All
Articles 169,198Blog Posts 161,024Tech Tutorials 44,991Research Papers 33,038News 21,554
⚡ AI Lessons
Dev.to · GEX.live
15h ago
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...
Dev.to · GEX.live
1d ago
Does open interest pin the index or widen its range? A decomposition over 1,084 SPX sessions
Two published claims about what option open interest does to the underlying point in opposite...
Dev.to · GEX.live
1d ago
How accurate is the SPX "expected move"? A calibration over 1,088 sessions and 82,000 readings
Every 0DTE dashboard quotes an "expected move" - the one-sigma range to the close implied by ATM...
Dev.to · GEX.live
1d ago
Does 0DTE options trading raise volatility? We measured a published +9% claim on 1,083 SPX sessions
Whether 0DTE options destabilise the index is a live three-way academic dispute. Brogaard, Han and...
Dev.to · GEX.live
1d ago
Is intraday momentum still alive? We measured it on 1,085 SPX sessions of the 0DTE era
Two peer-reviewed papers say the last half hour of the US session continues the day's direction. Gao,...
Dev.to · GEX.live
⚡ AI Lesson
1d ago
We replicated a published 0DTE options paper to four decimals. One unit-scale bug reverses its headline result — confirmed by the author
This is the short version of the full write-up, which carries every table: Replicating Vilkov (2026)...
Dev.to · GEX.live
2d ago
A paywall where the trim is the product
I sell one thing: a live data stream. Everything that has already finished is free, forever, and that...
Dev.to · GEX.live
2d ago
Your MCP server is invisible to ChatGPT unless it has these two tools
My MCP server had nine working tools. Claude used all of them. ChatGPT could list the server and...
Dev.to · GEX.live
2d ago
I measured which AI crawlers actually fetch my site. The answer changed what I built next.
Cloudflare Web Analytics told me chatgpt.com was one of my largest referrers. That is the sum total...
Dev.to · GEX.live
6d ago
How much of the SPX options book is new each day? Open-interest change across 1,081 sessions
Short version of a post on gex.live/research; the full write-up, definitions and reproduce block live...
Dev.to · GEX.live
6d ago
How much of the SPX options tape is dealer-to-dealer? A free daily floor from OCC data
Short version of a post on gex.live/research; the full write-up, caveats and reproduce block live...
Dev.to · GEX.live
6d ago
How far does SPX travel before the close? An empirical touch-probability surface from 1,082 sessions
Originally published on gex.live/research, where the full write-up, the caveats and the reproduce...
Dev.to · GEX.live
1w ago
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...
Dev.to · GEX.live
1w ago
The Lab: a backtester that is allowed to say "no"
gex.live has two halves. The terminal measures where SPX options dealers are positioned, every...
Dev.to · GEX.live
1w ago
We listed gex.live on ~15 directories in a week. Here is what that did and did not do
Build-in-public note, no fireworks. Why bother Search Console in mid-August was blunt: 6...
Dev.to · GEX.live
1w ago
Backtest SPX dealer-gamma rules from your AI assistant
gex.live has an MCP server. Add it to Claude, Cursor, ChatGPT or any MCP client and the assistant can...
Dev.to · GEX.live
1w ago
Three books that disagree: rebuilding an options dealer's position from the tape
Almost every gamma-exposure chart you have seen is built the same way: take yesterday's end-of-day...
DeepCamp AI