Inventory Growing Faster Than Sales: The Warning, Scored
By Chad Hartman
Published · Last updated
Carvana's Inventory Net hit $3.1 Billion by the end of fiscal 2021, up 204% year-over-year against 129.4% revenue growth. Three months after that filing, the stock was down 69.6%. That's the largest inventory build in dollar terms in a screen built around one question: when a company's inventory grows meaningfully faster than its sales, does the filing data show it coming?
This ranking draws on GeminIQ's as-filed database: 8,574 quarterly filings across 171 companies in inventory-carrying retail and apparel sectors, filed between April 2011 and August 2026, ranked by the spread between year-over-year Inventory Growth and GeminIQ's pre-calculated Net Revenue TTM Growth 1Y, joined to each stock's return over the three months after the filing date.
What follows isn't a systematic signal. It's four specific, individually verified cases where the pattern showed up in the filings, presented in order of how far revenue growth was outrun.
| Rank | Company | Inventory Growth (1Y) | Revenue Growth (1Y) | Spread | 3-Month Return After |
|---|---|---|---|---|---|
| 1 | Wayfair | +63.6% | -14.8% | +78.4 pts | -47.2% |
| 2 | VF Corp | +92.4% | +16.5% | +75.9 pts | -38.6% |
| 3 | Carvana | +204.0% | +129.4% | +74.6 pts | -69.6% |
| 4 | Under Armour | +45.9% | +28.5% | +17.4 pts | -8.4% |
The Null Finding: The Spread Alone Is Not a Screen You Can Run
Screened broadly, this spread doesn't predict much. Across 8,574 quarterly filings from 171 companies in inventory-carrying retail and apparel sectors, quarters in the worst quartile of the inventory-to-revenue growth spread returned about the same as their sector's own base rate over the next three months — no meaningful outperformance and no meaningful underperformance. A study reporting that its own screen didn't work is a less satisfying result than a signal, and it is the honest one.
That is why the four companies below were individually selected and verified against public reporting rather than pulled off the top of the ranked screen. They are cases, not output.
Wayfair (W): Building Into a Shrinking Top Line
Wayfair's case is arguably the starkest of the four, because revenue wasn't just decelerating — it was already shrinking. In the quarter ended June 2022, Inventory Growth (1Y) was +63.6% while Net Revenue TTM Growth 1Y was -14.8%, a company still building inventory into demand that had already turned negative. The post-pandemic furniture and home-goods boom had ended, and Wayfair kept stocking shelves for a customer base that wasn't showing up. The stock fell 47.2% over the three months that followed.
VF Corp (VFC): The Vans Problem, Visible in the Filings
VF Corp, the parent of Vans, The North Face, and Timberland, became one of retail's most public inventory reckonings by late 2022 — and the filings showed the imbalance well before the company's own guidance caught up. For the quarter ended June 2022, Inventory Growth (1Y) ran +92.4% against 16.5% revenue growth. Over the following months, VF Corp cut its outlook three times, wrote down its Supreme acquisition, cut its dividend 41%, and its longtime CEO retired. Three months after the filing that first showed the gap, the stock was down 38.6%.
Carvana (CVNA): The Used-Car Pile-Up
Carvana filed the widest inventory build in dollar terms on this list: Inventory Net reached $3.1 Billion for fiscal 2021, up 204% year-over-year, against already-strong 129.4% revenue growth. The company had stocked up on used cars at pandemic-peak prices. When interest rates rose and used-car values fell through 2022, that inventory became a liability, forcing steep write-downs and a cash crunch severe enough that analysts openly discussed bankruptcy risk. Three months after the fiscal 2021 filing, the stock was down 69.6%. Twelve months out, it was down 94.9%.
Under Armour (UAA): The Slow Bleed
Under Armour is the one entry here where the filings told a multi-year story rather than a single sharp break. For fiscal 2015, Inventory Growth (1Y) ran +45.9% against 28.5% revenue growth — a real but comparatively modest gap next to the other three. The stock was down 8.4% three months after that filing and 28.4% a year out, as growth kept decelerating and inventory kept building through 2016 and 2017 before the company fully addressed it. It's the reminder that this pattern doesn't always resolve in a single quarter — sometimes the filings show the problem accumulating for years before the market fully catches up.
