ARUNA Decor: A 641% Return and the Portfolio’s Best ACoS Swing

Every portfolio has a standout — the account where the numbers line up so cleanly they almost look designed. For SellerGeni, that account is ARUNA Decor, an Indian home-decor brand that connected in June 2024. ARUNA holds two portfolio records at once: the highest ROI on incremental ad spend at 641%, and the best ACoS swing of any brand under management. It is the clearest illustration we have of what automation looks like when it is working exactly as intended.

A 641% return means that for every unit of incremental ad spend, ARUNA got 6.41× back — the original returned, plus 5.41 more on top. Over the same window, sales grew +10% while cost also rose only +10%, and ACoS improved by nearly a quarter — a 24.5% relative reduction, the deepest efficiency gain in the entire portfolio.

The Cleanest Efficiency In The Portfolio

Look closely at the growth and cost figures, because they tell a subtle and important story. Sales grew +10%. Cost grew +10%. On the surface that sounds like standing still — but it is the opposite. It means ARUNA scaled its advertising with perfect proportional efficiency: it bought exactly as much additional growth as it paid for, with zero degradation in the return on each rupee. Most accounts, when they push for growth, watch cost outrun sales. ARUNA held them in lockstep.

And it did more than hold the line — it improved the underlying efficiency at the same time. ACoS fell by nearly a quarter. That 24.5% relative reduction is the best swing across every brand SellerGeni manages. ARUNA was simultaneously the most profitable to scale (641% ROI) and the fastest-improving (best ACoS swing). Those two records reinforce each other: the efficiency gains are exactly what made the incremental spend so profitable.

How The Machine Achieved It

Underneath the clean headline numbers is the same disciplined machinery that drives every automated account — applied, in ARUNA’s case, with unusually good results. Over 275 days on autopilot, the system made 5,917 bid adjustments and, in the early phase, added 164 negative keywords.

• 5,917 bid adjustments. Continuous reallocation of budget toward the placements and search terms that converted, and away from those that did not. This is what kept cost growth perfectly matched to sales growth — every rupee stayed pointed at productive traffic.
• 164 early negative keywords. Front-loading the exclusions matters. By cutting off wasteful search terms early, the account spent its entire remaining lifetime structurally leaner — a big reason ACoS fell as sharply as it did.

The combination is what produced the portfolio-best ACoS swing. Bids kept the money productive; early negatives kept it from leaking. The 641% ROI is simply the financial consequence of doing both well.

ARUNA grew sales and cost at exactly the same +10% rate while cutting ACoS by 24.5% relative — the best swing in the portfolio — and returned 6.41× on incremental spend. This is what “holding margin while scaling” looks like in its purest form.

By The Numbers

Why The Two Records Belong To The Same Account

It is not a coincidence that the brand with the portfolio’s best ACoS swing is also the one with the highest incremental ROI. The two records are causally linked. ROI on incremental spend is, at its core, a measure of how profitably you can deploy each additional rupee — and that profitability depends directly on how efficient the account is when the rupee goes in. ARUNA’s rapidly falling ACoS meant every incremental rupee entered an ever-leaner system, so each one worked harder than the last. The 24.5% efficiency swing is the engine; the 641% return is the output.

This is why chasing ROI and chasing efficiency are not competing strategies but the same strategy viewed from two angles. Automation that drives ACoS down is, by definition, making future spend more profitable. ARUNA is the portfolio’s clearest demonstration that the two metrics rise together when the underlying optimization is disciplined enough.

The Discipline Of Front-Loaded Negatives

ARUNA’s 164 early negative keywords played an outsized role in the record ACoS swing. Home decor, like most visual categories, attracts a wide spread of loosely relevant searches — shoppers describing what they want in dozens of different ways, many of which browse without buying. Cutting off those unproductive terms early meant the account avoided paying for them across its entire 275-day run, rather than discovering and excluding them slowly over months.

That timing is the difference between an account that gradually improves and one that improves sharply. By front-loading the exclusions, ARUNA spent nearly its whole lifetime operating near its efficient frontier, which is exactly why its ACoS fell further and faster than any other brand under management.

What Perfect Proportional Scaling Really Means

It is worth returning to the +10% sales, +10% cost figure one more time, because operators often underrate it. In advertising, the natural tendency as you scale is diminishing returns — each additional rupee of spend tends to buy slightly less growth than the one before, because you exhaust your best keywords first and push into progressively weaker traffic. Cost creeping ahead of sales is the normal, expected pattern. ARUNA broke it: cost and sales advanced at identical rates, meaning the account found new growth without dipping into less productive traffic to get it.

The only way to achieve that is to keep the entire spend pointed at high-intent traffic even as the budget grows — which is exactly what 5,917 continuous bid adjustments accomplished. Every rupee of additional spend was steered toward the placements still converting well, so the account expanded along its efficient frontier rather than sliding down it. Perfect proportional scaling is not luck; it is the visible result of never letting a single bid drift.

The Lesson: Margin And Scale Are Not Enemies

The conventional wisdom is that you can scale or protect your margin, but not both — that growth always demands you let efficiency slip a little. ARUNA is the counter-example that closes the argument. It scaled with perfect cost discipline and improved its efficiency more than any other brand in the portfolio, at the same time.

The reason it could is that automation does not have to choose. A human manager, pushing for growth, will loosen bids and tolerate some waste because watching every rupee across hundreds of decisions is impossible by hand. The system watches every rupee by default. That is why ARUNA holds two portfolio records at once — and why 641% ROI and the best ACoS swing showed up in the very same account.

These results come from disciplined AI-driven optimization. Get a free AI audit of your account.