Warn me when two strategies are effectively the same bet
If I'm running multiple strategies, I'd like the app to notice when their positions overlap enough that I'm not diversified, just doubled.
Simplest useful version: show me, over the last N sessions, how often my strategies held the same symbol at the same time, and what fraction of my total exposure was concentrated. No prediction needed — just a measurement of what already happened.
The correlated-risk problem doesn't announce itself until a bad day, and by then the measurement is too late to be useful.
