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How accurately can complex option trades be signed? First grading against exchange truth

To build a dealer book from the options tape you must decide, print by print, who bought. For simple orders the quote rule does that. But on the day…

A Million Kakapos

Designing a Discount-Validation API: Catching Stacked-Coupon Math Errors Before They Hit Production

If you've ever wired up a promo engine, you know the cheap-looking line items are where the bugs hide. A single product with three sequential percen…

We open-sourced 449 real equipment financing quotes so nobody has to trust our math

We open-sourced 449 real equipment financing quotes so nobody has to trust our math Commercial equipment financing sites are almost always a black b…

How late is Form 4 'real-time' data? Measuring filing delay on 11,241 insider filings

If you backtest anything involving insider trades, there's a quiet bug waiting for you: Form 4 data is timestamped twice . Every filing carries a tr…

I built a free dividend calculator suite (no signup, open-source math)

Every "free" dividend calculator I tried wanted an email, a signup, or a trial. The math behind all of them is public — yield, payout ratio, reinves…

Tipping on a Pre-Tax vs Post-Tax Base: A Reference Sheet for Engineers Who Build the Math

If you have ever wired up a "calculator widget" in a checkout flow, expense module, or hospitality backend, you have probably discovered that the bo…

AI Capex Has Moved Into Credit's Jurisdiction

There are two honest ways to talk about the AI infrastructure boom. One starts with demand. Model usage is rising, enterprise budgets are moving fro…

I found a $45 billion number that vanished from NVIDIA's SEC filings

Liquid syntax error: 'raw' tag was never closed

LAB now ships a free Idea Feed: rule-shaped trading ideas, deliberately untested

A small release, not a launch. The LAB tab on gex.live has a new rightmost rail called IDEA FEED . It is a stream of short, rule-shaped trading idea…

Finding the One: Moving Averages and RSI Indicators – A Neo’s Guide

The Quest Begins (The “Why”) Honestly, I was staring at a candlestick chart at 2 a.m., coffee gone cold, wondering why my “gut feeling” trades kept…

FlashAlpha vs Bloomberg Terminal 2026 - Options Analytics for Quants

Originally published at flashalpha.com . If you are comparing these two, you are probably not choosing between them. Most desks that run FlashAlpha…

Plain Text Accounting is Pretty Cool

Point-in-Time Fundamentals for Numerai Signals: Killing Lookahead in Your Feature Join

If you build features for Numerai Signals from fundamentals, the single most common way to silently overstate your live performance is joining on th…

Actual Budget

A 36% margin became 6% at month-end, and nothing was posted wrong

I built a small manufacturing company end-to-end inside an SAP S/4HANA sandbox — one plant, one product, one month — specifically to watch what the…

Claude as a trading agent: what does the LLM actually add over a plain script?

This came up in Chinese AI developer communities this week, and the numbers are almost beside the point. A physics researcher (no CS background, no…

Moving Averages & RSI: Becoming The One in Technical Analysis

The Quest Begins (The “Why”) Honestly, I used to stare at candlestick charts feeling like I was trying to read ancient runes. I’d spot a sudden spik…

Neo's Guide: Real-Time Market Data Integration with Trading APIs

The Quest Begins (The "Why") Honestly, I was stuck in a loop that felt like watching paint dry. I’d built a little dashboard that showed stock price…

6 Best Stock Market MCP Servers in 2026: Real-Time & SEC Data

Most lists of stock market MCP servers quietly compare price feeds. That is useful if an agent only needs a quote. It is not enough when the questio…

Modeling SCHD's dividend growth, in TypeScript

SCHD (Schwab's U.S. Dividend Equity ETF) shows up on every "best dividend ETF" list, but rarely for the reason that actually matters: its dividend g…

How to Build a Stock Market Trading Bot in Python: Channeling Your Inner Neo

The Quest Begins (The "Why") Honestly, I was tired of staring at candlestick charts while my coffee went cold. I kept thinking, “What if I could aut…

The Matrix of Machine Learning for Stock Prediction: Separating Hype from Reality

The Quest Begins (The "Why") Hey friend, picture this: you’re scrolling through a finance forum at 2 a.m., eyes glazed over candlestick charts, and…

I open-sourced the math behind my dividend calculator

When I built a free dividend payout calculator , the interesting part wasn't the UI — it was the math. Dividend yield, payout ratio, and especially…

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 econo…

Track Any Company's Material Events Straight From SEC 8-K Filings

When a US public company does something that matters — closes an acquisition, loses a CFO, gets delisted, discloses a cybersecurity breach — it has…

Build a Finance Tracker App with Python and SQLite

Build a Finance Tracker App with Python and SQLite tags: python, finance, sqlite, tutorial tags: python, finance, sqlite, tutorial Build a Finance T…

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 sym…

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…

I built a PDF table checker that verifies arithmetic in any PDF without a template

The problem I kept running into: a financial report where a subtotal on page 8 is wrong, but nobody spots it until the numbers get aggregated into a…