Create God and Ask Him for Money
This is obviously a bubble Jim Rickards, a former adviser to the CIA and Pentagon, warns that the United States is currently facing a tectonic economi…
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Building an MCP Server on 31 Million Rows of Financial Data
This is the architecture of Shibui Finance , an MCP server that gives Claude direct SQL access to 64 years of US stock market data. About 10,000 symbo…
AI in fintech: use cases that work in production
Why fintech is a different environment Financial services applications have accuracy and explainability requirements that most other AI contexts do no…
Automate FOMC and CPI Alerts with n8n and a Free Economic Calendar API
If you trade — or just hold anything denominated in dollars — you already know the drill: FOMC decisions, CPI prints, and NFP releases move markets in…
Black-Scholes Explained Simply - With Python Code
Black-Scholes Explained Simply - With Python Code The Black-Scholes model is the foundation of modern option pricing. Published in 1973 by Fischer Bla…
How to Become a Quant in 2026: The Complete Career Guide
How to Become a Quant in 2026: The Complete Career Guide The quantitative finance landscape has shifted dramatically in the past two years. AI models …
How to Build a Point-in-Time Fundamentals Database from SEC EDGAR (and When Not To)
If you backtest with today's fundamentals, you are cheating yourself. The Revenue figure you pull for Q4 2019 was probably restated in 2021, and the r…
Building a Stock Market Trading Bot in Python: My Neo Moment
The Quest Begins (The "Why") Honestly, I was tired of watching my portfolio fluctuate while I stared at candlestick charts like they were hieroglyphic…
Backtesting Trading Strategies: From Theory to Execution – My Quest for the Holy Grail of Profit
The Quest Begins (The "Why") Picture this: I’m sitting at my desk, coffee gone cold, staring at a spreadsheet that looks like something out of Indiana…
📈 The Jedi’s Guide to Building a Python Stock‑Market Trading Bot
(or: How I Turned My Laptop Into a Lightsaber for the Market) The Quest Begins (The “Why”) Ever stared at a blinking cursor at 2 a.m., wishing you cou…
The `epsActual` That Wasn't: 15% of an LLM Backtest's Trades Were Decided on Data That Didn't Exist Yet
We were backtesting an LLM-driven earnings signal against a field called epsActual — the kind of field everyone treats as ground truth. It isn't. Abou…
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 …
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 …