Build a Real-Time Stock Signal Scanner in Python (No Bloomberg Terminal Required)
Most retail traders look at one indicator at a time. Professional quant desks look for confluence - multiple signals firing on the same ticker at the …
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Why I Stopped Ignoring Position Size (and What It Taught Me About Stops)
Why I Stopped Ignoring Position Size (and What It Taught Me About Stops) Quick context (why you're writing this) Here's the thing: I spent a whole wee…
QuantConnect Review: Running 2,400 Backtests Without Installing a Single Python Library
Two years, 2,400+ backtests, and one accidentally profitable strategy — here's what actually happens when a developer tries to become a quant. I first…
Alpha Vantage vs Yahoo Finance API: Free Market Data for Side Projects — An Honest Comparison
Eight projects, 600,000 API calls, and one production outage on a Sunday night — here's what you actually get from the two most popular free financial…
Why Your Backtest Is Lying to You: Data Biases That Ruin Equity Research
You built a backtest. It returns 18% annualized over the last decade. The Sharpe is 1.4. The drawdown is acceptable. You're already mentally apartment…
One Open Source Project a Day (No. 59): Claude for Financial Services - Anthropic's Official AI Agent Suite for Finance
Introduction "From watching analysts work to managing the analytical pipeline itself." This is the 59th article in the "One Open Source Project a Day"…
Mitsui & Co. (TSE: 8031): First ¥1 Trillion Profit — And the Stock Is Down 10% From Its Peak
Record earnings. A 9% Berkshire stake. 9x forward earnings. The LNG and iron ore thesis — and the two risks that could break it. Mitsui & Co. did …
[05] When to Pull the Trigger on FIRE — Monte Carlo Says You're Already Free
[05] When to Pull the Trigger on FIRE — Monte Carlo Says You're Already Free This is Part 5 of a 6-part series: Building Investment Systems with Pytho…
[04] The 90/10 Portfolio — Dividend Core + Growth Satellite with a Live Simulator
[04] The 90/10 Portfolio — Dividend Core + Growth Satellite with a Live Simulator This is Part 4 of a 6-part series: Building Investment Systems with …
[03] Designing a Personal Commitment Line — Two Loans, One Defense System
[03] Designing a Personal Commitment Line — Two Loans, One Defense System This is Part 3 of a 6-part series: Building Investment Systems with Python T…
[02] Stress Testing Your Life — What Happens at -30%, -50%, -60%?
[02] Stress Testing Your Life — What Happens at -30%, -50%, -60%? This is Part 2 of a 6-part series: Building Investment Systems with Python Banks Do …