Most people read a sell-through report the way they read a weather report. Interesting, mostly out of their hands, a summary of what already happened. A trader reads the same numbers the way they read a market: as a set of positions, each one telling them to add, hold, or cut this week. The difference is not the data. It is what you do the moment you finish reading.
A sell-through report is not a scorecard for the season so far. It is a live position sheet. Every line is a style, a size, or a door that is either pacing ahead of plan, in line with it, or behind it, and each of those three states is an instruction. Ahead means you are short and should chase supply. Behind means you are long and should manage the exit. In line means leave it alone and spend your attention elsewhere. Read that way, the report stops being history and starts being a to-do list.
This post is about the reading itself: which cuts of the data actually carry information, what each state is telling you to do, and how to get to the action without drowning in the numbers that do not matter.
Rate versus plan is the only headline that matters
Absolute units sold tell you nothing until you know what they were supposed to be.
The first mistake is reading absolute numbers. A style that sold 400 units looks great next to one that sold 90, until you learn the first was planned for 800 and the second for 60. Sold units on their own are a trap, because they conflate how much you bought with how well it is selling. The only reading that carries a decision is rate against plan: is this style clearing faster or slower than the pace it needs to hit its target inside its window.
Rate against plan turns every line into one of three positions. Well ahead of plan and you have underbought a winner, so the action is to chase: reorder if the lead time allows, pull forward, protect the size availability. Well behind and you have a developing residual, so the action is to manage the exit before it gets expensive. In line and there is no decision to make, which is just as valuable, because it tells you where not to spend your attention this week.
Plan is the word that makes the reading work, and it is where a lot of reports fall down. If the plan is a single season-total target with no weekly shape, then rate against plan is almost meaningless early on, because you cannot tell a slow start that will build from a fast start that will fade. The plan has to have a curve: how much of this style should have sold by week two, by week four, by week six. Read against that curve, a style is either ahead of pace or behind it at every point in the season, and that is the reading that lets you act in week two instead of waiting for the total to resolve.
The average line is lying to you, so cut it
A style at plan overall can be a stockout and a pile-up hiding inside one number.
The style-level line is where reports go to hide the truth. A style sitting comfortably at plan can be two failures cancelling out: the medium sold out in week two and is losing you full-price sales, while the extra-large has not moved and is heading for markdown. The blended line reads healthy. The reality underneath is a stockout and an overstock in the same style, and both are actionable, and neither is visible until you cut the number by size.
The same is true by door. A style at plan nationally can be flying in the flagship and dead in three outlets, which means the answer is not to reorder and not to mark down but to move the units from the doors that are long to the doors that are short. Every reading that matters lives one level below the summary. Rate versus plan by size and by door is where the report tells you what to actually do. The top line just tells you whether to look closer.
A trader would never accept a blended position. They would want to know their exposure by instrument, by counterparty, by maturity, because a portfolio that nets to flat can be enormous risk on both sides cancelling out. A style at plan is the same trap: it can be a large short in mediums and a large long in extra-larges netting to a comfortable-looking zero, and both halves of that are money you are actively losing. The instinct to trust the net is the single most expensive habit in reading a sell-through report, because the net is exactly where the offsetting failures hide.
size-level availability leaders hold per door by reading the report at size and door level and acting weekly, versus the mid-eighties a top-line read leaves you with.
That number comes entirely from reading below the average. The units to hit 96 were already bought. The difference is catching the medium selling out in one door while it sits in another, and moving it, which you can only do if you read the report at the level where that shows up.
The information is below the top line
Share of actionable signals that only appear when you cut sell-through by size and by door, not at the style level.
Turn the read into three actions and skip the rest
Chase the winners, exit the laggards, move the imbalances, ignore the middle.
A trader does not act on every position every day. They act on the ones that moved. The weekly sell-through read should collapse to the same short list: the styles now well ahead of plan that need a chase, the ones now well behind that need an exit decision, and the size or door imbalances that need a transfer. Everything sitting in line with plan gets no action and no meeting, which is what keeps the list short enough to actually work through.
This is where the platform earns its place. It reads sell-through against plan continuously, at size and door level, and surfaces only the lines that crossed into a decision this week, with the rate, the plan, and the runway attached so the reason is visible. The planner is not handed a thousand-row export to squint at. They are handed the chase list, the exit list, and the transfer list, and they clear it in one pass instead of reconstructing it by hand every Monday.
A report you only read is a cost. A report you trade on is the cheapest edge you have, because every signal in it was paid for by inventory you already own.
The last habit to unlearn is reading the whole report. A trader does not scan every position on the exchange every morning, and a planner should not read every line of a sell-through export. The goal of reading well is to read less: to get to the short list of lines that crossed into a decision this week and stop. If you find yourself scrolling a thousand rows looking for something to worry about, you are reading the report as a document instead of as a signal, and you will either miss the lines that mattered or exhaust yourself on the ones that did not. The best readers of a sell-through report look at very little of it, because the discipline of rate against plan has already told them which handful of lines to open.
The data in your sell-through report is not the problem. The problem is reading it as a summary of the past instead of a set of positions for the week. Cut it by rate against plan, by size, by door. Turn each line into chase, exit, or move. Ignore the middle. Do that every week and the report stops describing your season and starts steering it.