The September Overlap: Buying Spring While Autumn Is Still Landing
September is the only month in which a wholesale buyer is asked to do two contradictory things at once. Autumn stock is landing and has to be sold. Spring is being shown and has to be bought. Both draw on the same working capital, and the season that loses is almost always the one whose numbers are least visible at the moment the decision is made.
Begin with what the autumn delivery is telling you, because for the next fortnight it is the only real data you have. The first two weeks of full-price sell-through on a new delivery are the most honest signal a buyer ever receives: nothing is discounted, no promotion is distorting the picture, and the customer is choosing on the product alone. Read it by size curve, not by unit total. A style that empties its M and L in ten days is not a success to repeat as it stands — it is an assortment cut wrong for your customer, and repeating it buys you the same tail of S and XXL a second time.

Then be honest about what a September reorder costs. A reorder placed now on an autumn line arrives with perhaps eight weeks of full-price life in front of it, and that is the generous reading. The unit price on the invoice does not change; the selling window halves. The effective margin is therefore not the one you were quoted. The reorder that works in September is narrow and fast: the two proven styles, in the two sizes that emptied, in the colour that emptied first. The one that fails is the attempt to rebuild the whole range because the range looked good in August.
Spring asks for the opposite discipline. A showroom is designed to be persuasive in the room, and the room is the worst place to judge depth. Commit early to the pieces you are certain of, and leave a deliberate part of the budget unspent — a quarter is a workable figure — for January, when you will know something you cannot possibly know today: how the autumn actually finished. Buyers who spend the whole budget in September are not braver than the ones who hold a quarter back. They have simply moved the decision to the point where they had the least information.

Carry-over deserves more thought than it usually gets. The instinct in late September is to protect cash by discounting the slow autumn styles early. It is usually the wrong instinct: a mark-down in the fifth week teaches the customer to wait, and it spends the full-price weeks you still had. The better lever is placement — move the piece, restyle the window, put it beside something that is selling — and keep the discount for the moment it stops responding to anything else.
Depth is worth more than breadth in a crossover month. Two colours in the right depth outsell five colours in a thin ratio, because a broken size run stops selling long before the stock is gone. This is also the practical case for a pre-order: committing to a piece you already believe in, before it is produced, secures both the depth and the delivery slot, and it places the risk at the part of the decision where you have the most conviction rather than the least.
None of this is a forecast. It is the same discipline every September: read the two weeks you can actually see, buy narrow on what has proved itself, hold budget back for the thing you cannot yet know, and refuse to spend the spring budget on the comfort of a full rail today.