You are chasing newness and starving the range that pays the rent
Walk into most merchandising reviews and count the minutes. The new range gets the deck, the samples on the table, the argument about the drop calendar. Continuity, the core that has sold every season for years, gets a line in a spreadsheet and a shrug. It is treated as solved, because it keeps selling whether anyone pays attention or not.
That is exactly the mistake. The parts of the range nobody argues about are the parts funding the business. Continuity is the tee that reorders itself, the five-pocket that never goes out of style, the accessory that shows up in half the baskets. It carries the highest full-price sell-through and the lowest markdown risk in the whole assortment, and it is the piece brands consistently under-buy while pouring open-to-buy into newness that has never sold a single unit.
The split between continuity and newness is the single biggest allocation decision a brand makes each season, and most brands make it backwards, on instinct, in a room, without a number underneath it.
Newness gets the attention because it is the interesting problem
Continuity is boring, predictable, and where the money actually is.
There is a reason merchants over-index on newness. It is the part of the job that feels like the job. Newness is where the taste, the trend read, the point of view lives. It is what the brand shows the press and what the buyer gets credit for spotting. Continuity is a maintenance task. Nobody builds a reputation reordering the same crew-neck for the ninth season running.
So the meeting spends its energy where the energy is fun to spend, and the core gets sized by carrying forward last year's plan with a small bump. But last year's plan was already a guess, and the bump is a guess on top of a guess. Nobody re-derives what the core actually deserves from demand, because the core is not the thing anyone came to argue about.
Meanwhile the newness gets the depth. A brand that should run its core at sixty percent of the buy and its newness at forty will quietly drift the other way, because every individual newness bet is easy to justify in isolation and the core has no advocate in the room. Add up forty small, defensible over-investments in unproven styles and you have starved the part of the range that was going to pay the rent.
The incentives make it worse. A merchant who champions a new range that hits gets remembered for it. A merchant who quietly reordered the core at the right depth gets remembered for nothing, because the core selling through is treated as the natural state of the world rather than a decision someone made. So the rewarded behavior is to bet on newness and the invisible behavior is to fund the core, and people respond to incentives. The org rewards the loud half of the buy and takes the quiet half for granted, and the buy drifts accordingly, season after season, until the core is chronically thin and nobody can say when that happened.
full-price sell-through leaders hold, versus 57% for everyone else, a 14-point gap driven largely by getting the continuity-to-newness split right before the season starts.
That gap is not a taste gap. Leaders do not have better trend instincts than everyone else. They have a core they sized correctly, so it clears at full price and funds the newness, and they buy the newness lean enough that the misses clear without dragging the season into a promotional hole.
Continuity is measurable, so measure it
The core has years of history. Use it instead of eyeballing it.
Here is the part that should be obvious and somehow never is: continuity is the most forecastable inventory you will ever hold. It has seasons of history at the style, size and channel level. Its demand curve is stable. Its size profile barely moves. There is no reason to size the core by instinct when the core is the one thing you can forecast with real confidence.
Work an example. Take a men's core crew-neck tee that has sold roughly 40,000 units a year for three seasons, split 30 percent small, 40 percent medium, 20 percent large, 10 percent extra-large, with 96 percent full-price sell-through and almost no markdown. That is not a bet. That is an annuity. The right question is not whether to reorder it. It is how deep to run it so it never stocks out in the medium and never sits in the extra-large, and the history answers that question precisely.
Now take a new statement jacket with no history. The honest forecast is a wide range, not a point. Maybe it does 8,000 units, maybe 2,000, and you will not know until it is in market for three weeks. The correct response to that uncertainty is to buy it lean, test it, and chase the winners in-season, because you can reorder the core with total confidence but you cannot un-buy a jacket that flopped.
The split writes itself once you look at it this way. The continuity gets depth because the demand is proven and the downside is nearly zero. The newness gets breadth, not depth, because the upside is real but the downside is markdown. Brands invert this because newness is louder, and they pay for it at the clearance rack.
There is a second reason to fund the core first, and it is about cash flow, not taste. The core clears at full price and turns fast, so the money you put into it comes back quickly and clean, ready to redeploy. The money you put into unproven newness comes back slowly if it comes back at all, and a chunk of it comes back as markdown. Fund the core deep and you have a self-refilling well; over-fund the newness and you have cash locked in stock you are hoping to clear. The split is not just a margin decision. It is a liquidity decision, and treating it as a taste argument in a room is how brands end up asset-rich in the wrong assets and short on the cash for next season's buy.
The split most brands run, versus the one demand supports
The typical buy over-weights unproven newness and starves a core it could forecast with confidence. Sized from demand, the weight flips.
Eighteen points of the buy sitting in unproven newness that should have gone to a forecastable core is a lot of margin to risk on instinct. It is the difference between a season that funds itself and one that limps to markdown hoping the new stuff catches.
Size the split from demand, then defend it
The core earns its depth. The newness earns its shot. Let the numbers decide which is which.
The fix is to stop treating the continuity-versus-newness split as a taste decision and start treating it as a planning decision with a number underneath it. Continuity gets forecast at the style, size and channel level from its own history, with the depth set so availability holds at ninety-plus percent all season. That is what pays the rent, so it gets funded first, off a forecast you can actually trust.
Newness gets sized as a portfolio of tests, not a set of convictions. Each new style inherits a size curve from its nearest historical cluster so it launches with a real curve instead of the category average, and each one is bought lean enough that a miss clears cleanly and a hit can be chased in-season while the demand signal is live. The agent stages the reorders on the core and the chase orders on the newness that is pulling, and the merchant approves the set in one pass.
Newness is where the brand gets interesting. Continuity is where it gets paid. Fund the second one first, then go have fun with the first.
Do this and the split stops being an argument. The core is sized to what it has always sold, the newness is sized to what it might, and the difference between a self-funding season and a promotional one comes down to which of those two you fed first.