Top 30 Online Stores Where Shoppers Are Creating Carts in 2026

A few words of disclosure on methodology: the rankings in this report are based on aggregated Share-A-Cart usage data from January–March 2026. The dataset includes shopping carts created and shared by Share-A-Cart users (300,000 in total) across supported online retailers worldwide, representing $75M in goods across 8,000,000 individual products. Retailers are ranked by the number of carts shared on each retailer's website during the period analyzed.

Where are shoppers actually spending their time and money online in 2026? To find out, we analyzed cart sharing activity across all Share-A-Cart users from January through March — and the results cut across every corner of ecommerce, from grocery runs to industrial procurement.

Where are Share-A-Cart users creating carts in 2026?

Here are the top 30 for 2026 (so far), ranked by number of carts shared:

Insights

🔎 Key Findings

From the 2026 Share-A-Cart dataset:

• Online marketplaces account for 7 of the top 30 retailers
• 5 of the top 30 are grocery platforms
• Professional purchasing suppliers appear frequently, including industrial, office, and electronics retailers
• 3 of the top retailers are ecommerce platforms (Shopify, Magento, BigCommerce), indicating carts are being shared across independent online stores

🛍 Marketplaces dominate — but not exclusively

7 of the top 30 are online marketplaces:

• Amazon
• AliExpress
• eBay
• Mercado Libre
• Temu
• Shopee
• Etsy

👉 Insight: Global, diverse, cross-border shopping is clearly part of modern cart sharing behavior. Users aren’t just sharing from one ecosystem. They’re shopping globally and across platforms.

🥦 Consumers are buying more groceries online

5 grocery retailers appear:

• Kroger
• Instacart
• Tesco
• Sainsbury’s
• H-E-B

👉 Insight: Consumers continue to get more comfortable with buying groceries online. Monthly online grocery sales have repeatedly set records, with 83+ million households buying groceries online in the U.S. during late 2025 according to Brick Meets Click.

🛒 Big-box retail still matters

• Walmart
• Target
• Sam’s Club

👉 Insight: Even traditional retailers are seeing heavy cart sharing — likely for large purchases, group buys, and event prep. Consumers are also buying increasing amounts of groceries from these stores as well.

🧰 B2B & professional purchasing is significant

Industrial & office suppliers:

• McMaster-Carr
• Grainger
• ULINE
• Staples

Electronics:

• B&H Photo
• DigiKey

👉 Insight: Cart sharing is very popular in business workflows for purchasing teams, schools, nonprofits, production crews, etc., and it’s growing. By 2028, online transactions will account for 75% of all B2B purchasing, according to a Commerce Tools report.

🏬 Storefront platforms are in the Top 30

• Shopify
• Magento
• BigCommerce

👉 Insight: Thousands of independent online stores are built on these platforms. While the giant online marketplaces still hold the largest market share, independents are growing in popularity, and these platforms make it easy to quickly set up a storefront. It’s this adoption of new technology that has enabled these independents to stay competitive, according to Total Retail.

🏠 Home Improvement

• The Home Depot
• Lowe’s
• Wayfair

👉 Insight: DIY projects and renovations often involve multiple decision-makers — which makes cart sharing essential.

The Big Takeaway

The 2026 year-to-date data reveals that cart sharing is not concentrated in any single retail vertical. Instead, it is distributed across a broad cross-section of the online economy.

Of the top 30 retailers:

• 7 are online marketplaces, representing global platforms serving North America, South America, and Asia.
• 5 are grocery retailers or grocery platforms, reflecting the continued normalization of online grocery purchasing in the U.S. and abroad.
• 3 are ecommerce storefront platforms, indicating that carts are being shared across independently operated online stores — not just major national chains.
• Multiple entries fall into industrial supply, electronics distribution, and office supply categories, suggesting meaningful usage in professional and institutional purchasing contexts.
• Big-box retail and home improvement brands also rank prominently, pointing to high-value household and project-based purchases.

Two structural patterns stand out.

First, cart sharing behavior is category-agnostic. It appears in consumer retail, B2B procurement, household coordination, and cross-border commerce alike. This suggests that the act of sharing a cart is not tied to product type but to purchasing workflow — specifically, situations involving coordination, approval, or delegated payment.

Second, the presence of global marketplaces and regional grocery chains in the same top-30 dataset indicates that cart sharing spans both everyday recurring purchases and discretionary or specialty buying.

Taken together, the data suggests that the online shopping cart is increasingly functioning as a collaborative planning tool — not merely a temporary holding space prior to checkout.

As ecommerce continues to expand across grocery, home improvement, industrial supply, and international marketplaces, the need to coordinate purchases before payment appears to be a consistent and growing behavioral pattern.

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We’ll continue to update these data as the year progresses. In the meantime, try Share-A-Cart today!

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