Open levels and taken levels are two different things
Many traders place their stop orders just beyond the high or the low of a session. Those prices attract the market. This tool draws them by itself and shows which have already been reached and which are still open.
Session highs and lows, the previous day and the opening ranges are where the stops sit. Most traders draw them by hand, forget to delete them, and end up with a chart of lines that no longer mean anything.
I wanted to see at a glance where the liquidity of the day sits and which of it has already been taken. An open level and a taken level are two different things, and the chart should show the difference by itself.
The Liquidity Radar draws Asia, London and New York as soft zones, with the high and low of every session and of the previous day, and the opening ranges with high, low and midpoint. An open level runs to the right edge as a solid line until price takes it. A taken level turns dotted, stops at the bar that took it and gets a check.
A level that has not traded since its session closed still has resting orders behind it: stops of those positioned the other way, and breakout orders. It is a likely destination. A level that has been taken is a reference: the business there is done, and what matters is how price left it.
Trading through a level says little by itself. A sweep, a stop run, trades through, finds no follow-through and comes back inside the range. Acceptance holds beyond the level and builds value there. The Radar marks the bar that took the level; the bars after it are the read.
A morning on an index chart. Asia builds a range overnight. London takes the Asia high early and the previous day's high in the same leg, then trends higher through its session. Into the New York open the London high is taken as well.
The panel shows the inventory at that moment. Above, everything from the night has been cleared, and only the high of the New York opening range is still open. Below, the London low, the Asia low and the previous day's low have not traded.
That is what the Radar is for: not a signal, but the state of the map. Which side has been cleaned up, where business is still waiting, and where the session has to prove something.
It runs on futures, for example Micro E-mini Nasdaq-100 (MNQ) on TradingView, and on index, gold and FX CFDs in MetaTrader. All session times are New York time, with daylight saving handled automatically. It reads no order flow and needs no volume: it is a location tool.