Amazon and Shopify Now Control 50% of US E-Commerce

Quick Summary

Amazon (35.7%) + Shopify (14%) = 49.7% of US e-commerce, up from ~43% in 2021
Walmart holds 6.4%, Apple 3.6%, eBay 3%. The gap with the duopoly keeps widening
US e-commerce projected to reach 23% of total retail by 2027, making platform choice critical
Sellers relying solely on Amazon face concentration risk. Multi-channel strategy is no longer optional

Nova surfaces every Amazon fee, refund, and margin shift in your live P&L, across 21 marketplaces. See it in your data

What's Happening

Two platforms now control half of all US online commerce. Amazon holds 35.7% of the $1.2 trillion US e-commerce market. Shopify powers 14%, up from 12% in 2024. Together, that's 49.7%. The data comes from Marketplace Pulse's February 2026 analysis. For sellers tracking their performance across this shifting landscape, having the right Amazon analytics tool is no longer optional. The pattern with these announcements: cockpit views show the impact before sellers get the email from Amazon.

In 2021, the combined share was roughly 43%. The gap has grown every year since. Meanwhile, everyone else is losing ground. Walmart sits at 6.4%. Apple at 3.6%. EBay at 3%. The long tail of smaller platforms and DTC sites is shrinking. Understanding your Amazon product catalog performance is critical as the market consolidates around fewer platforms.

This isn't just a market share story. It's a structural shift. For FBA sellers, it means the platform you're on is dominant, but it's not the only game in town. And the second-largest player isn't another marketplace. It's a platform that powers independent brands, now integrating with AI shopping agents like ChatGPT. That changes the competitive dynamic.

Amazon Market Share

35.7%

~$440B of $1.2T US e-commerce

Shopify Market Share

14%

Up from 12% in 2024

Combined Duopoly

49.7%

Up from ~43% in 2021

Key Dates & Deadlines

Feb 13, 2026

Shopify Q4 2025 Earnings

Shopify reports 31% revenue growth, GMV crosses $280B annually. Merchant count surpasses 4 million globally

Feb 20, 2026

Marketplace Pulse Analysis Published

Data confirms Amazon + Shopify = 49.7% of US e-commerce. First time two platforms control half the market

Q2 2026

US E-Commerce Forecast Update

eMarketer projects US e-commerce reaches $1.35T in 2026, with online penetration hitting 22.5% of retail

US E-Commerce Market Share Breakdown

Platform	2024 Share	2026 Share	Trend
Amazon	34.8%	35.7%	↑ Growing
Shopify	12%	14%	↑ Fast growth
Walmart	6.1%	6.4%	↑ Slow growth
Apple	3.8%	3.6%	↓ Declining
eBay	3.2%	3.0%	↓ Declining
All Others	40.1%	37.3%	↓ Shrinking

Source: Marketplace Pulse, Feb 2026. Shopify share includes all merchants using Shopify's commerce infrastructure.

Why This Matters for Amazon Sellers

Concentration Risk Is Real

Amazon controls 35.7% of US e-commerce. That's dominant, but it means 64.3% of online spending happens elsewhere. Sellers who put all their eggs in the Amazon basket face fee increases, policy changes, and algorithm shifts with no fallback. The brands growing fastest in 2026 are the ones selling on Amazon and building a Shopify presence for direct customer relationships. Use Custom Breakdowns to segment your Amazon performance by product line, marketplace, or brand and identify where you're most profitable.

Shopify Brands Are Your New Competitors

Shopify's growth means more DTC brands are building loyal audiences outside Amazon, then using Amazon as an additional channel. They bring brand equity, customer data, and marketing sophistication. If you're competing purely on price and listing optimization, you're fighting with one hand tied behind your back. Track your product performance across metrics that matter.

Amazon Profit Clarity Becomes Essential

As competition intensifies from Shopify brands entering the Amazon marketplace, knowing your exact Amazon margins at the SKU level matters more than ever. Seller Central gives you top-line numbers, but it doesn't show true profitability after fees, ad spend, and returns. Use P&L analytics to understand where your margin actually comes from and where you're leaking money. Our Seller Central guide Covers what Amazon's native tools can and can't tell you.

What You Should Do Now

Action Items for Amazon Sellers

Audit your Amazon dependency. What percentage of your revenue comes from Amazon? If it's above 80%, you're exposed. Start exploring Shopify or Walmart as a second channel.
Study Shopify-native competitors. Search your top keywords on Google. If Shopify stores are ranking alongside Amazon listings, those brands are building audiences Amazon can't touch. Track how your daily performance Compares.
Build a direct customer list. Amazon doesn't give you customer emails. Every sale on Shopify does. Even a small DTC presence gives you a marketing asset Amazon sellers don't have.
Unify your analytics. If you're selling across channels, you need custom reporting that shows Amazon profitability by product line, marketplace, and brand.
Use Amazon's Brand Referral Bonus. Amazon gives you a 10% advertising cost Rebate for driving external traffic to your listings. If you have a Shopify audience, use it to reduce your Amazon ad costs.

Bottom Line

The US e-commerce market is consolidating around two platforms with very different models. Amazon is the marketplace. Shopify powers independent brands. Together they control half of all online spending. For sellers, what this means is clear: Amazon remains the most important channel, but building on a single platform is increasingly risky. The sellers who'll thrive in 2027 are the ones building multi-channel operations today.

Track your Amazon profitability with precision using Nova's P&L analytics, and make sure every product you sell on Amazon is actually contributing to your bottom line.

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Frequently Asked Questions

Common questions about this topic

Amazon controls approximately 35.7% of the $1.2 trillion US e-commerce market in 2026, according to Marketplace Pulse data. Combined with Shopify at 14%, the two platforms account for nearly half of all US online sales.

Diversifying to Shopify or other channels reduces concentration risk. Sellers who rely solely on Amazon face vulnerability to fee increases, policy changes, and algorithm shifts. A multi-channel approach with proper analytics across platforms provides more stability.

Verified Sources

All information verified from official Amazon sources and trusted industry analysts as of publication date.

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Deep Dive: Related Guides

For more comprehensive analysis on these topics:

→ Amazon Seller Central Guide 2026: Master Your Dashboard

Amazon Seller Central explained: every dashboard tab, all 18 reports decoded, and the data gaps Nova fills for FBA and FBM operators in 2026.

→ Advanced Amazon PPC Strategies: Smarter Spending for 2026

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