold fell together yesterday, while the Australian futures market held up better than the typical move seen in that combination. Bitcoin’s completed daily move was −$2,224 and gold’s prior-day change was −...
Bitcoin and Gold Fall Together: Does the ASX First Hour Follow? | 8 Oct 2026
Bitcoin fell more than $2,200 and gold $56 an ounce yesterday, and Australian futures went down with them. After the 23 previous days like this, futures were typically 74 points below the prior ASX close before the open. This morning they w...
Wednesday Morning Briefing: A Global Rally, but When Did the Move Happen?
All three indices gained more than 50 points; history separates the overnight lift from the Australian cash session.
Morning summary
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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.trade, an intraday data and AI platform for serious traders.
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