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Personal finance, investing, and financial literacy.

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Which large US companies grew revenue ten years in a row?

Which large US companies grew revenue ten years in a row?

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5 min read
An IDX/BEI financial panel: 4,408 company-years, 22 columns, and the caveats that matter

An IDX/BEI financial panel: 4,408 company-years, 22 columns, and the caveats that matter

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3 min read
Backtrader vs vectorbt vs Backtesting.py: I Ran the Same Strategy on 10 Years of Data

Backtrader vs vectorbt vs Backtesting.py: I Ran the Same Strategy on 10 Years of Data

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11 min read
Counting words in speech-to-text earnings calls: the "Tranium" problem

Counting words in speech-to-text earnings calls: the "Tranium" problem

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2 min read
Parsing SEC EDGAR Facts: Reconciling Cash Flow with Python

Parsing SEC EDGAR Facts: Reconciling Cash Flow with Python

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4 min read
Why a Double-Entry Ledger Is an Interesting Systems Programming Problem

Why a Double-Entry Ledger Is an Interesting Systems Programming Problem

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3 min read
Three traps when an AI assistant reads insider trades from Form 4s

Three traps when an AI assistant reads insider trades from Form 4s

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3 min read
The VAT maths mistake hiding in almost every invoice tool

The VAT maths mistake hiding in almost every invoice tool

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2 min read
20 Fast SEC EDGAR, FDA Biotech & US B2B Lead Generation JSON APIs for Python, Clay, n8n & MCP AI Agents

20 Fast SEC EDGAR, FDA Biotech & US B2B Lead Generation JSON APIs for Python, Clay, n8n & MCP AI Agents

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6 min read
Everyone Said They'd Skip Claude Finance. Then They Linked

Everyone Said They'd Skip Claude Finance. Then They Linked

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6 min read
How to Write Numbers in Words on Money Orders, Demand Drafts, and Pay Orders

How to Write Numbers in Words on Money Orders, Demand Drafts, and Pay Orders

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2 min read
Three SEC filing feeds as structured data: Form D raises, 13F position changes, and 8-K material events

Three SEC filing feeds as structured data: Form D raises, 13F position changes, and 8-K material events

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3 min read
Revenue reconciliation: a practical operating model for finance and sales

Revenue reconciliation: a practical operating model for finance and sales

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4 min read
Track SEC comment letters for any ticker in 5 minutes (EDGAR UPLOAD/CORRESP, no API key)

Track SEC comment letters for any ticker in 5 minutes (EDGAR UPLOAD/CORRESP, no API key)

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2 min read
Why Most Student Loan Calculators Are Ad Traps (And How to Find a Clean One)

Why Most Student Loan Calculators Are Ad Traps (And How to Find a Clean One)

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2 min read
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