Market analysis, product updates, and trading strategies from the Blockcircle team.

The day that hurts is not the day a strategy is wrong, it is the day every strategy fires at once. Size the trade count cap and the notional cap off the worst cluster day in the backtest, before it happens.
Most backtests fill the instant a signal prints, which no retail account can actually do. Re-run the strategy with real delays and watch how fast the edge decays.

An index spread is an average, and averages hide what separates a funding repricing from a change in default expectations. Here is how to build the quality dispersion series and fold it in without double counting.

A class is a repeatable combination of ticker, timeframe, direction and type, not a ticker you like. The survival test a class has to pass before it goes near autopilot, and the three that never should.

The reservation of rights paragraph appears in nearly every long form filing and carries no information. Everything above it can be coded, and the coded field belongs to your desk rather than to a screen.

The sector panel has no biotech row, and on the day I captured it Healthcare was third by transaction count and fourth by dollars. What that bucket is really made of, and the one purchase pattern still worth reading.