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Working notes on order flow, market microstructure and building the terminal. No signals, no equity curves, no course upsell.
Many feeds reuse one message type for volume and VWAP updates. Counting those as trades inflates volume and quietly drifts delta all session. Where the filtering has to happen, and how to test whether your platform does it.
A streak that ends the moment price arrives is not a failed defence — it is a level that was never going to be filled. Telling a spoof from real absorption, with both drawn side by side.
A 200-contract order and forty 5-contract orders both total 200. They behave nothing alike. Why the split matters more than the sum, and what it looks like when a single order is doing the work.
The one-standard-deviation figure is 68%. The 70% you see everywhere is a rounding that stuck. A short history, and whether the difference ever changes a read.
Before any strategy, a trailing drawdown imposes arithmetic on position sizing. Working through what a funded account can and cannot survive, with the numbers.
A backtest on range bars can show an edge that vanishes entirely on time bars. Why the bar construction creates the signal, and how to catch it before you trade it.
A heatmap that hides thin liquidity is telling you there are no resting orders there, which is false. Response curves versus cut-offs, and what each one costs you.
Heavy sell aggression into a level that holds means someone passive is taking the other side. Reading the delta profile against the volume profile to tell them apart.
Which panels earn their screen space, what to put where, and how to save it as a workspace you can restore in one click.
A wrong-side trailing stop once produced a 100% win rate over 18,980 trades. What a large parameter search actually surfaces, and how to tell an edge from a defect.
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