The Method
Inventory Growth (1Y) has no pre-built GeminIQ metric. This post computes it directly from the raw Inventory Net balance sheet tag, comparing each filing's balance to the balance from approximately one year earlier — the same convention GeminIQ uses for Deferred Revenue Growth. Revenue growth is GeminIQ's pre-calculated Net Revenue TTM Growth 1Y. The screen is restricted to retail, apparel, and other physical-goods sectors where a real inventory balance exists, with a $1 Million floor on the prior-year balance to exclude divide-by-near-zero artifacts. Full methodology is covered in How GeminIQ Builds Filing Data Studies.
Check Your Holdings
This is a spread you can check directly. Pull up any inventory-carrying position in GeminIQ's Financial Statements view and find Inventory Net on the balance sheet, then compare it to the same line item from four quarters earlier to get its year-over-year change. Check that against the position's Net Revenue TTM Growth 1Y in Calculated Metrics. A gap where inventory is growing meaningfully faster than sales isn't a guaranteed warning sign — the four cases above show it can resolve in one bad quarter or unwind over several years — but it's a gap worth seeing in the filings before it shows up in a headline.
The same as-filed data supports a second check on the other side of the equation — what the market has already paid for the growth. That study is priced for perfection, quantified.
Frequently Asked Questions
Why would a company's inventory grow faster than its sales?
Usually because the buying decision was made against demand that no longer exists by the time the goods arrive. Wayfair kept building stock into a top line that had already turned negative after the post-pandemic home-goods boom ended. Carvana bought used cars at pandemic-peak prices and was still holding them when rates rose and values fell. VF Corp's build showed up in the filings before its own guidance caught up. It is not always a mistake, either — semiconductor companies build ahead of demand as a matter of course, and in this screen those quarters showed no meaningfully worse forward return than the sector's base rate.
How long after an inventory buildup did these stocks decline?
In three of the four cases here the move came quickly: Wayfair was down 47.2%, VF Corp 38.6%, and Carvana 69.6% within three months of the filing that showed the gap. Under Armour is the counterexample — down only 8.4% at three months and 28.4% a year out, with inventory still building through 2016 and 2017. Carvana kept falling too, to -94.9% twelve months on. Across the full screened universe, though, the widest-spread quarters returned about the same as their sector's base rate, so no timing pattern generalizes from these four.
Does inventory growing faster than sales always mean trouble ahead?
No. Screened across the full universe of retail and apparel filings in this study, quarters with the widest inventory-to-revenue growth spread performed about the same as their sector's own base rate over the next three months. The four cases in this post are specific, individually verified examples, not a statistical signal that generalizes.
How is "Inventory Growth (1Y)" calculated if GeminIQ doesn't have a pre-built metric for it?
It's derived directly from the Inventory Net balance sheet tag: the current period's balance compared to the balance from approximately one year earlier, matched by filing date — the same convention GeminIQ uses for its pre-calculated Deferred Revenue Growth metric.
Why isn't there a semiconductor company on this list?
Semiconductor companies build inventory ahead of demand as a matter of course, and in GeminIQ's screen, quarters with the widest inventory-outpacing-revenue spread in that sector showed no meaningfully worse forward return than the sector's own base rate. A build there reads more like confidence than risk, which is a different story than the one this post is telling.
What counts as "inventory-carrying" for this screen?
Retail, apparel, and other physical-goods sectors by SIC code, with a $1 Million floor on the prior-year inventory balance to filter out small or newly-disclosed positions that can produce misleadingly large percentage swings.
Wall Street's data. Main Street's price.
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Data Appendix: Universe of 171 companies in inventory-carrying retail and apparel sectors (by SIC code), drawn from GeminIQ's as-filed 10-K and 10-Q database, publicly available on SEC EDGAR. 8,574 quarterly filings, filed April 2011 through August 2026, were screened for the spread between year-over-year Inventory Growth and GeminIQ's pre-calculated Net Revenue TTM Growth 1Y. Inventory Growth (1Y) is derived from the raw Inventory Net balance sheet tag and is not a GeminIQ platform metric. The screen applies a $1 Million floor on the prior-year inventory balance and bounded growth rates to exclude divide-by-near-zero and distressed-company artifacts. Across the full screened universe, the top quartile by spread showed no meaningful outperformance or underperformance versus the sector base rate over the following three months; the four companies named in this post were individually selected and verified against public reporting, not mechanically ranked by the raw screen. Methodology: How GeminIQ Builds Filing Data Studies.
Disclaimer: The content in this blog is for educational and entertainment purposes only and does not constitute financial, legal, or tax advice. Investing involves risk, including the loss of principal. The views expressed are my own and not intended as financial advice or a guarantee of future performance.