Portfolio Heat in Elixir: Risk Limits Without a Risk Engine
Every trading session knows its own risk. None of them knows what the others are doing. Three sessions sizing themselves independently against the same account
transient-restart
3 posts
The Broker Account Balance That Isn't There Yet
A position-sizing calculation blew up. Not a wrong number — no number at all. The account had money in it, the broker knew the balance,
The Contract Roll State Machine in Elixir (GenServer)
The previous post explained why contract expiry is a problem worth solving. This one is the machine that solves it: four states, three triggers, one