David Duncan's Personal Blog

The Finviz Elite export API is powerful but undocumented — column IDs are bare integers with no spec. Here’s how a JSON Schema catalog solves that and powers a pre-market gap scanner that feeds a daily trading game plan.

I am open-sourcing falcon-stats — a complete trading discipline system built on Daniel Miessler‘s PAI framework. It ingests your DAS Trader data, calculates statistical covariance, scores your discipline, and tells you the truth about your trading. Here is why I built it and how you can use it.

Exploring how to build a Cumulative Volume Delta indicator and compact order flow visualization using IBKR tick data, Python, and modern charting libraries — with Claude as a development partner.