Assortment Optimization That Fills Your Most Profitable Gaps
Trusted by the best digital brands
Assortment planning without competitive data is just guessing
Gaps you can't see
Competitors carry products your shoppers are actively searching for, and you don't know until share starts moving.
Volume without context
Your sell-through data tells you what sold. It doesn't tell you what should have sold if you'd had it on shelf.
Slow to react
By the time a trend shows up in your sell-in data, the category leader already locked up the brand.
Decisions built on gut
Without cross-market demand signals, category reviews are driven by supplier relationships and last season's data- not shopper intent.
Assortment intelligence built for every gap in your category
Category Gaps
See exactly what's missing, and what it's worth
Surface every product gap in your category, ranked by the traffic share opportunity it represents. Know not just what you're not carrying, but how much it's costing you - so you can close the highest-value gaps first.
Brand Analysis
Know which brands belong in your assortment
See which brands are driving shopper demand in your category and compare their performance across channels. Identify fast-growing brands you're not yet stocking- before a competitor locks them in.
Most Searched Products
Spot the next winning product before your competitors do
Track which products are gaining search share and purchase momentum across the market. Get ahead of on-site category shifts and stock trending items while there's still first-mover advantage.
Seller Analysis
Understand who's winning, and where the gaps are
See which sellers are carrying the products shoppers want most. Identify coverage gaps in your marketplace or channel, spot where 3P sellers are filling demand you should own, and build the case for assortment adjustments that put you back in control.
Assortment management tools built for every team
Category Managers
Build a category assortment that's always aligned to where demand is heading- not where it's been.
Category Managers
Identify revenue-weighted product gaps vs. direct competitors- Track which brands are gaining demand share in your category
- Benchmark your assortment breadth against top-performing retailers
- Monitor trending search terms to anticipate what shoppers will want next
Buyers & Merchandisers
Make every vendor negotiation and buy decision with competitive market context behind it.
Buyers & Merchandisers
- Quantify the revenue impact of each assortment gap before the buy
- Identify which new brands are generating the most shopper interest
- Compare competitor product mixes to find white space in your assortment
- Prioritize investments based on demand signals, not just historical sell-through
Brand Managers
Ensure your products have the right shelf presence- across every retailer that matters.
Brand Managers
- See which of your products are missing from key retail partners
- Identify retailers where competitor brands have coverage you don't
- Monitor which product categories within your brand are under-indexed by channel
- Use demand data to build the business case for expanded placement
Ecommerce Analysts
Build the intelligence layer that turns assortment decisions from guesswork into a repeatable system.
Ecommerce Analysts
- Access cross-retailer demand data to identify category-level assortment trends
- Combine search share, click share, and product gap data in a single view
- Track how assortment changes correlate with category share shifts over time
- Export and model assortment gap data for forecasting and planning workflows
Assortment optimization backed by best in class data
Why Fortune 500 brands choose us
- Identify assortment gaps ranked by revenue opportunity - not just product lists
- See which brands and products are driving shopper demand across 650+ retailers
- Spot emerging category trends before they show up in your sell-through data
- Benchmark your assortment against competitors using real shopper behavior- not scraping estimates
- Build data-backed business cases for vendor negotiations and buyer meetings
- Combine demand intelligence with execution monitoring in a single platform
More Retail Intelligence use cases and features
Gain visibility into retailer performance, traffic trends and shopper behavior to guide smarter retail and partnership decisions.
Track competitor pricing and promotions to protect your margins and stay competitive.
Track daily Amazon price changes, monitor Buy Box ownership, and view price history for any product
Identify demand trends, competitive gaps and opportunities to increase visibility and sales across online marketplaces.
Master marketplace visibility with data-driven insights into shopper search behavior, keyword performance, and competitive positioning across Amazon and other marketplaces.
Monitor availability, pricing, content and rankings across retailers using real shopper demand data.
Improve Amazon store performance by understanding shopper journeys, content effectiveness and traffic-driving opportunities.
Discover impactful Amazon keywords using AI-driven insights to prioritize optimization and spot any missed keyword opportunities.
Understand who your shoppers are, how they behave and what influences their decisions across digital channels.
Track shifts in consumer demand to forecast trends, evaluate product potential and identify emerging opportunities early.
Analyze how shoppers discover, research and purchase products to optimize experiences across the entire buying journey.
Optimize assortment, pricing and share within your category using real purchase and demand data.
Track sales performance, pricing and trends on Amazon to see how products perform over time.
"We rely on Similarweb's Retail Intelligence to drive strategic growth for our customers, especially when it comes to uncovering category whitespace and new growth opportunities across the marketplace. The data is a key part of our monthly and quarterly customer market reports."
Chris Purcell
Founder, Nexus Brand Group
“Similarweb's Retail Intelligence acts as our lighthouse. It gives us the clarity to see category shifts across brands, on-site search consumer behavior, and competitor dynamics - all in one view.”
Ben Kaminski
Co-Founder & Chairman | Essor
"What's unique about Similarweb Retail Intelligence is the sheet amount of data it provides, and how we can easily move from a brand level down to the product level."
Jason Molina
General Manager, eCommerce & Marketplaces
"With the help of Similarweb Retail Intelligence, we can now give a consolidated view of our entire market, and see how our investment is impacting our market share."
Daniel Zampini
Senior eCommerce Manager
“Similarweb data was the only source of data we used to create our keyword strategy for media agencies along with understanding shopper behaviour at category level”.
Sofia Piana
Digital Excellence Manager, Danone
FAQs
Assortment optimization is the process of deciding which products to carry- and in what mix- to best meet shopper demand while maximizing revenue and margin. It goes beyond assortment planning by continuously using real market data to identify gaps, track trends, and adjust product selection based on how demand is actually shifting across the competitive landscape.
Similarweb's Retail Intelligence identifies every product gap in your category and ranks each gap by the revenue it represents. Rather than relying on internal sell-through data alone, you can see what shoppers are actively searching for and buying across over 650 retailers - so every assortment decision is grounded in real demand signals, not guesswork.
Traditional assortment planning tools are built around internal data- your sell-through history, supplier relationships, and buy plans. Similarweb adds the external layer: what's actually driving demand across the market, which brands and products are gaining share with shoppers, and where your competitors have coverage you don't. It's the intelligence that turns planning into a competitive advantage.
Similarweb identifies assortment gaps by comparing what shoppers are searching for and purchasing across the competitive market against what you currently carry. Each gap is then ranked by the revenue opportunity it represents- giving you a prioritized action list, not just a data dump.
Yes. Similarweb benchmarks your assortment against competitors across 650+ retailers globally. You can see which brands and products they carry, how those products perform in terms of shopper demand, and where the most valuable gaps in your own assortment are relative to the market.
Similarweb crawls retailer and marketplace data continuously- from daily to multiple times per hour depending on the use case and retailer. This means your assortment intelligence reflects current market conditions, not data that's weeks old by the time it reaches your category review
Both. Retailers use Similarweb Assortment Intelligence to identify which products and brands belong in their assortment based on shopper demand- so they can close gaps vs. Amazon and specialty competitors. Brands use it to see which retailers are missing their products and build data-backed cases for expanded placement. Amazon IQ provides additional depth for brands focused on the Amazon channel specifically.
