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Charting the Rubicon

Rubi Sharpe, Jack Bowman

Claude runs my stock portfolio, I make chart packs, speculate on economics and elections, and know that data is plural.

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Substack
PricingOnly free issuesPublishesWeekly
Issues10Founded3 months agoLast Issue10 days ago
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Latest Issues

Claude Fable Added IBKR to My Portfolio

Welcome to CtR.

I’m Rubi, a chartist and professional trader.

Since gaining access to Anthropic’s Fable 5 model, I have decided to see how good it actually is at asset management.

What came of that curiosity turned into an experiment tur...

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Synthetic Capital: A Stock Portfolio Claude Fable Runs Alone

Welcome to CtR.

I’m Rubi, a chartist and professional trader.

Since gaining access to Anthropic’s Fable 5 model, I have decided to see how good it actually is at asset management.

What came of that curiosity turned into an experiment tur...

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The Brazilian Election is Mispriced

Welcome to CtR.

I’m Rubi, a chartist and professional trader.

This issue is on the 2026 Brazilian election.

The flow of the article is charts → commentary → trade idea

As always, feel free to repost these charts with attribution.

    • *...
18 days ago
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RE: Hormuzian Oil; CtR Trading Log

Welcome to CtR.

I’m Rubi, a chartist and trader.

This is an update to a previous post regarding a trade.

This was sent on 6/20/26; it is required before proceeding.

In that post, my co-author, , and I discuss the data behind my convicti...

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Hormuzian Oil Flows Are Mispriced

Welcome to CtR.

I’m Rubi, a chartist and trader.

This issue is on the the Global Oil Situation.

It is accompanied by my co-author Jack Bowman’s commentary appended with annotation. He is an economist and a scholar of markets and macro an...

a month ago
117
2

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Authors

The writers behind this newsletter.

  • Rubi Sharpe

    Prediction markets newsjacking, making cool charts, writing about Polymarket, economics, AI, and markets.

  • Jack Bowman

    Financial Market Intelligence | Writes the Macro Obsession | Strategizer @ PiTrade | Top ​5% of TipRanks Experts | Followed by 10K+ Investors | jackbowman.link

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